Способ производства низкоуглеродного цемента

Изобретение относится к промышленности строительных материалов и может быть использовано при производстве строительных растворов и бетонов, используемых при производстве стеновых блоков, штукатурных основ, облицовочных и декоративных изделий. Способ производства низкоуглеродного цемента включает кальцинирование глины при температуре от 570 до 700°С в течение 60 мин, ее охлаждение, измельчение до размера частиц менее 63 мкм и смешивание с ранее измельченным до размера частиц менее 63 мкм природным известняком с получением комплексной добавки, введение полученной комплексной добавки и суперпластификатора на основе водной композиции модифицированных поликарбоксилатных эфиров в измельченный портландцементный клинкер при следующем соотношении компонентов, мас.%: портландцементный клинкер 60, указанная кальцинированная глина 20-29,9, указанный природный известняк 10-19,9, суперпластификатор на основе водной композиции модифицированных поликарбоксилатных эфиров 0,1-1. Технический результат – усовершенствование ...

МЕХАНОАКТИВАТОР ЦЕМЕНТА И СПОСОБ ИЗМЕЛЬЧЕНИЯ И МЕХАНИЧЕСКОЙ АКТИВАЦИИ ЦЕМЕНТА С ЕГО ИСПОЛЬЗОВАНИЕМ

FIELD: chemistry. SUBSTANCE: invention relates to cement production. The cement mechanical activator has a housing 1, stand 2, counter-rotating discs 4 with the same speed, system for controlling grinding parameters 7 and two electric motors 3. The discs are completely or partially coated with dielectric material or are made from dielectric material and are fitted with washers 6 for regulating the gap between them. Each of the motors has a hollow shaft 5 for feeding cement and air into this gap. The discs have oval or circular shaped peripheral grooves lying synchronously 8 opposite each other and lying asynchronously 9 -displaced from each other. Discs rotate at 1500 rpm and have diametre of 1200 mm. Glass can be used as the dielectric material. The method of grinding and mechanically activating cement involves processing cement in the said mechanical activator with eddy current speed of 100000 to 3000000 rpm. Processing can be done with additional introduction of nanocomposite additives. EFFECT: provision for given fineness, sufficient mono-dispersiveness, prevention of cement clustering, reduced cement consumption, increased reliability and durability of the mechanical activator. 5 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 371 403 (13) C1 (51) МПК C04B B02C 7/36 7/10 (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2008113236/03, 28.03.2008 (24) Дата начала отсчета срока действия патента: 28.03.2008 (45) Опубликовано: 27.10.2009 Бюл. № 30 (73) Патентообладатель(и): ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "МОНОЛИТ" (RU) 2 3 7 1 4 0 3 2 3 7 1 4 0 3 R U (54) МЕХАНОАКТИВАТОР ЦЕМЕНТА И СПОСОБ ИЗМЕЛЬЧЕНИЯ И МЕХАНИЧЕСКОЙ АКТИВАЦИИ ЦЕМЕНТА С ЕГО ИСПОЛЬЗОВАНИЕМ (57) Реферат: Изобретение относится к изготовлению цемента. Механоактиватор цемента включает корпус 1, станину 2, встречно вращающиеся с одинаковой скоростью диски 4, систему управления параметрами помола ...

СПОСОБ ПОЛУЧЕНИЯ ЦВЕТНОГО ПОРТЛАНДТЦЕМЕНТА

Область использования: изобретение относится к производству строительных материалов, а именно к получению цветных литьевых портландцементов с пластифицирующей добавкой. Сущность изобретения: для получения цветного, литьевого портландцемента (ПЦЦЛ) проводят постадийный помол исходного портландцемента или портландцементного клинкера и гипса с пигментом, а затем с пластификатором С-3. При этом используют готовые портландцемент серый ДО М-400, или кремовый портландцемент ДО М-400, полученный из отбеленных рядовых портландцементных клинкеров, или белый портландцемент ДО М-400. Получение перечисленных портландцементов из портландцементных клинкеров серого, кремового и белого можно включить непосредственно в технологический процесс получения портландцементов цветных путем помола при ускорении частиц измельченных материалов 10-20 g, а затем помолоть их совместно с пластификатором С-3 при таком же ускорении. В качестве пигмента используют любые органические или неорганические пигменты или их смеси ...

СПОСОБ ПОЛУЧЕНИЯ ДИСПЕРСИОННО-КОНДИЦИОНИРОВАННЫХ ПОРОШКОВЫХ МАТЕРИАЛОВ

Способ включает электромагнитное кондиционирование образуемых предпродуктовых полифракционных смесей и их сепарирование. Кондиционирование ведут помолом смеси в условиях ее электронейтрализации. Для этого с массой кондиционируемой смеси производят электрообособление, обеспечиваемое инициированием хода помола деполярирующим электрическим потенциалом. Изобретение позволяет достичь повышенной четкости выделения в целевой продукт благоприятной метрической фракции. 1 з. п. ф-лы, 1 табл.

СПОСОБ ПРИГОТОВЛЕНИЯ ВЯЖУЩЕГО ВЕЩЕСТВА

Изобретение относится к промышленности строительных материалов и может быть использовано для получения вяжущих. Способ приготовления вяжущего вещества включает совместный помол портландцемента, суперпластификатора и минеральной добавки до получения удельной поверхности вяжущего вещества 5-7 м2/г, при этом в качестве минеральной добавки используют кварцевые пески со следами соединений циркония при следующем соотношении компонентов, мас.%: портландцемент 99,45-97,85, суперпластификатор 0,5-2, кварцевые пески со следами соединений циркония 0,05-0,15. Технический результат - получение вяжущего вещества, обладающего низкой водопотребностью и высокой прочностью на сжатие. 1 табл.

СПОСОБ И КОМПЛЕКС ОБОРУДОВАНИЯ ДЛЯ ПРОИЗВОДСТВА ЦЕМЕНТА

... 1. Способ производства цемента, в котором исходное цементное сырье, такое как известняк и глинозем, измельчают в измельчающем (1) устройстве для последующего нагрева и обжига в цементный клинкер, который впоследствии охлаждают и затем направляют в измельчающее (1) устройство для измельчения в цемент, отличающийся тем, что исходное цементное сырье и цементный клинкер попеременно измельчают в одном и том же измельчающем (1) устройстве.2. Способ по п.1, отличающийся тем, что измельчающее (1) устройство выполнено с возможностью переналадки между измельчением исходного цементного сырья и цементного клинкера в пределах одного часа, предпочтительно в пределах одной минуты.3. Способ по п.1 или 2, отличающийся тем, что измельчающее (1) устройство задействуют, когда происходит смена предназначенных для измельчения материалов.4. Способ по п.1 или 2, отличающийся тем, что измельчающее устройство (1) и основная дробилка (2) работают исключительно в один и тот же период времени.5. Способ по п.3, отличающийся ...

ВЫСОКОКАЧЕСТВЕННЫЙ ЦЕМЕНТ И СПОСОБ ЕГО ПРОИЗВОДСТВА

... 1. Способ производства высококачественного цемента (НРС) для применения в сфере строительства, состоящий из следующих этапов, на которых:- помещают все сырье, куда входят портландский клинкер, гипс и добавки для производства композитного цемента, такие как известняк, шлак, песок, трасс (пуццолан) и т.д., в бункеры загрузки (1) для производства высококачественного цемента, в зависимости от определенного качества и классов цемента,- автоматически дозируют требуемое количество сырья, используя конвейерные весы (2), расположенные под бункерами загрузки (1),- взвешивают сырье на конвейерных весах (2), сравнивая фактический расход и запрограммированный расход, путем отслеживания скорости конвейерных весов (2) и соответствующей повторной настройки скорости конвейерных весов (2),- обеспыливают сырье путем помещения фильтра (4) над конвейерными весами (2),- передают сырье на конвейер загрузки первой дробилки (3),- загружают сырье из конвейера (3) в первую шаровую дробилку (6) для грубого помола ...

ТЕХНОЛОГИЧЕСКАЯ УСТАНОВКА ДЛЯ ПРОИЗВОДСТВА КОМПОЗИТНЫХ ЦЕМЕНТИРУЮЩИХ МАТЕРИАЛОВ С УМЕНЬШЕННЫМ ВЫДЕЛЕНИЕМ ДВУОКИСИ УГЛЕРОДА

... 1. Технологическая установка для приготовления композитных цементирующих материалов, таких как гидравлические смешанные цементы, со значительно уменьшенным содержанием минералов портландцементного клинкера и, соответственно, с увеличенным количеством дополнительных цементирующих материалов, таких как, например, зола-унос, шлак доменных печей, измельченный кварц, мелочь гранитных карьеров и подобных материалов, и высоко реакционно-способных пуццолан или минеральных наполнителей, таких как, например, зола-унос, шлак доменных печей, измельченный кварц, гранитная каменная мелочь и тому подобное для прямой замены части портландцемента в бетоне, включающая бункер для портландцемента, бункер для золы-уноса или другого типа дополнительных материалов и бункер для пыли цементообжигательной печи или другого типа агента, регулирующего время схватывания, установку для хранения полимерной добавки, пропорционирующие устройства, перемешивающие устройства, измельчающие устройства и устройства выгрузки, ...

Интенсификатор помола

Изобретение относится к промышлен ности строительных материалов, преимущественно к интенсификаторам помола при производстве шлаковых ц монгоь. Целью изобретения является повышение производительности и прочности. Отход проиэвод- с-ва синтетических моющих средств в количестве 0,02-0,06% от массы вяжущего гводился в мельницу с помощью насоса и распылительной форсунки на слой исходного для размола материала Отход производства синтетических моющих средств испопьчуется в качестве чнтенсификатора по- NO/,3 и содержит следующие чомпоненты, мое %. тримолифосфйт натрия 30-32, сульфат н-чтрия З1 -34, сульфзнол 17-23; гиликат натрия , 11-13. Производительность 124-131%. прочность 9,5-10.6 МПа. 2 табл.

PROCESS FOR REDUCING THE ALKALI CONTENT OF CEMENT CLINKER

... 1368092 Cement NORCEM AVD DALEN AS 26 Aug 1971 [26 Aug 1970] 36942/71 Heading C1H The alkali content of cement clinker is reduced by washing with water during or after milling to cement and optionally with the addition of gypsum. A coarse fraction can be separated off and then further milled. S- containing compounds can be added to the raw charge so that the alkalies are transformed into soluble sulphates during burning. Further washing with a liquid which does not react with cement and which can be evaporated and recovered can be made. Retarders can be added to the wash water.

Improvements in and relating to electromagnetic wave propagating structures

... 655,410. Travelling-wave tubes; magnetrons. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 6, 1947. No. 26794. [Class 39 (i)] [Also in Group XL (b)] An electromagnetic wave propagating structure for propagating electromagnetic waves with a phase velocity substantially less than the free-space velocity comprises a waveguide or coaxial or strip transmission line to which is coupled a plurality of cavity resonators the spacing and/or the natural frequency of which varies in accordance with a repetitive law such that the resonators and the spaces between them may be divided into a plurality of like groups, a group constituting the smallest repeated pattern of the resonators and spaces and comprising at least three resonators and three spaces the resonators of the group being of more than one natural frequency and/or the spaces being of more than one magnitude whereby the structure has a low dispersion over a substantial frequency band. In one form, Fig. 9, the resonators are grouped in threes ...

MOULDING COMPOSITIONS COMPRISING CEMENT CLINKER PARTICLES AND A RESIN BINDER

LOWER HEAT PROCESSED CALCIUM SULPHATES FOR EARLY STRENGTH CEMENTS AND GENERAL USE

LOWER HEAT PROCESSED CALCIUM SULPHATES FOR EARLY STRENGTH CEMENTS AND GENERAL USE

LOWER HEAT PROCESSED CALCIUM SULPHATES FOR EARLY STRENGTH CEMENTS AND GENERAL USE

PROCEDURE AND DEVICE FOR THE GRINDING OF HOT AND DAMP RAW MATERIAL

PROCEDURE FOR THE FINE AND PURIFYING CUTTING OF BRITTLE MATERIALS

VERFAHREN ZUM ZERKLEINERN VON KLINKER SOWIE VORRICHTUNG ZUR DURCHFÜHRUNG DIESES VERFAHRENS

VERFAHREN UND VORRICHTUNG ZUM ZERKLEINERN VON HEISSKLINKER

VERFAHREN ZUM ZERKLEINERN VON KLINKER SOWIE VORRICHTUNG ZUR DURCHFÜHRUNG DIESES VERFAHRENS

VERFAHREN ZUM MAHLEN VON KLINKER

Process for grinding clinker from an oven (2) comprises feeding the clinker via a clinker cooler (1) to a jet pulverizer, and recycling the cooling air from the cooler to the oven. The cooled clinker is fed to the jet pulverizer at above 250o C and the vapor withdrawn from the jet pulverizer is fed via a heat exchanger (15) to heat feed water for the pulverizer and condensed. The heated feed water is vaporized with the combustion waste gases from the clinker oven and injected into jet pulverizer.

PROCEDURE FOR THE TREATMENT OF CEMENT CLINKER

PROCEDURE FOR THE IMPROVEMENT OF GRINDING OF CEMENT CLINKER IN ROLLER MILLS

METHOD AND A PLANT FOR PRODUCING A DRY CEMENT COMPOSITION

PROCESSING SYSTEM FOR MANUFACTURING OF COMPOSITE CEMENTITIOUS MATERIALS WITH REDUCED CARBON DIOXIDE EMISSIONS

COMPOSITE CEMENT AND METHOD OF MANUFACTURING COMPOSITE CEMENT

The present invention relates to a composite cement obtainable by grinding Portland cement clinker and latent hydraulic material together, preferably in the presence of at least one amine grinding aid, to provide a ground mixture and combining the ground mixture with a mineral filler. It further relates to a method of manufacturing the composite cement comprising the steps of grinding a latent hydraulic material and a portland cement clinker together, preferably in the presence of at least one amine, to provide a ground mixture and combining the ground mixture with one or more mineral fillers as well as to binders and to using the cement or binders as building material.

GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS

A method for grinding a solid in a vertical roller mill (VRM), comprising grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula (I): The definitions fo variables R1, R2, and R3 are provided herein.

METHOD OF BRAKE FLUID DISPOSAL AND GRINDING AID FOR CEMENT MATERIAL

A method of brake fluid disposal, characterized by recovering a glycol br ake fluid from vehicles and adding the recovered glycol brake fluid in a gri nding operation in cement material production facilities. Further, the metho d of brake fluid disposal is one characterized in that the recovered glycol brake fluid is mixed with diethylene glycol. By this method, through reducti on of cumbersome work, effective utilization of resources can be attained in cement material production facilities.

LOWER HEAT PROCESSED CALCIUM SULPHATES FOR EARLY STRENGTH CEMENTS AND GENERAL USE

The Invention is related to increasing of early strength and final strengths of cements classified under EN and ASTM as Portland or CEM cements and also related to all clinker employing cements and to any kinds which employ calcium sulphates for set optimization and is for composing of new cements by only assesing new methods for production and is for composing of new cements by only assessing new methods to formation and inclusion of calcium sulphate resources which are used for set optimization.A new calcium sulphate resource is obtained by employing lower heats and this input is arranged to different dehydration levels at which they can be most efficient for the selected use. These different dehydration levels are called intermediate phases of dehydrate or hemihydrates or called as monohydrate.. The Invention clarifies a well defined reactivity power concept which was not defined by the existing scientific basis. As a result, cements which have much higher early strengths than the known ...

DILUTION-STABLE CEMENT GRINDING ADDITIVE COMPOSITION

The present invention provides cement grinding additive compositions and methods which allow a powerful, robust defoamer to be uniformly dispersed throughout a broad concentration range while retaining storage stability even in cases wherein the defoamer is highly diluted. Exemplary cement grinding additive compositions comprise at least one amine cement grinding additive; a tri-iso-butylphosphate defoamer; a biopolymer polysaccharide gum selected from the group comprising Diutan, Whelan, Xanthan, or mixtures thereof; and water in the amount of 0.10 to 95.0 percent based on total weight of composition. Methods for manufacturing cement using the cement grinding additive compositions are also described.

METHOD OF MAKING BLENDED CEMENT COMPOSITONS

A method of preparing a blended cement composition is provided. The method comprises intergrinding a composition comprised of a major amount by weight of portland cement clinker, a minor amount by weight of a pozzolanic material and a grinding aid in an amount of from about 0.1 % to about 5 % based on the total weight of portland cement clinker and pozzolanic material, said grinding aid being comprised of a naphthalenesulfonate formaldehyde condensate.

Verfahren zur Herstellung eines hydraulischen Bindemittels.

Elektromagnetischer Wellenleiter.

Procédé de commande d'un broyage à sec

PROCEDURE FOR THE FINE AND PURIFYING CUTTING OF MATERIALS OF BRITTLE MATERIAL BEHAVIOR.

METHOD AND DEVICE FOR PRODUCING CEMENT

СПОСОБ И УСТРОЙСТВО ДЛЯ РАЗМОЛА ГОРЯЧЕГО И ВЛАЖНОГО ИСХОДНОГО МАТЕРИАЛА

Изобретение относится к способу и устройству для размола горячего и влажного исходного материала. Изобретение предназначено для применения, в частности, в цементной промышленности для размола и одновременной сушки цементного клинкера, шлака и добавок. Для повышения производительности, экономии энергии и улучшения качества продукта, в частности в случае смешанных цементов, предусмотрены одновременные размол и сушка за счет регулируемой подачи охлаждающего газа в верхнюю часть мельницы при относительно высокой входной температуре горячего газа в нижней части мельницы. Подача охлаждающего газа обеспечивает заданную температуру газа и продукта после воздушного сепаратора и заменяет или значительно уменьшает невыгодный впрыск охлаждающей воды.

TREATED AT LOW TEMPERATURES SULFATES CALCIUM FOR RAPIDLY HARDENING CEMENTS AND TOTAL APPLICATION

СПОСОБ И УСТРОЙСТВО ДЛЯ РАЗМОЛА ГОРЯЧЕГО И ВЛАЖНОГО ИСХОДНОГО МАТЕРИАЛА

Изобретение относится к способу и устройству для размола горячего и влажного исходного материала. Изобретение предназначено для применения, в частности, в цементной промышленности для размола и одновременной сушки цементного клинкера, шлака и добавок. Для повышения производительности, экономии энергии и улучшения качества продукта, в частности в случае смешанных цементов, предусмотрены одновременные размол и сушка за счет регулируемой подачи охлаждающего газа в верхнюю часть мельницы при относительно высокой входной температуре горячего газа в нижней части мельницы. Подача охлаждающего газа обеспечивает заданную температуру газа и продукта после воздушного сепаратора и заменяет или значительно уменьшает невыгодный впрыск охлаждающей воды.

СПОСОБ И УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ ЦЕМЕНТА

Предметом изобретения является способ получения цемента (9). При этом цементный клинкер (1) и сульфатсодержащий материал (11), а также при необходимости другие составляющие (2, 12) размалываются вместе в валковой мельнице (5) до состояния муки. Сульфатсодержащий материал (11) нагревают, обезвоживают и обжигают до желаемой степени в отдельной установке (10), сразу после этого транспортируют на валковую мельницу (5) и размалывают там вместе с остальными компонентами.

MINERALIZUYuShchAYa ADDITIVE FOR TERNESIT - CEMENTS BASED ON SULFOALYuMINATA CALCIUM

Efficient calcium thioaluminate type bulking agent and its preparing process

An efficient calcium thioaluminate type bulking agent, an improvement on CAS-type one, features that the lime stone, gypsum and bauxite are first calcined in rotary kiln to prepare clinker, which is them mixed with gypsum and ground while lime stone is added to generate CAS-type bulking agent. Its advantages are high performance and low content of alkali.

Similar waveguide and devices

METHOD FOR PRODUCING A FAST HYDRAULIC BINDER

Method for manufacturing cement using food garbage and the said cement

Low carbon low burning cement clinker and preparing method thereof

MANUFACTURING METHOD OF CEMENT-BASED SOLIDIFYING AGENT FOR SOIL

To obtain a cement-based solidifying agent for soil, crushing to ultra-fine powder(5500cm Gr) by putting cement into ballmill, and adding 0.5% carbide based on the amount of cement to generate acethylene(C2H2) increasing the activity of pozzolone of the crushed cement surface. The obtained product from this method is mixed with soil and sludge instead of sand, and then can give mortar or concrete with excellent intensity. Copyright 1999 KIPO ...

HIGHLY FUNCTIONAL GROUND MINERAL PREPARATION AND PRODUCTION METHOD THEREOF

Disclosed are a ground mineral preparation containing a synthesized polymer or a mixture thereof, and a production method thereof. In order to pulverize cement clinker and mineral, a specific amount of the disclosed ground mineral preparation containing the synthesized polymer or the mixture thereof is added so as to increase pulverization efficiency. Additionally, the ground mineral preparation contains the synthesized polymer one of structures having specific chemical formula or the mixture thereof. COPYRIGHT KIPO 2017 ...

ADDITIVES FOR MINERAL BINDING AGENTS

Processo de preparação de uma composição de concreto úmida, composição de concreto úmida e objeto de concreto endurecido.

HIGH PERFORMANCE CEMENT AND PRODUCTION PROCESS

This invention is related to the production of High Performance Cement (HPC) where the clinker (being the raw material for ordinary Portland cement (OPC) which is the major material in the construction industry), is ground through a special grinding technology (regarding conformity to the designated principles during grinding, like; regime temperature, humidity, grinding duration) by adding a modifier (complex chemical composition) for improving mechanical-chemical properties of the cement particles, resulting production of high performance cements such as HPC 62.5 with better properties than the known cements in the standards. The invention is also related to the use of same technology to improve the performance and quality of the composite cement types with reduced clinker content for replacement of other additions such as; slag, limestone, sand, fly ash, trass (pozzolan) etc. The invention also defines the production process and production units of the high performance cement.

THE PROCESS OF VIBRATION OF PULVERIZED COMPONENTS DURING GRINDING AND AFTER GRINDING BY THE VIBRATIONS OF CHANGEABLE AND ADJUSTABLE FREQUENCY

Procedure of vibroactivation of fine grinded materials with the effects of tribomechanical charge of particles, dispersion with the effects of splitting grouped and snowflaked particles induced/caused by physical Van-der-Waals forces of attraction. Procedure will provide cost-effective and higher quality final results of the product/of the final product. Procedure of vibroactivation with the effects of tribomechanical charging of particles includes highfrequency vibrators with variable and adjustable frequency.

Liquid additive for intergrinding cement

Exemplary compositions and methods for reducing hexavalent chromium in cementitious compositions involve the use of a liquid additive composition, comprising stannous chloride. Along with the stannous chloride may be used at least one co-additive comprising an antioxidant, oxygen scavenger, or mixture thereof, and/or at least one agent comprising a cement grinding aid, cement quality improver, or mixture thereof.

Method and device for removing mercury during the production of cement clinker

A method and a device remove mercury from exhaust gases during a production of cement clinker. The device contains a pre-heating stage, a feed point for raw materials required for the production of the cement clinker, a rotary kiln for burning the raw materials, a filter stage for removing dust from the exhaust gases conducted in the main flow, and a raw mix mill for partially mill drying the raw materials. A circuit for the mercury in the exhaust gases is formed between the pre-heating stage and the raw mix mill or the filter stage. To achieve good mercury removal at low cost, a sub-flow of 1 to 30 volume percent of the exhaust gases is branched off from the main flow of the exhaust gases having a temperature of at least 300° C. A separator and thereafter at least one stage for removing mercury are arranged in the sub-flow.

METHOD OF MAKING BLENDED CEMENT COMPOSITONS

A method of preparing a blended cement composition is provided. The method comprises intergrinding a composition comprised of a major amount by weight of portland cement clinker, a minor amount by weight of a pozzolanic material and a grinding aid in an amount of from about 0.1 % to about 5 % based on the total weight of portland cement clinker and pozzolanic material, said grinding aid being comprised of a naphthalenesulfonate formaldehyde condensate.

ДОБАВКА РАЗМОЛА ДЛЯ МИНЕРАЛЬНЫХ ВЯЖУЩИХ

Изобретение относится к способу размола неорганического твердого вещества из группы цементного клинкера, пуццолана и/или сырья для изготовления цемента, где добавку размола добавляют до или во время размола, и при этом добавка размола, из расчета массы в сухом состоянии, содержит 6%-80% от массы капролактама и 1,5%-30% от массы аминокапроновой кислоты, где в каждом случае, из расчета массы в сухом состоянии, применяют 0,002%-2% от массы добавки размола, исходя из общего количества твердого вещества. Кроме того, заявлена добавка размола и ее применение для повышения прочности на сжатие отвержденного продукта, изготовленного посредством способа. 4 н. и 9 з.п. ф-лы, 2 табл.

ГЛИЦЕРИНОСОДЕРЖАЩИЕ ПОБОЧНЫЕ ПРОДУКТЫ И СПОСОБЫ ИХ ПРИМЕНЕНИЯ

Изобретение относится к технологиям, интенсифицирующим процесс размола. Способ включает размол твердых веществ в присутствии композиции интенсификатора размола. Композиця интенсификатора размола включает стальные шары и один побочный продукт, полученный из процесса производства биодизеля и состоящий из глицерина, органических веществ, не содержащих глицерина (ОВНГ), сложных метиловых эфиров, метанола, неорганических солей и воды, или побочный продукт реакций переэтерификации с участием триглицеридов, состоящий из глицерина, органических веществ, не содержащих глицерина (ОВНГ), сложных метиловых эфиров, метанола, неорганических солей, воды или их смеси. Изобретение позволяет уменьшить агломерацию размалываемых частиц в процессе размола, повысить эффективность мельниц и снизить затраты энергии для размола таких частиц. 2 н. и 14 з.п. ф-лы.

СПОСОБ ПОЛУЧЕНИЯ ВЯЖУЩЕГО НА ОСНОВЕ ПРОМЫШЛЕННЫХ ОТХОДОВ

Изобретение относится к способу получения вяжущего на основе промышленных отходов, которое может быть использовано в цементной и строительной промышленности. Технический результат - снижение энергоемкости, сокращение времени помола вяжущего и повышение качества конечного продукта. Способ получения вяжущего на основе промышленных отходов включает помол портландцементного клинкера и промышленных отходов. В качестве промышленных отходов используют отход ванадиевого производства, содержащий, мас.%: SiO2 3,22; Al2O3 0,41; CaO 36,93; MgO 5,03; V2O5 2,81; Mn2O3 17,39; SO3 33,02; потери при прокаливании 1,19, и отход обогащения железистых кварцитов Курской магнитной аномалии, содержащий, мас.%: Fe2О3 4,06; FeO 9,45; SiO2 72,74; Al2O3 2,52; CaO 3,12; MgO 5,84; S 0,21; P 0,16; K2O 0,65; Na2O 0,98; TiO2 0,27. Указанные отход ванадиевого производства и отход обогащения железистых кварцитов Курской магнитной аномалии смешивают в соотношении массовых частей 1:1 в течение 0,20 ч, добавляют 88-90 мас.% ...

СПОСОБ ПОЛУЧЕНИЯ ВЫСОКОМАРОЧНОГО ЦЕМЕНТА

Изобретение относится к области производства строительных материалов и может быть использовано для получения высокомарочных цементов. Способ получения цемента заключается в совместном измельчении компонентов цемента в мельнице, заполненной рабочими элементами. При этом используют электромагнитную мельницу с рабочими элементами в виде постоянных магнитов при отношении общей массы цемента к массе рабочих элементов от 1:3 до 1:15, при этом создают в мельнице магнитное поле напряженностью от 30 до 70 кА/м и частотой от 35 до 100 Гц и измельчение осуществляют в течение 5-45 мин. Предпочтительно использовать постоянные магниты с эффективным диаметром от 10 до 50 мм и с индукцией 0,1-1,0 Тл. Изобретение позволяет повысить дисперсность получаемого цемента, что позволяет улучшить прочностные характеристики получаемых из цемента строительных материалов при одновременном обеспечении высокой морозостойкости и водонепроницаемости. 1 з.п. ф-лы, 8 табл., 5 пр.

Способ получения вяжущего для бетонов и строительных растворов

Изобретение относится к производству безобжиговых вяжущих и может быть использовано при изготовлении строительных изделий гидравлического твердения. Техническим результатом изобретения является снижение расхода портландцементного клинкера и повышение прочности вяжущего. Для этого получают активированный продукт путем смешивания и совместного помола активной минеральной добавки в виде золы уноса, горелой породы или их смеси с твердыми щелочесодержащими отходами на основе едкого натра и хлористого натрия в количестве 5-10 вес. % и последующим смешиванием и совместным помолом полученного активированного продукта с портландцементным клинкером и гипсосодержащим компонентом - отходами гипсокартона. В качестве твердых щелочесодержащих отходов использованы отходы отработанного раствора электролизера производства едкого натра, а в качестве гипсосодержащего компонента - обрезки гипсокартона. Активированный продукт имеет удельную поверхность частиц 250-300 м/кг, а полученное вяжущее имеет удельную ...

СВЕРХВЫСОКОПРОЧНЫЙ БЕТОН С НИЗКИМ СОДЕРЖАНИЕМ ЦЕМЕНТА

Настоящее изобретение относится к гидравлическому вяжущему, содержащему, в массовых процентах: от 17 до 55% портландцемента, частицы которого имеют D50 от 2 до 11 мкм; по меньшей мере 5% микрокремнезема; от 36 до 70% минеральной добавки А1, частицы которой имеют D50 от 15 до 150 мкм; где сумма этих процентов составляет от 80 до 100%; сумма процентного содержания цемента и микрокремнезема составляет более 28%; минеральная добавка А1 выбрана из шлаков, пуццолановых добавок или кремнистых добавок, таких как кварц, минеральных добавок кремнистого известняка, добавок известняка, таких как карбонат кальция, или их смесей. Изобретение также относится к смеси, содержащей указанное гидравлическое вяжущее и песок, к гидравлической композиции, содержащей указанную смесь и воду. Кроме того, изобретение относится к фасонному изделию для строительной отрасли, содержащей указанное гидравлическое вяжущее или указанную смесь гидравлического вяжущего и песка. Изобретение развито в зависимых пунктах формулы ...

ГЛИЦЕРИНОСОДЕРЖАЩИЕ ПОБОЧНЫЕ ПРОДУКТЫ И СПОСОБЫ ИХ ПРИМЕНЕНИЯ

... 1. Способ размола твердых веществ, включающий размол твердых веществ в присутствии композиции интенсификатора размола, где композицией интенсификатора размола является глицериносодержащий побочный продукт процесса производства биодизеля или реакций переэтерификации с участием триглицеридов, или их смесь. ! 2. Способ по п.1, где побочный продукт включает приблизительно от 50 до 95 мас.% глицерина. ! 3. Способ по п.2, где побочный продукт получен из процесса производства биодизеля. ! 4. Способ по п.2, где побочный продукт получен из реакций переэтерификации с участием триглицеридов. ! 5. Способ по п.3, где побочный продукт дополнительно включает один или более компонент, выбранный из группы, состоящей из органических веществ, не содержащих глицерина (ОВНГ), сложных метиловых эфиров, метанола, неорганических солей и воды. ! 6. Способ по п.5, где побочный продукт включает приблизительно от 0,01 до 7 мас.% одной или более неорганической соли. ! 7. Способ по п.1, где побочный продукт растворен ...

СПОСОБ ПОМОЛА, АГРЕГАТ ДЛЯ ПОМОЛА И ПРОИЗВОДСТВО ГИДРАВЛИЧЕСКОГО ВЯЖУЩЕГО

... 1. Способ компрессионного помола по меньшей мере одного компонента гидравлического вяжущего, включающий в себя сжатие слоя материала, образованного этим компонентом или этими компонентами в зоне помола, причем упомянутый способ дополнительно включает в себя добавление масла в слой материала выше по течению от входа в зону помола.2. Способ по п. 1, включающий в себя добавление минерального масла в слой материала.3. Способ по п. 1 или. 2, в котором количество масла, добавляемого в слой материала, составляет от 0,1 до 1,5%, предпочтительно от 0,5 до 1 масс.% относительно массы компонентов, подлежащих помолу.4. Способ по п. 1, в котором масло распыляют на слое материала.5. Способ по п. 1, в котором масло добавляют в нескольких зонах, которые расположены вдоль одной или нескольких поперечных осей относительно направления движения слоя материала вперед.6. Способ производства гидравлического вяжущего, включающий в себя способ компрессионного помола по любому из пп. 1-5.7. Гидравлическое вяжущее ...

Способ измельчения фосфорсодержащих материалов

Изобретение относится к измельчению твердых материалов и может быть использовано в производстве рудных материалов и минеральных удобрений. Цель изобретения - повышение размо- лоспособности и снижение расхода ин- тенсификатора. Способ измельчения фосфорсодержащих материалов предусматривает введение при помоле солей аммония из группы хлористый аммоний, азотно-кислый аммоний и серно-кислый аммоний в количестве 0,03-0,05% от массы размалываемого материала. 1 табл.

Интенсификатор помола цемента

Изобретение относится к технологии производства строительных материалов, к технологии измельчения цемента. Сущность изобретения; интенсификатор помола цемента дополнительно содержит полифе- нилсилоксановую смолу при следующем соотношении компонентов, мас.%: натриевая соль продукта конденсации нафталинсуль- фокислоты с формальдегидом 80 - 83,3; пол- ифенилсилоксановая смола 16,7 - 20. Направлено на интенсификацию измельчения и повышение активности цемента.

VERFAHREN ZUR HERSTELLUNG EINES FREIFLIESSENDEN SICH AUSDEHNENDEN ZEMENTBREIS

Verbesserte Misch- und Portlandzement-Zusammensetzungen.

A Method of Cooling Hot Cement Clinkers by Liquids or Gases.

... 2347. Jochum, P. Jan. 30. Roller mills.-Hot cement clinkers from a kiln are crushed between water-cooled rollers and are simultaneously cooled by spraying with water. The rollers of the crushing-mill may be hollow for the circulation of a cooling-medium, or they may be sprayed with water internally. The material may be further cooled in a conveyer which carries the cement to a store.

Improvements in or relating to the manufacture of building materials

A method of treating cement, so that when compounded, e.g. into blocks, protection is afforded against nuclear radiation, comprises adding, during or after grinding a material to counteract moisture during storage and a proportion of barytes. Preferably 0,01% to 2% by weight, of moisture-resistant material and 60% to 95% of barytes are incorporated and up to 3% by weight of gypsum may also be included. A plaster contains 7 parts by weight of barytes and 1 part by weight of a mixture of cement, moisture-resistant additive and gypsum.

HÜTTENSANDHALTIGES CEMENT

Procedure for the regulation of a dry meal process

VERFAHREN UND VORRICHTUNG ZUR QUECKSILBERABSCHEIDUNG BEI DER ZEMENTKLINKERHERSTELLUNG

The invention relates to a method and to a device for removing mercury from the exhaust gases (1) during the production of cement clinker, comprising a pre-heating stage (2), a feed point for the raw materials (10) required for the production of cement clinker, a rotary kiln (3) for burning the raw materials, at least one filter stage (8) for removing dust from the exhaust gases (1) conducted in the main flow, and at least one raw mix mill (6) for at least partially mill drying the raw materials (10), wherein a circuit for the mercury in the exhaust gases (1) is formed between the pre-heating stage (2) and the raw mix mill (6) or the at least one filter stage (8). In order to achieve good mercury removal at low cost, a sub-flow (13) of 1 to 30 volume percent of the exhaust gases (1) is branched off in a region of the main flow of the exhaust gases (1) having a temperature of at least 300°C, wherein at least one separator (14) and thereafter at least one stage (17) for removing mercury are ...

VERFAHREN ZUR FEIN- UND FEINSTZERKLEINERUNG SPROEDER MATERIALIEN

PROCEDURE FOR THE PRODUCTION OF A HYDRAULIC BONDING AGENT

Micro-granulose particulates

Process to prepare cement mixes

Method for using alkanolamine in a grinder

The present invention relates to a method for using a secondary or tertiary alkanolamine for grinding cement, comprising: - forming an inorganic acid salt of the alkanolamine; - adding the salified alkanolamine to a grinder.

A method of treating cement clinker

Lower heat processed calcium sulphates for early strength cements and general use

The Invention is related to increasing of early strength and final strengths of cements classified under EN and ASTM as Portland or CEM cements and also related to all clinker employing cements and to any kinds which employ calcium sulphates for set optimization and is for composing of new cements by only assesing new methods for production and is for composing of new cements by only assessing new methods to formation and inclusion of calcium sulphate resources which are used for set optimization.A new calcium sulphate resource is obtained by employing lower heats and this input is arranged to different dehydration levels at which they can be most efficient for the selected use. These different dehydration levels are called intermediate phases of dehydrate or hemihydrates or called as monohydrate.. The Invention clarifies a well defined reactivity power concept which was not defined by the existing scientific basis. As a result, cements which have much higher early strengths than the known ...

METHOD OF FINE AND VERY FINE COMMINUTION OF MATERIALS HAVING BRITTLE BEHAVIOR

The disclosure describes a method of producing finely and very finely comminuted brittle materials, wherein the particles to be ground are stressed in the form of a bed of bulk material between two practically non-yielding hard surfaces. In a first step a bed of particles to be ground is stressed once by an energy sufficiently high not only to cause comminution but also a distinct agglomeration or briquetting of the fragments by subjecting the bed to compression of at least 500 kg/cm2 (7000 psi). The resulting agglomerates or briquettes are subsequently disintegrated in another step by mechanical stressing.

GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS

Method for grinding a solid in a vertical roller mill (VRM) and a cement composition prepared by the disclosed methods. A method comprises grinding a solid comprising a cement clinker under a water spray in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises: (i) an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula: (I), (ii) a glycol; or a mixture of (i) and (ii), wherein the water spray level is reduced by at least 5% compared to a control. Cement compositions prepared by the disclosed methods have the pre-hydration level (Wk) equal to or less than 1.5%. The values and preferred values of R1-3 are disclosed herein.

GRINDING ADDITIVE FOR MINERAL BINDERS

The invention relates to a method for grinding an inorganic solid from the series cement clinker, pozzolan and/or raw material for cement production, where a grinding additive is added before or during grinding, and the grinding additive, based on the dry mass, comprises 6% to 80% by weight of caprolactam and 1.5% to 30% by weight of aminocaproic acid, where, based in each case on the dry mass, 0.002% to 2% by weight of the grinding additive is used, based on the total solid. Further claimed are a grinding additive and the use thereof for increasing the compressive strength of the cured product produced therewith.

PROCESS FOR THE PRODUCTION OF A RAPID HYDRAULIC BINDER

The present invention relates to a process for the production of a hydraulic binder, said process comprising co-grinding a clinker and 0.1 to 5% by dry mass relative to the mass of clinker, of a material comprising more than 15% by mass of calcium silicate hydrate relative to the solid fraction of the material.

A METHOD OF TREATING CEMENT CLINKER

A method of treating cement clinker by grinding the clinker in a tubular mill while charging water, gypsum and possibly also a water-reduction agent to the mill at the same time. According to the invention, the water has a pH of about 9-13 and is injected into the mill during grinding of the clinkers. According to one preferred embodiment, part of the microfill agent and/or the waterreduction agent is mixed with said water of high pH-value to form a slurry, which is injected during the grinding process together with microfill agent and/or water-reduction agent in a dry state.

LOWER HEAT PROCESSED CALCIUM SULPHATES FOR EARLY STRENGTH CEMENTS AND GENERAL USE

ТЕХНОЛОГІЧНА СИСТЕМА ДЛЯ ВИРОБНИЦТВА КОМПОЗИТНИХ В'ЯЖУЧИХ МАТЕРІАЛІВ ІЗ ЗМЕНШЕНИМИ ВИКИДАМИ ДІОКСИДУ ВУГЛЕЦЮ

Технологічна система для виробництва композитних в'яжучих матеріалів, наприклад гідравлічних цементів з мінеральними домішками, із значно зменшеним вмістом портландцементних клінкерних мінералів і, відповідно, з більшою кількістю додаткових в'яжучих матеріалів, таких, як, наприклад, пил золи, шлак доменних печей, дрібнозернистий кварцовий порошок, дрібняк з гранітних кар'єрів тощо, та високореакційних пуцоланів або мінеральних наповнювачів, таких, як, наприклад, пил золи, шлак доменних печей, дрібнозернистий кварцовий порошок, дрібняк з гранітних кар'єрів тощо, для прямої заміни портландцементу у бетоні, включає бункер для портландцементу, бункер для пилу золи або іншого виду додаткових матеріалів і бункер для пилу печі для випалу цементу або іншого виду засобу регулювання часу тужавлення, блок зберігання для полімерної домішки, дозуючі засоби, змішувальні засоби, пристрої помелу та вивантажувальні засоби. Ця система обладнана млиновим блоком 6, призначеним для попереднього помелу зазначених ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗМЕЛЬЧЕНИЯ ГОРЯЧЕГО ВЛАЖНОГО СЫРЬЕВОГО МАТЕРИАЛА

Изобретение касается способа и устройства для измельчения горячего влажного материала. Изобретение, в частности, удобное для цементной промышленности и измельчения и одновременной сушки цементного клинкера, шлака и агломератов. Для повышения производительности и экономии энергии, а также улучшения качества продукта, в частности, в смешанных видах цемента, производится одновременное измельчение и сушка с помощью контролируемой подачи охлаждающего газа в верхнюю часть дробилки с относительно высокой входной температурой горячего газа в нижней части дробилки. Подача охлаждающего газа обеспечивает заранее определенную температуру смеси газ-продукт внизу сепаратора и заменяет или значительно уменьшает невыгодный ввод охлаждающей воды.

Method and device for producing cement

CONCRETE HAS LOW CONTENT OF CLINKER

New process to obtain concretes hardened with the autoclave

MANUFACTORING PROCESS Of a FAST HYDRAULIC BINDER

La présente invention se rapporte à un procédé de fabrication d'un liant hydraulique comprenant le cobroyage d'un mélange comprenant du clinker et de 0,1 à 5 % en masse, exprimée en extrait sec, par rapport à la masse de clinker, d'un matériau comprenant plus de 15 % en masse de silicates de calcium hydratés par rapport à la fraction solide du matériau.

Low pressure injection grout

L'invention concerne un coulis en particulier pour l'injection sous faible pression, un produit pour la préparation d'un tel coulis et leur procédé de fabrication. Une quantité de cendres volantes dont le diamètre maximum des particules est égal à 20 mum et/ou de quartz broyé dont le diamètre maximal des particules est égal à 20 mum est substituée au volume initialement prévu de ciment fin dans le coulis selon un taux compris entre 1 et 90%.

GRINDING AID COMPOSITION COMPRISING ALKYL PHOSPHATE COMPOUND FOR CEMENT CLINKER

The present invention relates to a grinding aid composition used in a process of grinding a cement clinker. According to the present invention, a grinding aid is a phosphorous-based compound. More particularly, an alkyl phosphate compound is used as a grinding aid. Particularly, a tributyl phosphate compound can be used as a grinding aid. According to the present invention, an alkyl phosphate compound only or a mixture of the alkyl phosphate compound can be used for the grinding aid composition. Also, an aqueous glycols and an ethylene amine-based compound can be added. The grinding aid of the present invention increases long term compression strength of cement, and reduces energy consumption while improving particle fineness by preventing coagulation of particles during a clinker grinding process. COPYRIGHT KIPO 2017 (AA) Input a grinding aid (BB) Improve compressive strength (CC) Hydrate cement ...

CONCRETE WITH LOW CLINKER CONTENT

The invention relates to a dry binder pre-mix containing by weight percent: Portland clinker in the form of grains having a Dv97 varying between 10 and 30 μm or having a Blaine specific surface area greater than or equal to 5300 cm/g, preferably greater than or equal to 5500 cm/g, the minimum quantity of said clinker by weight percent being determined using formula for a clinker having a Dv97 varying between 10 and 30 μm or using formula for a clinker having a Blaine specific surface area greater than or equal to 5300 cm/g, i.e. [26 x ln(Dv97)]-43 , wherein Dv97 is the Dv97 of the clinker expressed in μm, and [-6.10 X SSB] + 75, wherein SSB is the Blaine specific surface area of the clinker expressed in cm/g;-slag, the minimum quantity of said slag by weight percent being determined using formula in the case of a mix with a clinker having a Dv97 varying between 10 and 30 μm or using formula in the case of a mix with a clinker having a Blaine specific surface area greater than or equal to ...

수경성 바인더의 프로세스, 그라인딩 유닛, 및 생산

... 본 발명은 수경성 바인더의 적어도 하나의 성분의 압축 그라인딩 프로세스에 관한 것이고, 상기 프로세스는 그라인딩 구역 (30) 에서 이러한 성분(들)에 의해 형성된 재료의 층 (M) 의 압축을 포함하고, 상기 프로세스는 그라인딩 구역으로의 입구 (32) 의 상류에 위치된 분배 수단 (66) 을 통해 재료의 층으로의 오일의 첨가를 추가로 포함한다.

Concrete with Low Clinker Content

ROBUST POLYCARBOXYLATE CONTAINING ETHER LINKAGES FOR MILLING PREPARATION OF CEMENTITIOUS MATERIALS

The present invention discloses compositions and methods wherein polycarboxylate comb polymers are used as grinding additives. The comb polymers contain a carbon-containing backbone and pendant groups wherein oxyalkylene pendant groups contain one or more ether linkage groups for providing robustness to the polymer for resisting degradation during grinding and hence sustaining workability and strength of hydratable cementitious materials, such as cements, pozzolans, limestone, and other cementitious materials.

PROCESS, GRINDING UNIT AND PRODUCTION OF A HYDRAULIC BINDER

The present invention relates to a compression grinding process of at least one component of a hydraulic binder, said process comprising the compression of a bed of material (M) formed by this or these component(s) in a grinding zone (30), said process further comprising the addition of oil to the bed of material, via distribution means (66) located upstream of the inlet (32) to the grinding zone.

COMPOSITION COMPRISING A PARTICULATE MATERIAL AND A BINDER MATERIAL

The present invention relates to premix comprising a particulate material and a binder material characterised in that (1) the particulate material comprises: - 1 to 50% by weight of a first material comprising ultrafine particles, said ultrafine particles having a Dv90 less than 8 μm or a BET specific surface area greater than 5 m2/g; - 1 to 70% by weight of a second material comprising fine particles, said fine particles having a Dv10 and a Dv90 from 1 to 100 μm or a BET specific surface area less than or equal to 5 m2/g; - 1 to 70% by weight of a third material comprising medium particles, said medium particles having a Dv10 and a Dv90 greater than 100 μm and less than or equal to 5 mm; (2) the binder material comprises: - a phosphate ion, an oxalate ion or a mixture thereof; and - an alkaline earth metal.

Additive for mineral binding agents

An additive composition comprising at least one lignosulfonate is used for reducing the amount of soot floating on mineral binding agents. Methods for reducing the amount of soot floating on mineral binding agents where an additive composition comprising at least one lignosulfonate is added to a mineral binding agent.

Method and Plant For Manufacturing Cement

A method for manufacturing cement by which method cement raw materials, such as limestone and clay, are comminuted in a comminution apparatus for subsequently being heated and burned into cement clinker. The cement clinker is then cooled and directed to a comminution apparatus for comminution to cement. For some embodiments of the method, the cement raw materials and cement clinker may undergo comminution in one and the same comminution apparatus.

Plant for producing cement with central grinding unit

A plant for producing cement, having a first stage for crushing raw material to form raw powder, a second stage for calcination and sintering of the raw powder to form cement clinker, a third stage for cooling the sintered cement clinker, and a fourth stage for crushing the sintered cement clinker to form cement. The first stage for crushing raw material to form raw powder and the fourth stage for crushing the sintered cement clinker to form cement are structurally combined. In this way, during servicing or repair of one crushing stage, the plant need not be shut down because, y variable circuitry switching, the crushing stages permit plant operation with reduced production output. 15-. (canceled)6. A plant for producing cement , comprising:a first stage for crushing raw material to form raw powder,a second stage for calcining and sintering the raw powder to form cement clinker,a third stage for cooling the sintered cement clinker, anda fourth stage for crushing the sintered cement clinker to form cement,wherein the first stage for crushing raw material to form raw powder and the fourth stage for crushing the sintered cement clinker to form cement are combined structurally.7. The plant as claimed in claim 6 , wherein the first stage for crushing raw material to form raw powder and the fourth stage for crushing the sintered cement clinker to form cement are each constructed as a circulating grinding system with separators claim 6 , wherein at least one gas feed line leads from the remaining stages of the plant into the first stage and into the fourth stage claim 6 , and conduct gas for separating the circulating grinding systems of the first stage and fourth stage.8. The plant as claimed in claim 7 , wherein the separators are separated structurally from the first stage for crushing raw material to form raw powder and from the fourth stage for crushing the sintered cement clinker to form cement.9. The plant as claimed in claim 8 , wherein the separator for the first ...

CLINKER SUBSTITUTE BASED ON CALCINED CLAY

A method for producing a clinker substitute for use in cement production includes predrying clay with an iron content >1.5 wt-% in a form of iron oxides and a kaolinite content <40 wt-% to a moisture <10 wt-%. The clay is comminuted to a grain size <2 mm. The clay is calcined by thermal treatment in a furnace at a temperature of 600 to 1000° C. The clay is thermally treated under reducing conditions at a temperature of 600 to 1000° C. so as to form a reduction product. The reduction product is intermediately cooled to a temperature <300° C. and finally cooled. 121-. (canceled)22. A method for producing a clinker substitute for use in cement production , the method comprising;a) predrying clay with an iron content >1.5 wt-% in a form of iron oxides and a kaolinite content <40 wt-.% to a moisture <10 wt-%;b) comminuting the clay to a grain size <2 mm;c) calcining the clay by thermal treatment in a furnace at a temperature of 600 to 1000° C.;d) thermally treating the clay under reducing conditions at a temperature of 600 to 1000° C. so as to form a reduction product;e) intermediately cooling the reduction product to a temperature <300° C.; andf) finally cooling the reduction product.23. The method according to claim 22 , wherein a clay with an iron content >1.5 wt-% in the for of iron oxides claim 22 , a CaO content >0.1 wt-% claim 22 , and a kaolinite content <40 wt-% is used as an educt.24. The method according to claim 22 , wherein the intermediate cooling of the reduction product in step e) is effected under oxygen exclusion.25. The method according to claim 22 , wherein claim 22 , during the intermediate cooling of the reduction product in step e) claim 22 , oil is introduced as an additional reducing agent.26. The method according to claim 22 , wherein the calcination in step c) is effected in a fluidized-bed reactor claim 22 , a rotary kiln claim 22 , a suspension calciner or a multiple-hearth roaster.27. The method according to claim 22 , wherein in an external ...

PROCESS FOR REFORMING THE FLY ASH AND APPARATUS THEREFOR

A process for reforming the fly ash, including the heating step that heats a raw fly ash powder containing the unburned carbon at a temperature of 780 to 1000° C. to decrease the amount of the unburned carbon contained in the raw fly ash powder; the classifying step that introduces the heat-treated fly ash containing the unburned carbon in decreased amounts obtained through the heating step into a classifying apparatus in the state of being heated at a high temperature so as to separate the fly ash into a coarse powder and a fine powder; the fine powder recovering step that recovers the fine powder of the heat-treated fly ash obtained through the classifying step by using a dust-collecting apparatus; and the milling step that mills the coarse powder of the heat-treated fly ash obtained through the classifying step until a 45 μm sieve residue becomes not more than 34% by mass, and then recovers the milled powder. 19.-. (canceled)10. A process for reforming a fly ash , including:a heating step that heats a raw fly ash powder containing an unburned carbon at a temperature of 780 to 1000° C. to decrease the amount of the unburned carbon contained in the raw fly ash powder;a classifying step that introduces the heat-treated fly ash containing the unburned carbon in decreased amounts obtained through said heating step into a classifying apparatus while conveying it maintaining a temperature of not lower than 400° C. so that the fly ash is separated into a coarse powder and a fine powder;a fine powder recovering step that recovers the fine powder of the heat-treated fly ash obtained through said classifying step by using a dust-collecting apparatus; anda milling step that mills the coarse powder of the heat-treated fly ash obtained through said classifying step until a 45 μm sieve residue becomes not more than 34% by mass, and then recovers a milled powder.11. The process for reforming the fly ash according to claim 10 , wherein the amount of the unburned carbon is ...

Process and plant for producing cement clinker and for purifying the offgases formed

The invention relates to a process and a plant for producing cement clinker and for purifying the off-gases formed thereby, wherein cement raw meal is preheated in a preheater by means of hot off-gases and then optionally precalcined, the preheated and optionally precalcined cement raw meal is burnt in a rotary kiln to form cement clinker, the cement clinker is cooled in a cooler, the hot off-gases used in the preheater are used in a raw mill for treating the cement raw meal, the dust content of a dust-containing mill off-gas thereby formed is reduced in a separating device to less than 5 g/Nm 3 , preferably less than 1 g/Nm 3 , alkali hydrogen carbonate and/or alkali carbonate is added to and mixed with the mill off-gas whose dust content has been reduced to less than 5 g/Nm 3 , and the mixed gas thereby formed is subsequently fed to a process filter for separation of dust laden with pollutants.

SPACER FLUIDS AND CEMENT SLURRIES THAT INCLUDE SURFACTANTS

According to at least one embodiment of the present disclosure, a well bore cementing system may comprise a spacer fluid and a cement slurry. The spacer fluid may be positioned within a well bore, and the spacer fluid may comprise a first surfactant package comprising one or more surfactants. The cement slurry may be positioned within the well bore, and the cement slurry may comprise a second surfactant package comprising one or more surfactants. 1. A well bore cementing system comprising: a base fluid that is an aqueous-based fluid; and', {'sub': 2', '4', 'x1, 'a first surfactant package consisting essentially of one or more surfactants having the chemical structure R1-(OCH)—OH, where R1 is a hydrocarbyl group having from 5 to 20 carbon atoms, and x1 is an integer from 5 to 15, where the one or more surfactants of the first surfactant package has a HLB of from 11 to 13.5; and'}], 'a spacer fluid positioned within a well bore, the spacer fluid comprising{'sub': 2', '4', 'x2, 'a cement slurry positioned within the well bore, the cement slurry comprising a second surfactant package consisting essentially of one or more surfactants having the chemical structure R2-(OCH)—OH, where R2 is a hydrocarbyl group having from 5 to 20 carbon atom, and x2 is an integer from 5 to 15, where the one or more surfactants of the second surfactant package has a HLB of from 11 to 13.5.'}2. The well bore cementing system of claim 1 , where the cement slurry is in contact with the spacer fluid.3. The well bore cementing system of claim 1 , where the spacer fluid is in contact with a drilling fluid and the cement slurry.4. The well bore cementing system of claim 1 , where the one or more surfactants of the first surfactant package has a HLB of from 12.5 to 13 claim 1 , the one or more surfactants of the second surfactant package has a HLB of from 12.5 to 13 claim 1 , or both.5. The well bore cementing system of claim 1 , where x1 is an integer from 5 to 10 claim 1 , x2 is an integer from 5 ...

DEVELOPMENT OF ANTI-BIT BALLING FLUIDS

Anti-bit balling drilling fluids and methods of making and using drilling fluids are provided. The anti-bit balling drilling fluid contains water, a clay-based component, and at least one of a surfactant having the formula: R—(OCH)—OH, where R is a hydrocarbyl group having from 10 to 20 carbon atoms and x is an integer from 1 and 10, or a polyethylene glycol having the formula: H—(O—CH—CH)—OH, where n is an integer from 1 to 50. Methods of making and using these drilling fluids are also provided. 2. The method of claim 1 , where the surfactant has an HLB of from 8 to 16.3. The method of claim 1 , where R is:an alkyl group comprising 12 to 15 carbons; oran alkenyl group comprising from 12 to 15 carbon atoms.4. The method of claim 1 , where x is from 5 to 10.5. The method of claim 1 , where the surfactant has an HLB of from 13 to 15.6. The method of claim 1 , where the surfactant comprises ethylene oxide condensate of branched isotridecyl alcohol.7. The method of claim 1 , where the polyethylene glycol has a weight average molecular weight of from 300 grams per mol (g/mol) to 500 g/mol claim 1 , as measured according to GPC.8. The method of claim 1 , where the drilling fluid comprises from 28 to 850 lb/bbl water based on total weight of the drilling fluid.9. The method of claim 1 , where the drilling fluid comprises from 28 to 720 lb/bbl of the clay-based component based on total weight of the drilling fluid.10. The method of claim 1 , where the drilling fluid comprises from 0.02 to 180 lb/bbl of the surfactant claim 1 , the polyethylene glycol claim 1 , or both claim 1 , based on total weight of the drilling fluid.11. The method of claim 1 , where the clay-based component comprises one or more components selected from the group consisting of lime (CaO) claim 1 , CaCO claim 1 , bentonite claim 1 , montmorillonite clay claim 1 , barium sulfate (barite) claim 1 , hematite (FeO) claim 1 , mullite (3AlO.2SiOor 2AlO.SiO) claim 1 , kaolin claim 1 , (AlSiO(OH)or kaolinite) ...

Method and device for cooling and comminuting hot cement clinker

A method and device for cooling and comminuting hot cement clinker in a cooler. The cooler has an inlet region for receiving the hot clinker, a recuperation region, a final cooling region having a clinker cooling device, an opening for blowing cooling air into the recuperation region, a tertiary air line for conducting away heated cooling air, an outlet region for discharging cooled clinker, and at least one conveyor to transport the clinker through the cooler. The hot clinker is tipped into the cooler through an input opening into the inlet region. The clinker is transported by the conveyor from the inlet region, through the recuperation region and the final cooling region to the outlet region, and ambient air is blown as cooling air into the recuperation region through the opening. Comminution of the clinker is provided by a device arranged in the recuperation region. 110-. (canceled)11. A method for cooling and comminuting hot cement clinker in a cooler wherein the cooler hasat least one inlet region for receiving the hot cement clinker,a recuperation region for the heat-recovering cooling of the hot cement clinker,a final cooling region having at least one device for further cooling the cement clinker,at least one opening for blowing cooling air into the recuperation region,a tertiary-air line for conducting away heated cooling air,an outlet region for collecting and discharging cooled cement clinker, andat least one conveying means, through which flow is able to take place, for transporting the cement clinker through the cooler,comprising the steps:tipping the hot cement clinker into the cooler from above through at least one input opening in the at least one inlet region,transporting the hot cement clinker by the at least one conveying means from the at least one inlet region, through the recuperation region and the final cooling region, to the outlet region,blowing ambient air as cooling air into the recuperation region through the at least one opening, ...

GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS

A method for grinding a solid in a vertical roller mill (VRM), comprising grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula (I): The definitions of variables R, R, and Rare provided herein. 2. The method of claim 1 , wherein the solid comprises one or more of a cement clinker claim 1 , limestone claim 1 , gypsum claim 1 , a supplemental cementitious matter claim 1 , or a mixture thereof.3. The method of claim 1 , wherein the grinding stabilizing additive comprises ethanol diglycine (EDG) claim 1 , isopropanol diglycine (IPDG) claim 1 , disodium EDG claim 1 , dipotassium EDG claim 1 , disodium IPDG claim 1 , dipotassium IPDG or mixture thereof; wherein the EDG claim 1 , IPDG claim 1 , disodium EDG claim 1 , dipotassium EDG claim 1 , disodium IPDG claim 1 , dipotassium IPDG or mixture thereof is present in an amount of 0.001-0.04% based on dry weight of solid being ground.4. The method of further including grinding the solid in the presence of at least one supplemental additive chosen from:(A) a grinding agent chosen from a glycol or glycerin, in the amount of 0.001% to 0.1% based on dry weight of the solid being ground;(B) a supplemental agent chosen from a tertiary alkanolamine or an acetate salt thereof, in the amount of 0.001-0.1% based on dry weight of the solid being ground;(C) a set retarding agent chosen from gluconate salt, a molasses, sucrose, or a corn syrup, in the amount of 0.001% to 0.06% based on dry weight of the solid being ground;(D) a set accelerating agent chosen from a thiocyanate salt, chloride salt, or mixture thereof, in the amount of 0.001% to 0.2% based on dry weight of the solid being ground;(E) a dispersing agent chosen from sodium acetate, potassium acetate, or mixture thereof in the amount of 0.005% to 0.1% based on dry weight of the solid being ground.5. ...

Efficient Formulation Stable Crude Glycerine Grinding Additive

Compositions and methods for grinding inorganic particles, such as cement, cement clinker, limestone, or other inorganic particles, involving a grinding efficiency enhancing additive comprising a crude glycerin byproduct, obtained through the use of heterogeneous catalyst processes in biodiesel fuel production. The molecules generated through the use of such heterogeneous catalytic processes result in a crude glycerin that confers good additive formulation stability, while avoiding or minimizing large quantities of undesirable compounds such as fatty acids, fatty acid esters, and salts. 1. A method for grinding particles , comprising:(A) introducing a grinding additive composition into a plurality of particles to be ground to finer particle size in a ball mill or roller mill, the particles chosen from cement, clinker, calcite, limestone, aragonite, sea shells, marl, limonite, clay, shale, sand, bauxite, blast furnace slag, fly ash, natural pozzolan, calcium sulfate, or mixtures thereof;(B) the grinding additive composition comprising a crude glycerin byproduct obtained using a heterogeneous catalytic process during biodiesel fuel production, the crude glycerin byproduct comprising: (i) 1,2,3-propanetriol in an amount of 50-99 percent; (ii) at least one glycerol ether in an amount of 5-50 percent; and (iii) chloride salt, ash, fatty acid, and fatty acid ester in an amount of 0-1 percent, the foregoing percentages based on total weight of the crude glycerin generated by the heterogeneous catalytic process; and(C) grinding together the grinding additive composition and plurality of particles in the ball mill or roller mill, whereby the particles are ground to finer particle size.2. The method of wherein the at least one glycerol ether is chosen from methoxypropanediol claim 1 , ethoxypropanediol claim 1 , propoxypropanediol claim 1 , butoxypropanediol claim 1 , or a mixture thereof.3. The method of wherein the at least one glycerol ether is a methoxypropanediol chosen ...

EARLY STRENGTH ENHANCEMENT OF CEMENTS

A method of making a cement composition, comprising grinding a cement clinker and a strength-enhancing agent, thereby producing a hydraulic cementitious powder, wherein the strength-enhancing agent is present in the hydraulic cementitious powder in an amount of from 0.001% to 0.09% based on dry weight of the hydraulic cementitious powder. The strength-enhancing agent is a compound represented by the following structural formula (I). The definitions of variables R, R, and Ras well as R, R, and Rare provided herein. 2. The method of claim 1 , further including adding to the cement clinker at least one supplemental cementitious material selected from the group consisting of: fly ash claim 1 , granulated blast furnace slag claim 1 , limestone claim 1 , calcined clay claim 1 , natural pozzolan and artificial pozzolan.3. The method of claim 1 , wherein the cement clinker includes CA in an amount of 0.3% to 9.0% based on dry weight of cement clinker.4. The method of claim 1 , further comprising grinding with the strength enhancement agent and the cement clinker at least one supplemental component selected from a grinding aid claim 1 , a set retarding agent claim 1 , or a set accelerating agent.5. The method of claim 1 , further comprising grinding with the strength enhancement agent and the cement clinker at least one grinding aid claim 1 , and further wherein:the strength enhancement agent is present in the amount of from 0.001% to 0.03% based on dry weight of the hydraulic cementitious powder, andthe at least one grinding aid is added in the amount of from 0.001% to 0.06% based on dry weight of the hydraulic cementitious powder.6. The method of claim 1 , further comprising grinding with the strength enhancement agent and the cement clinker at least one grinding aid and a set retarding agent claim 1 , wherein:the strength enhancement agent is present in the amount of 0.001-0.03% based on dry weight of the hydraulic cementitious powder;the at least one grinding aid is ...

Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions

Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one or more pozzolanically active SCMs. Quarry fines and/or limestone powder can replace and/or augment a portion of hydraulic cement binder and/or fine aggregate. Quarry fines and/or limestone powder can advantageously replace a portion of cement binder and fine aggregate, acting as an intermediate that fills a particle size void between the largest cement particles and smallest fine aggregate particles. Supplemental lime can advantageously maintain or enhance balance of calcium ions in the mix water and/or pore solution. Supplemental sulfate can advantageously address sulfate deficiencies caused by high clinker reduction, use of water reducers and/or superplasticers, and SCMs containing aluminates. Such systematic approach to beneficially using quarry fines, limestone powder, SCMs, lime, and sulfate addresses many issues and permits high clinker reduction with similar or increased strength.

Portland cement manufacture using municipal solid waste incineration ash

Various examples related to portland cement manufacturing using municipal solid waste incineration (MSWI) ash are provided. In one example, a method includes providing a raw kiln feed including MSWI to a kiln, forming ash-amended clinker (ACK) by heating the raw kiln feed in the kiln, and preparing ash-amended cement (AAC) from the ACK. The MSWI bottom ash can make up about 5% by mass or less of the raw kiln feed. The ACK can have a chemical composition that meets ASTM C150/ASTM C595, and the AAC can include arsenic, barium, copper, and lead consistent with defined Soil Cleanup Target Levels. In another example, a system includes a kiln, a kiln feed system that supplies raw kiln feed including MSWI bottom ash to the kiln, and a finish mill that grinds ACK formed by heating the raw kiln feed in the kiln to form AAC.

EMULSIFIER COMPOSITIONS FOR INVERT EMULSION FLUIDS AND METHODS OF USING THE SAME

Drilling fluid compositions include invert emulsion fluids having an oleaginous phase, an aqueous phase, and an emulsifier composition that includes an ethoxylated alcohol compound and a polyaminated fatty acid compound. The ethoxylated alcohol compound has the formula R—(OCHCH)—OH, where Ris a hydrocarbyl group having from 8 to 22 carbon atoms and n is from 1 to 8. The ethoxylated alcohol compound has a Hydrophilic-Lipophilic Balance (HLB) of less than or equal to 6. The polyaminated fatty acid compound has the formula R—CO—NH—CH—CH—N(COR)—CH—CH—NH—CO—R, where Ris a hydrocarbyl group having from 1 to 20 carbon atoms and Ris a hydrocarbyl group having 1 to 10 carbon atoms or an alkylene carboxylate group having formula —R—COOH, where Ris a saturated or unsaturated hydrocarbylene having from 1 to 10 carbon atoms. Methods of drilling wells include operating a drill in a wellbore in the presence of drilling fluid compositions. 1. A method of drilling a subterranean well , the method comprising: [ [{'br': None, 'sup': '1', 'sub': 2', '2', 'n, 'R—(OCHCH)—OH\u2003\u2003(I)'}, {'sup': '1', 'where Ris a hydrocarbyl group having from 8 to 22 carbon atoms and n is an integer from 1 to 6, the ethoxylated alcohol compound having a Hydrophilic-Lipophilic Balance (HLB) of less than or equal to 6; and'}], 'an ethoxylated alcohol compound having formula (I), [{'br': None, 'sup': 2', '2', '3, 'sub': 2', '2', '2', '2, 'R—CO—NH—CH—CH—N(COR)—CH—CH—NH—CO—R\u2003\u2003(II)'}, {'sup': 2', '3', '4', '4, 'where Ris hydrocarbyl group having from 1 to 20 carbon atoms and Ris a hydrocarbyl group having 1 to 10 carbon atoms or an alkylene carboxylate group having formula —R—COOH, where Ris a saturated or unsaturated hydrocarbylene having from 1 to 10 carbon atoms.'}], 'a polyaminated fatty acid compound having formula (II)], 'operating a drill in a wellbore in the presence of an invert emulsion fluid composition comprising a weighting material and an invert emulsion fluid, the invert emulsion ...

Cement Production

The present invention provides a method and system for manufacturing cement wherein ground particles of cement and calcium sulfate are subjected to infrared sensors, laser sensors, or both, so that emanated, irradiated, transmitted, and/or absorbed energy having wavelengths principally within the range of 700 nanometers to 1 millimeter can be monitored and compared to stored data previously obtained from ground cement and sulfate particles and preferably correlated with stored strength, calorimetric, or other data values, such that adjustments can be made to the mill processing conditions, such as the form or amounts of calcium sulfate (e.g., gypsum, plaster, anhydride), or cement additive levels. The strength and other properties of cement can be thus adjusted, and its quality can be more uniform.

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved rheology, such as improved flowability and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry contains water, a cement precursor material and a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. The cured cement have improved strength and density properties due to reduced fluid loss and even placement during curing. The cured cement contains a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. 1. A cement slurry comprising:water;a cement precursor material; anda surfactant having a HLB of from 12 to 13.5.2. The cement slurry of claim 1 , where the cement slurry contains from 10 to 70 wt % BWOC (By Weight Of Cement Precursor) water.3. The cement slurry of claim 1 , where the cement slurry contains from 10 to 90 wt % BWOC of the cement precursor material.4. The cement slurry of claim 1 , where the cement slurry contains from 0.1 to 10 wt % BWOC of the surfactant.5. The cement slurry of claim 1 , where the cement slurry contains from 0.1 to 10 wt % BWOC of one or more additives selected from the group consisting of accelerators claim 1 , retarders claim 1 , extenders claim 1 , weighting agents claim 1 , fluid loss control agents claim 1 , lost circulation control agents claim 1 , antifoaming agents claim 1 , and combinations of these.6. The cement slurry of claim 1 , where the cement precursor material is a hydraulic or a non-hydraulic cement precursor.7. The cement slurry of claim 1 , where the cement precursor material is a hydraulic cement precursor.8. The cement slurry of claim 1 , where the cement precursor material comprises one or more components selected ...

DEVELOPMENT OF ANTI-BIT BALLING FLUIDS

Anti-bit balling drilling fluids and methods of making and using drilling fluids are provided. The anti-bit balling drilling fluid contains water, a clay-based component, and at least one of a surfactant having the formula: R—(OCH)—OH, where R is a hydrocarbyl group having from 10 to 20 carbon atoms and x is an integer from 1 and 10, or a polyethylene glycol having the formula: H—(O—CH—CH)—OH, where n is an integer from 1 to 50. Methods of making and using these drilling fluids are also provided. 1. A method for using a drilling fluid in drilling operations , the method comprising: {'br': None, 'sub': 2', '4', 'x, 'R—(OCH)—OH\u2003\u2003Formula (I)'}, 'mixing water, a clay-based component, and a surfactant comprising Formula (I)where R is a hydrocarbyl group having from 10 to 20 carbon atoms,x is an integer from 1 and 10, andintroducing the drilling fluid to a subterranean formation.2. The method of claim 1 , where introducing the drilling fluid comprises injecting the drilling fluid and at least partially circulating the drilling fluid within the subterranean formation.3. The method of claim 1 , where the surfactant has an HLB of from 8 to 16.4. The method of claim 1 , where the drilling fluid comprises from 28 to 850 lb/bbl water claim 1 , from 28 to 720 lb/bbl of the clay-based component based on total weight of the drilling fluid claim 1 , and from 0.02 to 180 lb/bbl of the surfactant based on total weight of the drilling fluid.5. The method of claim 1 , where the drilling fluid has an accretion percentage of less than or equal to 18%.6. The method of claim 1 , where R is:an alkyl group comprising 12 to 15 carbons; oran alkenyl group comprising from 12 to 15 carbon atoms.7. The method of claim 1 , where x is from 5 to 10.8. The method of claim 1 , where the surfactant has an HLB of from 13 to 15.9. The method of claim 1 , where the surfactant comprises ethylene oxide condensate of branched isotridecyl alcohol.10. The method of claim 1 , where the drilling fluid ...

GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS

Method for grinding a solid in a vertical roller mill (VRM) and a cement composition prepared by the disclosed methods. A method comprises grinding a solid comprising a cement clinker under a water spray in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises: (i) an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula: (I), (ii) a glycol; or a mixture of (i) and (ii), wherein the water spray level is reduced by at least 5% compared to a control. Cement compositions prepared by the disclosed methods have the pre-hydration level (W) equal to or less than 1.5%. The values and preferred values of Rare disclosed herein. 1. (canceled)2. The method of wherein the water spray level is reduced by 5% to 80% compared to grinding without the grinding stabilizing additive.3. The method of wherein the water spray level is reduced by at least 20% compared to grinding without the grinding stabilizing additive.5. The method of claim 4 , wherein Wis equal to or less than 0.5%.6. The method of wherein Wis equal to or less than 0.3%.7. The method of wherein the solid further comprises one or more of gypsum claim 4 , a supplemental cementitious matter claim 4 , or a mixture thereof.8. (canceled)9. The method of claim 4 , wherein the grinding stabilizing additive comprises dipropylene glycol claim 4 , tripropylene glycol (TPG) claim 4 , tetrapropylene glycol claim 4 , or a mixture thereof claim 4 , and is present in the amount of 0.001%-0.1% based on dry weight of the solid being ground.10. The method of claim 4 , wherein the grinding stabilizing additive comprises ethanol diglycine (EDG) present in an amount of 0.001-0.04% based on dry weight of solid being ground claim 4 , tripropylene glycol (TPG) claim 4 , or a mixture thereof and is present in the amount of 0.001%-0.01% based on dry weight of solid being ground.11. The method of claim 4 , further including grinding the solid in the ...

LOW-CALCIUM SILICATE CEMENT AND PREPARATION AND HARDENING METHODS THEREOF

A low-calcium silicate cement, comprising: based on the total mass of oxides as 1, 50-60% of calcium oxide, 30-45% of silica, 2-6% of alumina, and 1-4% of iron oxide. A preparation method of the low-calcium silicate cement comprises: subjecting raw materials to crushing, joint grinding and uniform mixing to obtain a low-calcium silicate cement raw meal; calcining the above low-calcium silicate cement raw meal at 1050-1300° C. for 30-90 min, and cooling to obtain low-calcium silicate cement clinker; and levigating the above low-calcium silicate cement clinker till a specific surface area is 400-500 m/Kg, thereby obtaining a low-calcium silicate cement. 1. A low-calcium silicate cement , characterized in that the low-calcium silicate cement comprises , based on the total mass of oxides as 1 , 50-60% of calcium oxide , 30-45% of silica , 2-7% of alumina , and 1-4% of iron oxide; raw materials used are calcium carbonate essentially comprising calcium oxide , a clay material essentially comprising silica and alumina , and an iron oxide material essentially comprising iron oxide.2. A preparation method of a low-calcium silicate cement , characterizing by crushing , jointly grinding and uniformly mixing raw materials to obtain low-calcium silicate cement raw meal;calcining the above low-calcium silicate cement raw meal at 1050-1300° C. for 30-90 min, and cooling to obtain low-calcium silicate cement clinker; and{'sup': '2', 'levigating the above low-calcium silicate cement clinker till a specific surface area is 400-500 m/Kg, thereby obtaining a low-calcium silicate cement.'}3. The preparation method according to claim 2 , characterized in that the crushing allows the particle diameter of the raw materials to be less than 10 mm.4. The preparation method according to claim 2 , characterized in that the grinding is performed till a specific surface area is up to 300-350 m/Kg.5. The preparation method according to claim 2 , characterized in that the cooling is quick cooling ...

METHOD FOR MANUFACTURING CEMENT

The present invention pertains to a method for manufacturing cement, wherein the gypsum is first calcined separately before being inter-grinded with the clinker so as to minimize the release of water of crystallization of during the inter-grinding stage. The method produces cement of high strength at all ages, better rheology, enables higher use of fly ash, and reduces COemission during manufacturing. 1. Method of manufacturing cement , the method comprising:(a) determining or fixing the highest temperature T° C. that the working mix is expected to reach inside the mill during inter-grinding gypsum (or a dehydrated form thereof) with clinker;(b) calcining the gypsum at a temperature W° C., such that W>=0.9 T; and(c) inter-grinding the pre-calcined gypsum with the clinker inside mill such that the highest temperature of working mix inside the mill does not exceed T° C.,wherein that the change in water of crystallization of gypsum (or a dehydrated form thereof) during inter-grinding with clinker in step (c) is minimal.2. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 50% of gypsum is dehydrated to hemihydrate form [CaSO.½HO].3. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 80% of gypsum is dehydrated to hemihydrate form [CaSO.½HO].4. Method of manufacturing cement as claimed in claim 2 , wherein W is about 100° C. to about 120° C.5. Method of manufacturing cement as claimed in claim 2 , wherein T is about 110° C.6. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 50% of gypsum is dehydrated to a form of calcium sulphate with water of crystallization less than 0.5 [CaSO4.nH2O claim 1 , where 0.5>n>0].7. Method of manufacturing cement as claimed in claim 1 , wherein the gypsum is precalcined at a temperature such that more than 80% of ...

Fast setting low permeability cement and concrete

A calcium sulfoaluminate-based concrete with a permeability of less than 1000 Coulombs. Rapid-setting low chloride-ion permeability calcium sulfoaluminate (CSA) cements and concretes include CSA and a suitable polymer such as a sol-gel derived, organic-inorganic, silica based hybrid coating solutions of polystyrene-butylacrylate polymers containing active silanol groups protected by hydroxyl groups containing polyalcohol, or other polymers. Such polymers may be added as powders or as liquid in the finish mill. Other rapid-setting low chloride-ion permeability (CSA) cements and concretes include CSA with selected particle size distributions, and do not require use of any polymer. These CSA cements and concretes have low chloride-ion permeability, high early strength, fast setting times, low-shrinkage, and high freeze-thaw resistance.

Method and air-swept vertical mill for grinding hot, wet raw material and also channel-like segment

The invention relates to a method for milling hot and wet raw materials, in particular cement clinker, in a vertical airflow mill ( 1 ), to a vertical airflow mill ( 1 ), to a device ( 10 ) for supplying cooling gas, and to corresponding channel-like segments ( 20 ). The device ( 10 ) for supplying cooling gas is configured in an annular manner about the entire circumference of the vertical airflow mill ( 1 ). Inlet ( 21 ) and outlet openings ( 24 ) for the cooling gas have an adapted surface which allows an equalization of the inflow cooling air into an increasing airflow/milling particle mixture.

LOW-BELITE CSA CEMENT FOR CONSTRUCTION-CHEMICAL APPLICATIONS

The invention relates to a calcium sulfoaluminate cement, whereby it contains at least 90% by weight % C4A3$ in crystalline or amorphous form or as a mixture of crystalline and has amorphous parts. 1. Method for manufacturing a calcium sulfoaluminate cement having at least 90% by weight C4A3$ in crystalline or amorphous form or as a mixture of crystalline and amorphous parts and a specific grinding fineness according to Blaine between 3500 cm2/g and 6250 cm2/g , wherein for manufacturing the calcium sulfoaluminate cement a mixture of raw materials is used , which contains{'sub': 2', '3, 'between 41 and 50% by weight AlO,'}between 34 and 41% by weight CaO and{'sub': '3', 'between 11 and 19% by weight SO,'}as well as{'sub': '2', 'between 0.1 and 3% by weight SiOand/or'}{'sub': 2', '3, 'between 0.1 and 1% by weight FeOand/or'}{'sub': '2', 'between 0.05 and 2.5% by weight TiOand/or'}between 0.05 and 2.5% by weight ZnO,the method comprising the steps:{'sup': 2', '2, 'pulverizing the raw materials to a mixture with a specific grinding fineness according to Blaine between 3500 cm/g and 6000 cm/g and'}calcining the mixture at a calcining temperature of at least 1150° C.2. Method as claimed in claim 1 , characterized in that the pulverizing is performed in a ball mill preferably in two steps claim 1 , wherein in both steps different grinding bodies are used in the ball mill.3. Calcium sulfoaluminate cement claim 1 , characterized in that it contains at least 90% by weight C4A3$ in crystalline or amorphous form or as a mixture of crystalline and amorphous parts as well asat most 0.5% by weight free lime, calculated as CaO, and/or{'sub': '3', 'at most 0.5% by weight CA and/or'}{'sub': 12', '7, 'at most 2.0% by weight Mayenit, calculated as CA, and/or'}at most 10.0% by weight Krotit, calculated as CA,and further{'sub': 4', '6', '3-x', 'x, 'between 0.5 and 10.0% by weight CAF and its mixed crystals CAFwith 1≤x≤3 and/or'}{'sub': '2', 'between 0.5% by weight and 10.0% by weight ...

PROCESS FOR PRODUCING A CEMENT CLINKER AT LOW TEMPERATURE

The invention provides a process for producing a cement clinker comprising: (i) mixing one or more starting materials providing each at least one or more of CaO, SiO, AIO, and FeO; and, optionally, SO, to form a raw meal comprising CaO, SiO, AIO, and FeO; and, optionally, SO, wherein the molar ratios among the aforementioned oxides is given by Formula I: S(CaO)(SiO)(AlO)(FeO)(SO), wherein: “a” is comprised from 0.05 to 1, “b” is comprised from 0.1 to 0.6, “c” is comprised from 0.001 to 0.25, and “d” is comprised from 0 to 0.3 and wherein at least 35% (p/p) of the starting materials of the raw meal have a critical microwaves absorbance temperature (Tc) comprised from 15 to 650° C. and a critical microwaves absorbance time (tc) comprised from 1 min to 1 h; (ii) heating the raw meal by irradiating with microwaves during 15 min to 3 h to reach a sintering temperature comprised from 300 to 950° C.; (iii) maintaining the microwave sintering temperature of step (ii) during 1 min to 3 h by further irradiating with microwaves; and (iv) cooling the clinker obtained in step (iii). 1. A process for producing a cement clinker comprising the steps of:{'sub': 2', '2', '3', '2', '3', '2', '3', '2', '3', '3, 'claim-text': {'br': None, 'sub': 1', '2', 'a', '2', '3', 'b', '2', '3', 'c', '3', 'd, '(CaO)(SiO)(AlO)(FeO)(SO)\u2003\u2003(Formula I)'}, '(i) mixing one or more starting materials providing each: at least one or more of CaO, SiO, AlO, and FeO; and, optionally, SO3; and/or at least other one or more compounds comprising the elements of these oxides, to form a raw meal comprising CaO, SiO, Al2O, and FeO; and, optionally, SO; and/or at least other one or more compounds comprising the elements of these oxides, wherein the molar ratios among the aforementioned oxides and/or other one or more compounds comprising the elements of these oxides is given by Formula Iwherein:“a” is comprised from 0.05 to 1,“b” is comprised from 0.1 to 0.6,“c” is comprised from 0.001 to 0.25, and“d” is ...

METHODS OF USING DRILLING FLUID COMPOSITIONS WITH ENHANCED RHEOLOGY

Drilling fluid compositions include a base fluid, at least one additive chosen from an emulsifier, weighting material, fluid-loss additive, viscosifier, or alkali compound, and from 0.1 wt. % to 1 wt. %, based on total weight of the drilling fluid composition, of an ethoxylated alcohol compound having the formula R—(OCHCH)—OH, in which R is a saturated or unsaturated, linear or branched hydrocarbyl group having from 8 to 20 carbon atoms. The base fluid may be an aqueous base fluid. Methods for drilling a subterranean well include operating a drill in a wellbore in the presence of a drilling fluid composition including the base fluid, the additive, and the ethoxylated alcohol compound. 1. A drilling fluid composition consisting essentially of:a base fluid;at least one additive chosen from an emulsifier, a weighting material, a fluid-loss additive, a viscosifier, or an alkali compound; and {'br': None, 'sub': 2', '2', '7, 'R—(OCHCH)—OH \u2003\u2003(I)'}, 'from 0.1 wt. % to 1 wt. %, based on the total weight of the drilling fluid composition, of an ethoxylated alcohol compound having formula (I){'sup': '3', 'where R is a hydrocarbyl group having exactly 12 carbon atoms; in which the drilling fluid composition has a density equal to or greater than 90 lbm/ft.'}2. The drilling fluid composition of where the drilling fluid composition has a yield point of from 45 lbf/100 ftto 100 lbf/100 ftand a 10-second gel strength of from 1 lbf/100 ftto 30 lbf/100 ftas determined according to test methods provided in API RP 13B-1.3. The drilling fluid composition of claim 1 , in which the base fluid is an aqueous base fluid.4. The drilling fluid composition of claim 3 , in which the aqueous base fluid comprises at least 50 weight percent water based on the total weight of the aqueous base fluid.5. The drilling fluid composition of claim 3 , in which the aqueous base fluid is chosen from fresh water claim 3 , filtered water claim 3 , distilled water claim 3 , sea water claim 3 , salt ...

NOVEL ULTRA-HIGH PERFORMANCE CONCRETE

A hydraulic composition includes in relative parts by mass with respect to the cement 100 parts of cement the particles of which have a BET specific surface area comprised from 1.20 to 5 m/g; 32 to 42 parts of water; 5 to 50 parts of a mineral addition A1 the particles of which have a D50 less than or equal to 6 μm and selected from silica fume, metakaolin, slag, pozzolans or mixtures thereof; 90 to 230 parts of sand the particles of which have a D50 greater than or equal to 50 μm and a D90 less than or equal to 3 mm; 0.0001 to 10 parts of a superplasticizer, the active material concentration of which is 15% by mass. 1. A hydraulic composition comprising in relative parts by mass with respect to the cement:{'sup': '2', '100 parts of cement the particles of which have a BET specific surface area comprised from 1.20 to 5 m/g;'}32 to 42 parts of water;5 to 50 parts of a mineral addition A1 the particles of which have a D50 less than or equal to 6 μm and selected from silica fume, metakaolin, slag, pozzolans or mixtures thereof;90 to 230 parts of sand the particles of which have a D50 greater than or equal to 50 μm and a D90 less than or equal to 3 mm;0.0001 to 10 parts of a superplasticizer, the active material concentration of which is 15% by mass.2. The hydraulic composition according to comprising in relative parts by mass with respect to the cement:{'sup': '2', '100 parts of cement the particles of which have a BET specific surface area comprised from 1.20 to 1.7 m/g;'}38 to 42 parts of water;8 to 20 parts of a mineral addition A1 the particles of which have a D50 less than or equal to 6 μm and selected from silica fume, metakaolin, slag, pozzolans or mixtures thereof;90 to 180 parts of sand the particles of which have a D50 comprised from 100 μm to 400 μm and a D90 less than or equal to 800 μm;0.0001 to 10 parts of a superplasticizer, the active material concentration of which is 15% by mass.3. The hydraulic composition according to claim 1 , further comprising ...

ULTRA-HIGH PERFORMANCE CONCRETES HAVING A LOW CEMENT CONTENT

A hydraulic binder includes, as percentage by mass: from 17 to 55% of a Portland cement, the particles of which have a D50 of from 2μm to 11 μm; at least 5% of silica fume; from 36 to 70% of a mineral addition A1, the particles of which have a D50 of from 15 to 150 μm; the sum of these percentages being from 80 to 100%; the sum of the percentages of cement and of silica fume being greater than 28%; the mineral addition A1 being selected from slags, pozzolanic additions or siliceous additions such as quartz, silico-calcareous mineral additions, calcareous additions such as calcium carbonate or mixtures thereof. 1. A hydraulic binder comprising as percentage by mass:from 17 to 55% of a Portland cement the particles of which have a D50 comprised from 2 μm to 11 μm;at least 5% of silica fume;from 36 to 70% of a mineral addition Al the particles of which have a D50 comprised from 15 to 150 μm;a sum of these percentages of cement, silica fume and the mineral addition A1 being comprised from 80 to 100%;a sum of the percentages of cement and silica fume being greater than 28%;the mineral addition A1 being selected from among slags, pozzolanic additions or siliceous additions, siliceous limestone mineral additions, limestone additions or mixtures thereof.2. The hydraulic binder according to claim 1 , wherein the cement is a CEM I cement.3. The hydraulic binder according to claim 1 , further comprising calcium sulfate.4. The hydraulic binder according to claim 1 , wherein the cement particles have a D90 comprised from 8 μm to 25 μm.5. A mixture comprising as percentage by volume claim 1 , at least 45% of the hydraulic binder according to and at least 30% of sand claim 1 , a sum of these percentages of the hydraulic binder and the sand being comprised from 95 to 100%.6. The mixture according to claim 5 , further comprising a sand the particles of which have a D10 comprised from 100 um to 1 mm and a D50 comprised from 200 μm to 3 mm and a D90 from 300 μm to 5 mm.7. The mixture ...

USE OF ANIMAL BY-PRODUCTS FOR CEMENT PRODUCTION

A raw meal and clinker are provided based on animal by-products, such as bone ash. The resulting cement contains clinker phases such as: tricalcium phosphate (TCP), calcium sulfoaluminate (CSA), calcium aluminate phases (CA, CA, CA, CA, among others), hydroxyapatite (HA), and minor phases (anhydrite, lime, among others). 1. A raw meal of a cement clinker , comprising:about 20-70 weight percent calcium oxide;about 0-15 weight percent silicon dioxide;about 20-70 weight percent aluminum oxide;about 0-15 weight percent iron oxide;about 2.5-35 weight percent sulfur trioxide;about 0-5 weight percent magnesium oxide;about 0-5 weight percent sodium oxide; andabout 0-50 weight percent phosphorus pentoxide.2. The raw meal of incorporating animal by-product.3. The raw meal of claim 2 , wherein that animal by-product is selected from a group consisting of animal bones claim 2 , bone ash and combinations thereof claim 2 , or any material with high contents of calcium oxide and phosphorus pentoxide.4. The raw meal of claim 3 , further including at least one of calcium hydroxide claim 3 , limestone claim 3 , hydrated lime claim 3 , aluminum hydroxide claim 3 , anhydrous calcium sulfate claim 3 , hemihydrate calcium sulfate claim 3 , dehydrate calcium sulfate claim 3 , calcium fluoride.5. The raw meal of claim 4 , including about 30-45 weight percent calcium oxide.6. The raw meal of claim 5 , including about 0-2.5 weight percent silicon dioxide.7. The raw meal of claim 6 , including about 30-50 weight percent aluminum oxide.8. The raw meal of claim 7 , including about 0-1 weight percent iron oxide.9. The raw meal of claim 8 , including about 5-15 weight percent sulfur trioxide.10. The raw meal of claim 9 , including about 0-1 weight percent magnesium oxide and about 0-1 weight percent sodium oxide.11. The raw meal of claim 10 , including about 10-20 weight percent phosphorus pentoxide.12. A cement clinker made from the raw meal of .13. A cement clinker claim 2 , comprising:about 10 ...

Process for Producing a Binder

The invention relates to a method of producing a binder comprising the steps of preparing () a residual material comprising amorphous alumina-rich and/or aluminium hydroxide-rich constituents, heating () the residual material to produce a fired material, the heating () of the residual material being at a temperature of >800° C. 120-. (canceled)21. A method for producing a binder comprising:Processing of a residual material comprising amorphous alumina-rich and/or aluminium hydroxide-rich components,Heating the residue to produce a fired material,whereinthe heating of the residual material takes place at a temperature of >800° C.22. The method of claim 21 ,whereinthe residual material is formed at least partially in the form of water treatment residues.23. The method according to claim 21 ,whereinthe residual material has an X-ray amorphous content of more than 80 wt. %.24. The method according to claim 21 ,whereinthe processing of the residual material comprises the removal of water, the removal of water preferably being carried out at least via a heating or a mechanical dewatering process.25. The method according to claim 21 ,whereinthe processing of the residual material comprises comminution, the residual material preferably being shredded to a particle size of less than 100 μm.26. The method according to claim 21 ,whereinthe processing of the residual material takes place in such a way that a residual content of organic material remains in the residual material as a fuel source.27. The method according to claim 21 ,whereinin addition, a source of calcium ions is added before the residual material is heated in order to produce a mixture of materials.28. The method according to claim 21 ,whereina source of sulphate ions is additionally added before the residual material is heated in order to produce a mixture of materials.29. The method according to claim 21 ,whereinthe substances1) of a residual material,2) the calcium ion source, and3) the sulfate ion source in ...

GRINDING ADDITIVE FOR MINERAL BINDERS

The invention relates to a method for grinding an inorganic solid from the series cement clinker, pozzolan and/or raw material for cement production, where a grinding additive is added before or during grinding, and the grinding additive, based on the dry mass, comprises 6% to 80% by weight of caprolactam and 1.5% to 30% by weight of aminocaproic acid, where, based in each case on the dry mass, 0.002% to 2% by weight of the grinding additive is used, based on the total solid. Further claimed are a grinding additive and the use thereof for increasing the compressive strength of the cured product produced therewith. 1. Method for grinding an inorganic solid from the series of cement clinker , pozzolan and/or raw material for cement production , where a grinding additive is added before or during grinding ,characterized in thatthe grinding additive, based on the dry mass, comprises6% to 80% by weight of caprolactam and1.5% to 30% by weight of aminocaproic acid,where, based in each case on the dry mass, 0.002% to 2% by weight of the grinding additive is used, based on the total inorganic solid.2. The method according to claim 1 , characterized in that the grinding additive comprises at least one further grinding additive from the series of polycarboxylate ethers claim 1 , lignosulphonate claim 1 , melamine-formaldehydesulphonate claim 1 , naphthalene-formaldehydesulphonate claim 1 , mono- claim 1 , di- claim 1 , tri- and polyglycols claim 1 , polyalcohols claim 1 , alkanolamine claim 1 , amino acids claim 1 , sugars claim 1 , molasses claim 1 , organic and inorganic salts.3. The method according to claim 1 , characterized in that the grinding additive comprises 3% to 70% by weight of at least one alkanolamine or alkanolamine salt.4. The method according to claim 1 , characterized in that claim 1 , based in each case on the dry mass claim 1 , 0.01% to 0.5% by weight of the grinding additive is used claim 1 , based on the inorganic solid.5. The method according to claim 1 ...

METHOD FOR THE KINETIC REGULATION OF CEMENTITIOUS BINDERS

A method for the kinetic regulation of cementitious binders and/or cementitious binder compositions, the method including the steps of providing a cementitious binder, admixing at least one borate mineral to said cementitious binder, and optionally admixing an activator selected from the group consisting of CaO, Ca(OH), and/or CaSO. 1. A method for the kinetic regulation of cementitious binders and/or cementitious binder compositions , the method comprising the steps of1) providing a cementitious binder,2) providing at least one borate mineral,3) mixing the cementitious binder and the at least one borate mineral in any given order, and{'sub': 2', '4, '4) optionally admixing an activator selected from the group consisting of CaO, Ca(OH), and/or CaSO,'}{'sup': '1/2', 'the method wherein the dosage and/or the specific surface area of every borate mineral is chosen in a way that the product P as defined by the equation P=D·(SSA),'}{'sup': '2', 'wherein D is the dosage of the respective borate mineral in w % relative to the cementitious binder and SSA is the specific surface area of the respective borate mineral in m/g,'}is from 0.01-75.2. The method according to claim 1 , wherein the cementitious binder comprises or essentially consists of at least one calcium aluminate cement and/or at least one calcium sulphoaluminate cement.3. The method according to claim 2 , wherein the cementitious binder additionally comprises at least one Ordinary Portland Cement.4. The method according to claim 3 , wherein the weight ratio of the at least one Ordinary Portland Cement to the at least one calcium aluminate cement and/or the at least one calcium sulphoaluminate cement is from 200:1-1:1000.5. The method according to claim 1 , wherein the at least one borate mineral is of natural origin.6. The method according to claim 1 , wherein the at least one borate mineral is selected from the group consisting of calcium borate claim 1 , calcium metaborate claim 1 , takedaite claim 1 , kotoite ...

Mineralizer for calcium sulfoaluminate ternesite cements

The present invention relates to a method for the production calcium sulfoaluminate (belite, ferrite) ternesite clinker using fluxes/mineralizers comprising the following steps providing a raw meal comprising at least sources of CaO, SiO 2 , Al 2 O 3 , SO 3 sintering the raw meal in a kiln at >1200 to 1400° C. to provide a clinker, cooling the clinker, wherein a mineralizer comprising at least one compound containing chrome is added prior to sintering providing an amount of chrome calculated as Cr 2 O 3 of at least 500 mg/kg in the raw meal. The invention further relates to the clinker obtained, as well as to calcium sulfoaluminate (belite, ferrite) ternesite cements and binders produced from the clinker.

SPACER FLUID COMPOSITIONS THAT INCLUDE SURFACTANTS

In one embodiment, a spacer fluid may comprise a base fluid and a surfactant package. The surfactant package may comprise one or more surfactants, where the surfactant package comprises a first surfactant having the chemical structure R—(OCH)—OH. R may be a hydrocarbyl group having from 9 to 20 carbon atom, and x may be an integer from 5 and 15. The first surfactant may have a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5. 2. The spacer fluid of claim 1 , further comprising a weighting agent.3. The spacer fluid of claim 2 , where the weight ratio of base fluid to weighting agent is from 100:3 to 100:350.4. The spacer fluid of claim 1 , further comprising a viscosifier.5. The spacer fluid of claim 4 , where the weight ratio of base fluid to the viscosifier is from 100:0.05 to 100:7.6. The spacer fluid of claim 1 , where the weight ratio of base fluid to the first surfactant is from 100:1 to 100:20.7. A method for cementing a well bore claim 1 , the method comprising:displacing at least a portion of a drilling fluid positioned in the well bore with a spacer fluid, where the spacer fluid comprises:a base fluid; and{'sub': 2', '4', 'x, 'claim-text': R is a hydrocarbyl group having from 9 to 20 carbon atom;', 'x is an integer from 5 and 15; and', 'the first surfactant has a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5., 'a surfactant package comprising one or more surfactants, where the surfactant package comprises a first surfactant having the chemical structure R—(OCH)—OH, where8. The method of claim 7 , further comprising displacing the spacer fluid with a cement slurry.9. The method of claim 8 , where:the spacer fluid is pumped into a first conduit defined by an interior wall of a tubular in the well bore;the cement slurry is pumped into the first conduit;at least a portion of the drilling fluid exits the well bore through a second conduit defined by an exterior wall of the tubular and a wall of the well bore. This application claims priority to ...

Method and Installation Configuration for Preparing and Activating a Raw Material

The invention relates to a method for preparing and activating a raw material, wherein the raw material is comminuted by means of grinding rollers in a mill-classifier combination, and wherein the mill-classifier combination is set and operated to produce a ground product with a fineness of between D50=3 μm and D50=12 μm. Here, a part of the grinding product is comminuted by means of the mill-classifier combination to a diameter of <5 μm. Subsequently the ground product is subjected to a further classification in an ultrafine grain classifier unit which has a separation threshold in order to separate ultrafine grain with a fineness of Подробнее

STABILIZATION OF CRUDE POLYOLS FROM BIOMASS

A solubilizer is used to stabilize crude polyol produced from biomass. 1. A method comprising stabilizing with a solubilizer crude polyol produced from biomass.2. The method according to claim 1 , wherein the crude polyol has a fraction of pure polyol or 1 claim 1 ,2 claim 1 ,3-propane triol of 20-95 wt.3. The method according to claim 1 , wherein the crude polyol is crude glycerin.4. The method according to claim 3 , wherein the crude glycerin comes from biodiesel production.5. The method according to claim 1 , wherein the solubilizer comprises or consists of an alkaline substance.6. The method according to claim 1 , wherein the alkaline substance is an alkanolamine.7. The method according to claim 1 , wherein the solubilizer comprises or consists of a glycol and/or a glycolether.8. The method according to claim 1 , wherein the solubilizer is used with a fraction of 1-50 wt. % in terms of the total weight of the crude polyol.9. The method according claim 1 , wherein the crude polyol is part of a grinding adjuvant composition or used as a grinding adjuvant or a grinding adjuvant composition.10. The method according to claim 9 , wherein the grinding adjuvant composition contains in addition at least one additive chosen from the group consisting of polycarboxylates claim 9 , glycols claim 9 , amines claim 9 , aminoalkohols claim 9 , organic acids claim 9 , ligninsulfonates claim 9 , air pore formers claim 9 , defoamers and/or retarders.11. A composition comprising a crude polyol produced from biomass as well as a solubilizer claim 9 , wherein the solubilizer is present in a quantity of 1-9 wt. % in terms of the total weight of the composition.12. Composition according to claim 11 , containing or consisting of:a) 10-80 wt. % of crude polyol in the form of crude glycerin,b) 0.1-9 wt. % of the alkaline substance,c) 0-40 wt. % of a polycarboxylate,d) 0-60 wt. % of a glycol,e) 0-10 wt. % of an organic acid,f) the remainder up to 100 wt. % water.13. Composition according to ...

Method for grinding cement clinker

Method of grinding cement clinkers comprising at least two kinds of clinker phases with differing grindability.

CEMENT SLURRIES, CURED CEMENTS AND METHODS OF MAKING AND USE THEREOF

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurry contains water, a cement precursor material, an alcohol surfactant having from 10 to 20 carbon atoms and a carboxylic acid comprising an aliphatic chain having from 16 to 18 carbons. In some embodiments, the alcohol surfactant may comprise the formula R—(OCH)—OH where R is a hydrocarbyl group having from 10 to 20 carbons and x is an integer from 1 to 10. The cured cement contains water, cement, an alcohol surfactant having from 10 to 20 carbon atoms and a carboxylic acid comprising an aliphatic chain having from 16 to 18 carbons. In some embodiments, the alcohol surfactant may comprise the formula R—(OCH)—OH where R is a hydrocarbyl group having from 10 to 20 carbons and x is an integer from 1 to 10. 1. A cured cement comprising: {'br': None, 'sub': 2', '4', 'x, 'R—(OCH)—OH'}, 'an alcohol surfactant comprising ethylene oxide condensate of branched isotridecyl alcohol having the formulawhere x is an integer from 1 and 10, anda carboxylic acid comprising an aliphatic carbon chain having from 16 to 18 carbon atoms.2. The cured cement of claim 1 , where the alcohol surfactant has a hydrophilic -lipophilic balance (HLB) of from 12 to 13.5.3. The cured cement of claim 1 , where the cured cement contains from 10 to 70% BWOC (By Weight of Cement) water.4. The cured cement of claim 1 , where the cured cement contains from 0.1 to 10% BWOC of the alcohol surfactant.5. The cured cement of claim 1 , where the cured cement contains from 0.1 to 10% BWOC of the carboxylic acid.6. The cured cement of claim 1 , where the carboxylic acid is selected from the group consisting of palmitic acid claim 1 , palmitoleic acid claim 1 , vaccenic acid claim 1 , oleic acid claim 1 , elaidic acid claim 1 , linoleic acid claim 1 , α-linolenic acid claim 1 , γ-linolenic acid claim 1 , stearidonic acid claim 1 , or combinations thereof.7. The cured cement of claim 1 ...

CEMENT SLURRIES, CURED CEMENTS AND METHODS OF MAKING AND USE THEREOF

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurry contains water, a cement precursor material, an alcohol surfactant having from 10 to 20 carbon atoms and a carboxylic acid comprising an aliphatic chain having from 16 to 18 carbons. In some embodiments, the alcohol surfactant may comprise the formula R—(OCH)—OH where R is a hydrocarbyl group having from 10 to 20 carbons and x is an integer from 1 to 10. The cured cement contains water, cement, an alcohol surfactant having from 10 to 20 carbon atoms and a carboxylic acid comprising an aliphatic chain having from 16 to 18 carbons. In some embodiments, the alcohol surfactant may comprise the formula R—(OCH)—OH where R is a hydrocarbyl group having from 10 to 20 carbons and x is an integer from 1 to 10. 1. A cement slurry comprising:water;a cement precursor material; and {'br': None, 'sub': 2', '4', 'x, 'R—(OCH)—OH'}, 'an alcohol surfactant comprising ethylene oxide condensate of branched isotridecyl alcohol having the formulawhere x is an integer from 1 and 10.3. The cement slurry of claim 1 , where the alcohol surfactant has a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.4. The cement slurry of claim 1 , where the cement slurry contains from 10 to 70% BWOC (By Weight of Cement) water.5. The cement slurry of claim 1 , where the cement slurry contains from 10 to 90% BWOC of the cement precursor material.6. The cement slurry of claim 1 , where the cement slurry contains from 0.1 to 10% BWOC of the alcohol surfactant.7. The cement slurry of claim 1 , where the cement slurry has a total fluid loss of less than or equal to 50 milliliters (mL) after 30 minutes claim 1 , as measured according to ASTM API RP 10B-2.8. The cement slurry of claim 1 , where the cement precursor material is a hydraulic cement precursor material.9. The cement slurry of claim 1 , where the cement precursor material is a non-hydraulic cement precursor ...

CEMENT SLURRIES, CURED CEMENT AND METHODS OF MAKING AND USE THEREOF

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved rheology, such as improved flowability and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry contains water, a cement precursor material and a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. The cured cement have improved strength and density properties due to reduced fluid loss and even placement during curing. The cured cement contains a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. 1. A cement slurry comprising:water;a cement precursor material; and {'br': None, 'sub': 2', '4', 'x, 'R—(OCH)—OH'}, 'a surfactant comprising the formulawhere R is a hydrocarbyl group comprising from 10 to 20 carbon atoms, andx is an integer from 1 to 10.2. The cement slurry of claim 1 , where the surfactant has a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.3. A cement slurry comprising:water;a cement precursor material; anda surfactant having a HLB of from 12 to 13.5.4. The cement slurry of claim 2 , where the cement slurry contains from 10 to 70 wt % BWOC (By Weight Of Cement) water.5. The cement slurry of claim 2 , where the cement slurry contains from 10 to 90 wt % BWOC of the cement precursor material.6. The cement slurry of claim 2 , where the cement slurry contains from 0.1 to 10 wt % BWOC of the surfactant.7. The cement slurry of claim 2 , where the cement slurry contains from 0.1 to 10 wt % BWOC of one or more additives selected from the group consisting of accelerators claim 2 , retarders claim 2 , extenders claim 2 , weighting agents claim 2 , fluid loss control agents claim 2 , lost circulation control agents claim 2 , other surfactants claim 2 , ...

Additive for grinding on rolling mills

At least one glycol compound is used as a grinding aid when grinding at least one solid substance, in particular an inorganic and/or mineral solid substance, in a rolling mill, wherein the at least one glycol compound has a structure according to formula I: (formula 1) and wherein a) R1, R2, R3 each independently of one another stand for H or an alkyl, alkoxy or alkanol group with 1-8 carbon atoms, in particular with 2-4 carbon atoms; and b) X stands for a substituted or unsubstituted alkylene group with 1-8 carbon atoms, in particular 1-4 carbon atoms.

Drilling fluid compositions with enhanced rheology and methods of using same

Drilling fluid compositions include a base fluid, at least one additive chosen from an emulsifier, weighting material, fluid-loss additive, viscosifier, or alkali compound, and from 0.1 wt. % to 1 wt. %, based on total weight of the drilling fluid composition, of an ethoxylated alcohol compound having the formula R—(OCH2CH2)7—OH, in which R is a saturated or unsaturated, linear or branched hydrocarbyl group having from 8 to 20 carbon atoms. The base fluid may be an aqueous base fluid. Methods for drilling a subterranean well include operating a drill in a wellbore in the presence of a drilling fluid composition including the base fluid, the additive, and the ethoxylated alcohol compound.

ENHANCED FILTRATION CONTROL PACKAGES, WELLBORE SERVICING FLUIDS UTILIZING THE SAME, AND METHODS OF MAINTAINING THE STRUCTURE OF A WELLBORE

A wellbore servicing fluid comprises an aqueous base fluid, one or more alkali metal or alkali earth metal salts, at least one visocisifier, and a filtration control package. The filtration control package may comprise a carboxylic acid and an ethoxylated alcohol compound. Alternatively, the filtration control package may comprise a polyethylene glycol. The carboxylic acid may have from 8 to 20 carbon atoms. The ethoxylated alcohol compound may have a general formula R—(OCHCH)—OH, where R is a hydrocarbon having from 10 to 16 atoms and x is an integer from 6 to 9. The ethoxylated alcohol compound may have a hydrophilic-lipophilic balance of from 8.0 to 16.0. The polyethylene glycol may have a mass average molar mass (M) of less than or equal to 1500 daltons. 126-. (canceled)27. A wellbore servicing fluid comprising:an aqueous base fluid;xanthan gum polymer; anda filtration control package comprising from 30 wt. % to 70 wt. % of at least one carboxylic acid having from 16 to 18 carbon atoms; and{'sub': 'w', 'from 30 wt. % to 70 wt. % of a polyethylene glycol with a mass average molar mass (M) less than or equal to 1500 daltons;'}where the amount of polyethylene glycol does not exceed 30 pounds per barrel of wellbore servicing fluid.28. The wellbore servicing fluid of claim 27 , further comprising a carboxylic acid having from 8 to 20 carbon atoms.29. The wellbore servicing fluid of claim 28 , where the carboxylic acid has from 14 to 20 carbon atoms.30. The wellbore servicing fluid of claim 28 , where the carboxylic acid has from 16 to 18 carbon atoms.31. The wellbore servicing fluid of claim 27 , where the polyethylene glycol has a mass average molar mass (M) less than or equal to 800 daltons.32. The wellbore servicing fluid of claim 27 , where the polyethylene glycol is present in the wellbore servicing fluid in an amount no more than 20 pounds per barrel of wellbore servicing fluid.33. The wellbore servicing fluid of claim 28 , where the carboxylic acid is present ...

ENHANCED FILTRATION CONTROL PACKAGES, WELLBORE SERVICING FLUIDS UTILIZING THE SAME, AND METHODS OF MAINTAINING THE STRUCTURE OF A WELLBORE

A wellbore servicing fluid comprises an aqueous base fluid, one or more alkali metal or alkali earth metal salts, at least one visocisifier, and a filtration control package. The filtration control package may comprise a carboxylic acid and an ethoxylated alcohol compound. Alternatively, the filtration control package may comprise a polyethylene glycol. The carboxylic acid may have from 8 to 20 carbon atoms. The ethoxylated alcohol compound may have a general formula R—(OCHCH)—OH, where R is a hydrocarbon having from 10 to 16 atoms and x is an integer from 6 to 9. The ethoxylated alcohol compound may have a hydrophilic-lipophilic balance of from 8.0 to 16.0. The polyethylene glycol may have a mass average molar mass (M) of less than or equal to 1500 daltons. 136-. (canceled)37. A method of maintaining the structure of a wellbore , the method comprising:adding a wellbore servicing fluid to a wellbore; andoperating a drill string in the presence of the wellbore servicing fluid, maintaining the structure of the wellbore; wherein xanthan gum polymer; and', from 30 wt. % to 70 wt. % of at least one carboxylic acid having from 16 to 18 carbon atoms;', [{'br': None, 'sub': 2', '2', 'X, 'R—(OCHCH)—OH; where, 'R is a hydrocarbon group having from 12 to 14 carbon atoms:', 'x is an integer from 6 to 9; and', 'the ethoxylated alcohol compound has a hydrophilic-lipophilic balance value of from 12.5 to 13.5; and, 'from 30 wt. % to 70 wt. % of an ethoxylated alcohol compound having a general formula,'}], 'a filtration control package comprising], 'the wellbore servicing fluid comprises an aqueous base fluid;'}where the carboxylic acid and ethoxylated alcohol compound are present in the wellbore servicing fluid in an amount no more than 30 pounds per barrel of wellbore servicing fluid each.38. The method of claim 37 , where R is a branched isotridecyl hydrocarbon group.39. The method of claim 37 , where x is 8.40. The method of claim 37 , where the aqueous base fluid is fresh water ...

LUBRICANTS FOR WATER-BASED DRILLING FLUIDS

Embodiments are directed to a lubricant package for water based drilling fluids. The lubricant package includes water, a polyethylene glycol, and a lubricating agent. The lubricating agent includes triethanolamine, or a C-Calcohol ethoxylate, or a combination of triethanolamine and C-Calcohol ethoxylate. The weight ratio of the polyethylene glycol to the lubricating agent in the lubricant package is from 1:2 to 2:1. Embodiments are also directed to a water-based drilling fluid composition including an aqueous base fluid, one or more additives, and the lubricant package for water based drilling fluids. 1. A lubricant package for water based drilling fluids , the lubricant package comprising:water;{'sub': 2', '2', 'n, 'a polyethylene glycol having a general formula in accordance with H—(O—CH—CH)—OH with n representing a distribution of integers to provide an average molecular weight of 250 to 700 grams/mole; and'}{'sub': 12', '14', '12', '14, 'a lubricating agent comprising triethanolamine, or a C-Calcohol ethoxylate, or a combination of triethanolamine and C-Calcohol ethoxylate,'}in which the weight ratio of the polyethylene glycol to the lubricating agent in the lubricant package is from 1:2 to 2:1.2. The lubricant package of claim 1 , in which the polyethylene glycol comprises polyethylene glycols having a distribution of molecular weights and an average molecular weight of 500 to 700 grams/mole.3. The lubricant package of claim 1 , in which the polyethylene glycol comprises polyethylene glycols having a distribution of molecular weights and an average molecular weight of 250 to 350 grams/mole.4. The lubricant package of claim 1 , in which the lubricating agent comprises triethanolamine or a combination of triethanolamine and C-Calcohol ethoxylate.5. The lubricant package of claim 1 , in which the lubricating agent comprises C-Calcohol ethoxylate or a combination of triethanolamine and C-Calcohol ethoxylate.6. The lubricant package of claim 1 , in which the C- ...

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved rheology, such as improved flowability and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry contains water, a cement precursor material and a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. The cured cement have improved strength and density properties due to reduced fluid loss and even placement during curing. The cured cement contains a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. 1. A cement slurry comprising:water;a cement precursor material; anda surfactant having a HLB of from 12 to 13.5.2. The cement slurry of claim 1 , where the cement slurry contains from 10 to 70 wt % BWOC (By Weight Of Cement Precursor) water.3. The cement slurry of claim 1 , where the cement slurry contains from 10 to 90 wt % BWOC of the cement precursor material.4. The cement slurry of claim 1 , where the cement slurry contains from 0.1 to 10 wt % BWOC of the surfactant.5. The cement slurry of claim 1 , where the cement slurry contains from 0.1 to 10 wt % BWOC of one or more additives selected from the group consisting of accelerators claim 1 , retarders claim 1 , extenders claim 1 , weighting agents claim 1 , fluid loss control agents claim 1 , lost circulation control agents claim 1 , other surfactants claim 1 , antifoaming agents claim 1 , specialty additives claim 1 , and combinations of these.6. The cement slurry of claim 1 , where the cement precursor material is a hydraulic or a non-hydraulic cement precursor.7. The cement slurry of claim 1 , where the cement precursor material is a hydraulic cement precursor.8. The cement slurry of claim 1 , where the cement ...

SPACER FLUID COMPOSITIONS, METHODS, AND SYSTEMS FOR AQUEOUS BASED DRILLING MUD REMOVAL

Spacer fluids include an emulsion, a surfactant package, and at least one additive that modifies the rheology of the spacer fluid, the density of the spacer fluid, or both. The emulsion may include an aqueous external phase and a hydrocarbon-based internal phase. The surfactant package may include one or more surfactants. The surfactant package may also include a surfactant having the general structure R—(OCHCH)—OH, where R is a hydrocarbyl having 12 carbon atoms, 13 carbon atoms, or 14 carbon atoms. The spacer fluid may contain at least 4.25 pounds of R—(OCHCH)—OH per barrel of the spacer fluid. 1. A method of removing aqueous muds from a wellbore , the method comprising: an emulsion comprising an aqueous external phase and a hydrocarbon-based internal phase;', {'sub': 2', '4', '9, 'claim-text': R is a hydrocarbyl having from 12 to 14 carbon atoms and the surfactant has a hydrophilic-lipophilic balance from 11 to 15; and', 'at least one additive that modifies the rheology of the spacer fluid, the density of the spacer fluid, or both;, 'a surfactant package comprising one or more surfactants, where the surfactant package comprises a surfactant having the chemical structure R—(OCH)—OH, where], 'adding a spacer fluid according to any of the preceding claims to a wellbore comprising an aqueous mud, the spacer fluid comprisingpassing the spacer fluid through the wellbore, where at least a portion of the aqueous mud exits the wellbore through a conduit defined by an exterior wall of the tubular and a wall of the wellbore.213. The method of claim , in which the spacer fluid has a yield point from 10 lbf/100 ftto 50 lbf/100 ftas measured by American Petroleum Institute Recommended Practice 13B-1.313. The method of claim , in which the spacer fluid has a yield point from 10 lbf/100 ftto 25 lbf/100 ftas measured by American Petroleum Institute Recommended Practice 13B-1.413. The method of claim , in which the hydrocarbon-based internal phase comprises one or more of safra ...

SPACER FLUID COMPOSITIONS, METHODS, AND SYSTEMS FOR AQUEOUS BASED DRILLING MUD REMOVAL

Spacer fluids include an emulsion, a surfactant package, and at least one additive that modifies the rheology of the spacer fluid, the density of the spacer fluid, or both. The emulsion may include an aqueous external phase and a hydrocarbon-based internal phase. The surfactant package may include one or more surfactants. The surfactant package may also include a surfactant having the general structure R—(OCHCH)—OH, where R is a hydrocarbyl having 12 carbon atoms, 13 carbon atoms, or 14 carbon atoms. The spacer fluid may contain at least 4.25 pounds of R—(OCHCH)—OH per barrel of the spacer fluid. 1. A spacer fluid comprising:an emulsion comprising an aqueous external phase and a hydrocarbon-based internal phase;{'sub': 2', '4', '9, 'a surfactant package comprising one or more surfactants, where the surfactant package comprises a surfactant having the chemical structure R—(OCH)—OH, where R is a hydrocarbyl having 12 to 14 carbon atoms, and where the surfactant is present in a concentration of at least 4.25 pounds per barrel of spacer fluid; and'}at least one additive that modifies the rheology of the spacer fluid, the density of the spacer fluid, or both.2. The spacer fluid of claim 1 , in which the surfactant package has a hydrophilic-lipophilic balance value from 13 to 15.3. The spacer fluid of claim 1 , in which the spacer fluid has a yield point from 10 lbf/100 ftto 50 lbf/100 ftas measured by American Petroleum Institute Recommended Practice 13B-1.4. The spacer fluid of claim 1 , in which the spacer fluid has a yield point from 10 lbf/100 ftand 25 lbf/100 ftas measured by American Petroleum Institute Recommended Practice 13B-1.5. The spacer fluid of claim 1 , in which the spacer fluid has a density from 62.5 pcf to 160 pcf.6. The spacer fluid of claim 1 , in which the spacer fluid has a density from 72.0 pcf to 87.5 pcf.7. The spacer fluid of claim 1 , in which the hydrocarbon-based internal phase comprises one or more of safra oil claim 1 , diesel claim 1 , ...

DEVELOPMENT OF RETARDED ACID SYSTEM

In one embodiment, a retarded acid system comprises an aqueous acid and a retarding surfactant. The aqueous acid may comprise from 5 wt. % to 25 wt. % of a strong acid, that is, an acid having a Kgreater than or equal to 0.01. The aqueous acid may further comprise from 75 wt. % to 95 wt. % water. The retarding surfactant may have the general chemical formula R—(OCH)—OH where R is a hydrocarbon having from 11 to 15 carbon atoms and x is an integer from 6 to 10. The retarding surfactant may have a hydrophilic-lipophilic balance from 8 to 16.

METHOD OF RESTRAINING MIGRATION OF FORMATION SOLIDS IN A WELLBORE

Migration of formation solids in a wellbore is restrained by feeding a slurry, comprising water, a viscosifier, and a concentration of cement clinker particles, into the wellbore, and hydrating the clinker particles in the wellbore. The clinker particles are kept in suspension during the hydrating, and upon completion of the hydrating the hydrated clinker particles form a hardened cement consisting of a permeable structure of interconnected hydrated clinker particles. A layer of degradable lost circulation material (LCM) may be employed to separate the slurry with clinker particles from the formation surrounding the wellbore during hydrating of the clinker particles.

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved rheology, such as improved flowability and pumpability and may be used, for instance, in the oil and gas drilling industry. The cement slurry contains water, a cement precursor material and a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. The cured cement have improved strength and density properties due to reduced fluid loss and even placement during curing. The cured cement contains a surfactant having the formula R—(OCH)—OH where R is a hydrocarbyl group comprising from 10 to 20 carbon atoms and x is an integer from 1 and 10. 1. A method of cementing a casing in a wellbore , the method comprising: water; a cement precursor material; and a surfactant, where:', {'sub': 2', '4', 'x, 'claim-text': 'R is a hydrocarbyl group comprising from 10 to 20 carbon atoms, and x is an integer from 1 and 10; and', 'the surfactant comprises the formula: R—(OCH)—OH, where], 'pumping a cement slurry into an annulus between the casing and the wellbore, where the cement slurry comprisescuring the cement slurry to cement the casing in the wellbore.2. The method of claim 1 , where the surfactant has a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.3. The method of claim 1 , where the cement slurry contains from 10 wt. % to 50 wt. % BWOC (By Weight of Cement Precursor) of the water.4. The method of claim 1 , where the cement slurry contains from 10 wt. % to 70 wt. % BWOC of the water.5. The method of claim 1 , where the cement slurry contains from 10 wt. % to 90 wt. % BWOC of the of the cement precursor material.6. The method of claim 1 , where the cement slurry contains from 0.1 wt. % to 10 wt. % BWOC of the surfactant.7. The method of claim 2 , where the cement slurry contains from 0.1 to 10 wt % BWOC of ...

DEVELOPMENT OF ANTI-BIT BALLING FLUIDS

Anti-bit balling drilling fluids and methods of making and using drilling fluids are provided. The anti-bit balling drilling fluid contains water, a clay-based component, and at least one of a surfactant having the formula: R—(OCH)—OH, where R is a hydrocarbyl group having from 10 to 20 carbon atoms and x is an integer from 1 and 10, or a polyethylene glycol having the formula: H—(O—CH—CH)—OH, where n is an integer from 1 to 50. Methods of making and using these drilling fluids are also provided. 2. The method of claim 1 , where introducing the drilling fluid comprises injecting the drilling fluid and at least partially circulating the drilling fluid within the subterranean formation.3. The method of claim 1 , where the surfactant has an HLB of from 8 to 16.4. The method of claim 1 , where the drilling fluid comprises from 28 to 850 lb/bbl water claim 1 , from 28 to 720 lb/bbl of the clay-based component based on total weight of the drilling fluid claim 1 , and from 0.02 to 180 lb/bbl of the surfactant claim 1 , the polyethylene glycol claim 1 , or both claim 1 , based on total weight of the drilling fluid.5. The method of claim 1 , where the drilling fluid has an accretion percentage of less than or equal to 18%.6. The method of claim 1 , where R is:an alkyl group comprising 12 to 15 carbons; oran alkenyl group comprising from 12 to 15 carbon atoms.7. The method of claim 1 , where x is from 5 to 10.8. The method of claim 1 , where the surfactant has an HLB of from 13 to 15.9. The method of claim 1 , where the surfactant comprises ethylene oxide condensate of branched isotridecyl alcohol.10. The method of claim 1 , where the polyethylene glycol has a weight average molecular weight of from 300 grams per mol (g/mol) to 500 g/mol claim 1 , as measured according to GPC.11. The method of claim 1 , where the drilling fluid comprises from 28 to 850 lb/bbl water based on total weight of the drilling fluid.12. The method of claim 1 , where the drilling fluid comprises from ...

Methods of using drilling fluid compositions with enhanced rheology

Drilling fluid compositions include a base fluid, at least one additive chosen from an emulsifier, weighting material, fluid-loss additive, viscosifier, or alkali compound, and from 0.1 wt. % to 1 wt. %, based on total weight of the drilling fluid composition, of an ethoxylated alcohol compound having the formula R—(OCH 2 CH 2 ) 7 —OH, in which R is a saturated or unsaturated, linear or branched hydrocarbyl group having from 8 to 20 carbon atoms. The base fluid may be an aqueous base fluid. Methods for drilling a subterranean well include operating a drill in a wellbore in the presence of a drilling fluid composition including the base fluid, the additive, and the ethoxylated alcohol compound.

Method for Obtaining Microcements for Injection Grouts and Microcement Obtained

A method for obtaining microcement and the microcement obtained thereof, by means of using a closed-circuit mill with high-efficiency separators (second generation with cyclones for dust collection), thus allowing to produce at a very low cost, showing excellent properties and quality of the microcement obtained thereof. 1. A method for obtaining microcement for injection grouts through the use of a grinding system that utilizes a mill connected to a high-efficiency separator (second generation with cyclones for dust collection) , wherein the method comprises the stages of:providing raw material to the mill and grind until a determined particle size is obtained,feeding the high-efficiency separator (second generation with cyclones for dust collection) at the top part with the ground raw material,supplying the high-efficiency separator with an air current through an external fan and generating the recirculation of said air current,separating the coarse material through suction inside the main housing of the separator with the air flow or current,discharging the fine material through the top part of the housing with the air flow,moving such fine material to a plurality of cyclones through a gas conduct,separating the fine material inside the cyclones until a fraction of ultrafine material is obtained,discharging the remaining fine material through the top part of the cyclones onto aeration conveyors,moving a part of the air current together with the fraction of ultrafine material from the cyclones to a sleeve filter, andextracting such ultrafine material fraction from the filter.2. A method for obtaining microcement according to claim 1 , wherein the coarse material is discharged at the bottom part of a discharge hopper through a pendulum valve.3. A method for obtaining microcement according to claim 1 , wherein the ultrafine material is extracted from the sleeve filter by a forced air current.4. Microcement for injection grouts of the type used in bridges claim 1 , ...

QUICK-SETTING CONCRETE MIXTURE AND METHOD OF MANUFACTURE

A quick-setting concrete mixture that uses calcium sulfoaluminate as a binder cement. In one embodiment, the disclosed concrete mixture may be prepared using a revolutionary drum mixer truck and may recycle surplus or leftover concrete. In one embodiment, the mixture may use air entrainment; such as liquid air entrainment or foam generated air entrainment, to manufacture the concrete mixture.

METHOD FOR MANUFACTURING BINDERS HARDENING BY HYDRATION AND CARBONATION

A method for manufacturing a binder of a hydratable material includes providing a starting material from one or more raw materials convertible by tempering at 600 to 1200° C. into the hydratable material, tempering the starting material to provide the hydratable material containing not more than 10% by weight monocalcium silicate and at least 15% by weight hydratable phases in the form of lime and dicalcium silicate, wherein the residence time and the tempering temperature are adapted to obtain the hydratable material by converting not more than 80% by weight of the starting material, and cooling the hydratable material to provide the binder comprising the hydratable material. The binder can be mixed with water and optionally one or more of aggregate, additives, admixtures to obtain a binder paste that is placed, hydrated and carbonated to produce a building product. 2. The method according to claim 1 , further comprising grinding the binder to a fineness according to the determination of the particle size distribution by laser granulometry of D≤90 μm claim 1 , whereby the Rosin-Rammler Parameter (slope) n can vary from 0.6-1.4.3. The method according to claim 1 , wherein the hydratable material contains at least 15% by weight dicalcium silicate claim 1 , less than 10% by weight monocalcium silicate claim 1 , and from 20 to 80% by weight phases from the raw materials and/or formed during the transformation step.4. The method according to claim 1 , wherein starting material has a Ca/Si molar ratio from 0.6 to 1.2.5. The method according to claim 3 , wherein the tempering temperature ranges from 800 to 1100° C. and the residence time ranges from 5 minutes to 2 hours.6. The method according to claim 1 , wherein the raw materials are one or a mixture of two or more of concrete fines claim 1 , overburden from quarries claim 1 , low quality limestone claim 1 , marl claim 1 , and dolomite claim 1 , wherein Portland cement raw material limestone claim 1 , clay and/or ...

EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

Drilling fluids and methods of making and using drilling fluids are provided. The drilling fluid contains an aqueous phase, an oleaginous phase, and at least one surfactant having the formula R—(OCH)—OH, where R is a hydrocarbyl group having from 8 to 20 carbon atoms and x is an integer from 1 to 10. Methods of producing drilling fluids include mixing an aqueous phase, an oleaginous phase, and at least one surfactant, and shearing the mixture. Methods of using drilling fluids to drill subterranean formations include mixing an aqueous phase, an oleaginous phase, and at least one surfactant to produce a mixture, which is sheared to form a drilling fluid, and pumped through a drill string in a drill bit located in a subterranean formation. Rock cuttings are transported from the drill bit to a surface of the subterranean formation and the drilling fluid is circulated in the subterranean formation. 1. A drilling fluid comprising:an aqueous phase;an oleaginous phase; and [{'br': None, 'sub': 2', '4', 'x, 'R—(OCH)—OH'}, 'where R is a hydrocarbyl group having from 8 to 20 carbon atoms, and', 'x is an integer from 1 and 10., 'at least one surfactant comprising the formula2. The drilling fluid of claim 1 , where the surfactant has a hydrophilic-lipophilic balance (HLB) of from 8 to 16.3. The drilling fluid of claim 1 , where the drilling fluid comprises from 28 to 630 pounds per barrel (lb/bbl) of the aqueous phase based on the total weight of the drilling fluid.4. The drilling fluid of claim 1 , where the drilling fluid comprises from 28 to 810 lb/bbl of the oleaginous phase based on the total weight of the drilling fluid.5. The drilling fluid of claim 1 , where the drilling fluid comprises from 0.02 to 180 lb/bbl of the surfactant based on the total weight of the drilling fluid.6. The drilling fluid of claim 1 , where the oleaginous phase comprises one or more components selected from the group consisting of natural oil claim 1 , synthetic oil claim 1 , diesel oil claim 1 , ...

Process for fine and ultra-fine comminution of materials with brittle behavior

Enhanced blended and portland cement compositions

Cement and process for producing self-protecting cement

A process for producing cement includes combining a cement precursor and a wax, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, grinding the cement precursor and the wax to yield cement grains coated with the wax. A cement includes cement powder grains and a coating of wax on the Portland cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax. A process for making cementitious material includes combining a cement with water to yield a slurry, wherein the cement includes cement powder grains and a coating of wax on the cement powder grains, wherein the wax includes alkyl ketene dimer wax and/or alkenyl ketene dimer wax, and allowing the slurry to set.

Method for mechanically activating cement and a mechanical cement activator

The invention relates to the cement production, in particular to increasing concrete strength and reducing cement consumption. The technical result consists in the possibility of providing a specified fineness of grinding, a sufficient monodispersion, preventing the cement from aggregating and increasing the reliability and the service life of a mechanical activator. The cement is ground and mechanical activated in vortex flows with a speed of rotation of 100 000-300 000 revolutions per minute by means of the impact action produced by the collision of deorbited particles, the particle breakage by centrifugal forces, the supersaturation of particles with static electricity and local heating up to 1200°C in association with the prevention of cement aggregation. During cement processing, additives, substantially nanocomposite additives are introduced. The cement mechanical activator comprises a body (1), a frame (2), electric motors (3) with hollow shafts for supplying a cement and air, discs (4) which oppositely rotate with the same speed and are provided with washers (6) for adjusting the gap therebetween and a system (7) for controlling the grinding parameters. A boundary layer for protecting the discs (4) against abrasion wear and oppositely rotating vortex flows, in which the cement particles captured thereby rotate, are formed between the discs with the aid of air.

GROUT FOR THE PRODUCTION OF WATERPROOF SCREENS

Glowing cement clinker reduction system - has a jaw crusher to apply pressure with a coolant prior to redn. to final grain size

To reduce hot granular loose material, esp. cement clinker from a rotary kiln which is still glowing, the glowing material with a wide range of grain sizes is subjected to pressure in a loose pile, and then reduced to the final grain size pref. by cutting. Pref. the pressure is applied in the presence of a coolant. The reduction system operates on the jaw crusher principle, with at least one movable crushing jaw (2,3) and an expanded outlet gap (4). A roller is at the outlet gap, to form an adjustable outlet (7) with the extended end of one crushing jaw (2,3). The outlet (7) can be formed by two rollers, rotating at different speeds. The surfaces of the crushing jaws (2,3) and roller (5) are protected by a material, such as ceramic, to resist heat and wear. Connections for a coolant are above the roller (5) and within the entry zone (6) of the crusher. ADVANTAGE - The coolant air at the reduction process has a low dust content and most can be used in the kiln firing operation.

PRODUCTION PROCESS OF ARTIFICIAL AGGREGATE FROM TAILINGS FROM MINING, ARTIFICIAL AGGREGATE, CONCRETE COMPOSITION AND USE

The present invention relates to the process of producing artificial aggregate from tailings from ore dams. The iron ore sandy tailings are mixed with a binder and, through the mixing and pelletizing process, form the artificial aggregate. The artificial aggregate produced has a spheroidal shape, a large size, a rough surface and a color that ranges between pink and dark red. This artificial aggregate is able to replace the natural aggregate, and can be used in the manufacture of a more resistant concrete, for the base and sub-base of roads, as a decorative element for gardens and beds, in addition to being a form of storage of ore dam tailings in the form of pellets, adding value to these tailings and reducing the environmental mining impacts. 1. An artificial aggregate production process ,comprising:(a) a providing sandy mining tailings, arranged in ore dams, with a particle size of between 0.03 and 11 mm;(b) mixing the sandy mining tailings and a binder for 30 to 60 minutes until a mixture thereof is homogeneous, wherein the binder comprises commercial pozzolan or pozzolan produced from mining sterile itself after calcination thereof mixed with CPV Portland cement, and wherein the sandy mining tailings and binder mixture has 65 to 85% by weight sandy mining tailings and 15 to 35% by weight binder;(c) pelletizing the mixture at room temperature in a pelletizing machine to form pellets, wherein forming the pellets comprises adding water sparged to a humidity of from 4 and 12% to the pelletizing machine, and wherein a residence time of the mixture in the pelletizing machine ranges from 30 to 70 minutes, considering a mass of 400 kg of the mixture; and(d) curing the pellets at room temperature for a period ranging from 1 to 14 days;wherein calcining the mining sterile of step (b) is conducted with flash technology at from 750 and 950° C. and the binder comprises a mass ratio of 25 to 30% of calcined mining sterile and 70 to 75% by weight of CPV Portland cement.2. The ...

METHODS FOR PRODUCING CEMENT COMPRISING A SUPPLEMENTARY CEMENTITIOUS MATERIAL, AND CEMENT OBTAINABLE THEREBY

The invention is concerned with a method for producing a cement comprising milled cement clinker and a supplementary cementitious material, wherein the method comprises the steps of: producing the milled cement clinker by a clinkerization process, comprising the steps of calcining and subsequently milling a limestone-based raw material; producing the supplementary cementitious material by calcining a raw material of the supplementary cementitious material at a temperature of less than 980° C. and subsequently milling the calcined raw material of the supplementary cementitious material, wherein the raw material of the supplementary cementitious material has an average particle size of 1 to 300 mm; and blending the milled cement clinker and the supplementary cementitious material; wherein the method is a continuous process comprising the step of calcining the raw material of the supplementary cementitious material in a kiln with a separate heating unit and/or combustion unit. Further, the invention is concerned with a method for producing a cement comprising milled cement clinker and a supplementary cementitious material, wherein the method comprises the steps of: producing the milled cement clinker by a clinkerization process, comprising the steps of calcining and subsequently milling a limestone-based raw material; producing the supplementary cementitious material by calcining a raw material of the supplementary cementitious material at a temperature of less than 980° C. and subsequently milling the calcined raw material of the supplementary cementitious material, wherein the raw material of the supplementary cementitious material has an average particle size of 1 to 300 mm, wherein at least 5 wt % of the particles have a particle size of above 4.75 mm; and blending the milled cement clinker and the supplementary cementitious material. The invention is also concerns a cement comprising milled cement clinker and a supplementary cementitious material, wherein the ...

Цементный раствор с низким соотношением вода:цемент

Изобретение относится к составу цементного раствора и к способу цементирования скважин с его использованием. Технический результат - ускорение набора прочности и ее повышение. Цементный раствор, содержащий смесь цементной смеси и воды, в котором цементная смесь содержит, по меньшей мере, 70 об.% цементирующего дисперсного материала и стеклянные микросферы, причем вода присутствует в смеси в количестве не более, чем 50% от объема цементного раствора, а цементирующий дисперсный материал содержит портландцемент и микрокремнезем и/или коллоидный диоксид кремния по меньшей мере 60 об.%. Способ цементирования скважин предусматривает приготовление указанного цементного раствора и его закачку в скважину. Изобретение развито в зависимых пунктах формулы изобретения. 2 н. и 15 з.п. ф-лы., 3 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 415 092 (13) C2 (51) МПК C04B 7/00 (2006.01) C09K 8/46 (2006.01) E21B 33/13 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009102831/03, 14.06.2007 (24) Дата начала отсчета срока действия патента: 14.06.2007 (73) Патентообладатель(и): ШЛЮМБЕРГЕР ТЕКНОЛОДЖИ Б.В. (NL) R U Приоритет(ы): (30) Конвенционный приоритет: 29.06.2006 EP 06291087.2 (72) Автор(ы): ДРОШОН Брюно (US) (43) Дата публикации заявки: 10.08.2010 Бюл. № 22 2 4 1 5 0 9 2 2 4 1 5 0 9 2 R U (56) Список документов, цитированных в отчете о поиске: WO 01/87797 1, 22.11.2001. RU 2057250 C2, 27.03.1996. RU 2154730 C1 20.08.2000 ДАНЮШЕВСКИЙ B.C. и др. Справочное руководство по тампонажным материалам. М.: Недра, 1987, с.28, 48-52, 57, 102, 122, 241. SU 1800000 A1, 07.03.1993. RU 2057250 A3, 28.02.1993. C 2 C 2 (45) Опубликовано: 27.03.2011 Бюл. № 9 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.01.2009 (86) Заявка PCT: EP 2007/005433 (14.06.2007) (87) Публикация заявки РСТ: WO 2008/000379 (03.01.2008) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая ...

Production of nanocement and nanocement

FIELD: process engineering. SUBSTANCE: invention relates to production of nanocement. Proposed process comprises grinding by crushing rolls of Portland cement clinker, mineral siliceous additive containing SiO 2 in amount of at least 30 wt % and gypsum stone to the following grain size, wt %: 15-25 mm - 10-15; 5-7 mm - 15-20; powder - 60-75. Obtained mix is homogenized in the mixer by forced mixing. Then, it is subjected to mechanochemical activation in three-chamber ball mill to specific surface of 300-900 m 2 /kg. Polymer modifying agent is added to said ball mill which contains at least 60 wt % of sodium naphthalene sulphonate to form on Portland cement grains the solid nanocapsules of 20-100 nm in depth composed by C 10 H 7 SO 3 CaNa at the following ratio of initial components, wt %: Portland cement clinker - 30.0-90.0, gypsum stone - 0.3-6.0, modifying agent - 0.5-2.0, said mineral siliceous additive making the rest. Invention relates also to nanocement thus produced. EFFECT: higher properties of cement to class of 72,5-82,5, lower costs, fuel saving, decreased emissions of NO x , SO 2 and CO 2 . 2 cl, 7 dwg, 11 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 544 355 C2 (51) МПК C04B 7/12 (2006.01) B82B 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013111651/03, 18.03.2013 (24) Дата начала отсчета срока действия патента: 18.03.2013 (43) Дата публикации заявки: 27.09.2014 Бюл. № 27 (73) Патентообладатель(и): Закрытое акционерное общество "ИМЭТСТРОЙ" (ЗАО "ИМЭТСТРОЙ") (RU), Бикбау Марсель Янович (RU), Бикбау Ульяна Марсельевна (RU) R U Приоритет(ы): (22) Дата подачи заявки: 18.03.2013 (72) Автор(ы): Бикбау Марсель Янович (RU) (45) Опубликовано: 20.03.2015 Бюл. № 8 2 5 4 4 3 5 5 (56) Список документов, цитированных в отчете о поиске: Батраков В.Г. Модифицированные 2 5 4 4 3 5 5 R U Адрес для переписки: 127521, Москва, 17-ый пр-д Марьиной Рощи, 9, ЗАО "ИМЭТСТРОЙ", отделение интеллектуальной ...

High active cement composition and method for producing the same

본 발명은 고활성 시멘트 조성물에 관한 것이다. 또한, 본 발명은 유기 화합물을 이용한 고활성 시멘트 조성물의 제조 방법에 관한 것으로, 세부적으로는 유기 화합물을 클링커의 분쇄조제로서 볼밀 또는 롤러밀의 형태를 가지는 시멘트 밀에 임의의 시간에 적정량을 분할 첨가함으로써 고활성 시멘트 조성물을 제조하는 방법에 관한 것이다. 본 발명은 유기 화합물이 클링커의 분쇄조제로서 가장 효과적으로 작용하도록 유기 화합물의 HLB(Hydrophilic-Lipophilic Balance), 친수기수(hydrophilic radical)와 분쇄효과의 상관관계를 고려하여 적정한 HLB와 친수기수를 유기 화합물의 분자설계에 반영하고 이를 제조하는 방법을 포함한다. 본 발명은 이러한 유기 화합물을 이용하여 시멘트의 압축강도를 증진시키고 있으며, 이러한 효과는 유기 화합물의 분자설계에 있어 아민가(amine value)와 HLB의 상관관계를 고려하여 유기 화합물을 제조함으로써 유도된다. The present invention relates to a high activity cement composition. In addition, the present invention relates to a method for producing a highly active cement composition using an organic compound, and in particular, by appropriately dividing an appropriate amount of an organic compound into a cement mill having a form of a ball mill or a roller mill as a grinding aid of a clinker at any time. A method of making a highly active cement composition. The present invention considers the correlation between the HLB (Hydrophilic-Lipophilic Balance), the hydrophilic radical and the grinding effect of the organic compound so that the organic compound acts most effectively as the grinding aid of the clinker. Includes methods to reflect on and manufacture molecular designs. The present invention improves the compressive strength of cement by using such an organic compound, and this effect is induced by preparing an organic compound in consideration of the correlation between amine value and HLB in molecular design of the organic compound. 시멘트 조성물, 포틀랜드 시멘트 Cement composition, portland cement

Method to produce binder of low water consumption

FIELD: binding materials production. SUBSTANCE: binder of low water consumption is produced by mechanical/chemical treatment up to 4000 - 7000 см 2 /г , specific surface, that is their combined grinding Portland cement clinker, mineral additions, calcium sulfate and dry modifier with hardening intensifier, organic water absorbing agent. The dry modifier comprises hardening intensifier and organic water absorbing agent in the ratio of 3:7 up to 7:3 by weight with sodium or calcium sulfate being the hardening intensifier. Superplasticizer C-3 based on sodium sulfate produced in combined condensation of naphthalanesulfonic acid and formaldehyde or lignosulfonates are used as organic water absorbing agent. Amount of dry modifier is specified by preliminary production of a series of binder samples and producing viscous mass portions of normal viscosity with introducing dry modifier in the first sample amounted for 1.5 per cent of Portland cement clinker weight and further endurance for 5 - 15 min and controlling for water separation on the surface of the mass. When water separation being available next samples of binder are prepared with subsequent decreasing amount of dry modifier up sample without water separation on the surface. This sample is reference one for optimum amount of dry modifier. EFFECT: binding material of low water consumption. 2 cl, 1 tbl 6бУ16с0Сс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2029 749‘ 13) Сл С 04 В 7/52 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5022407/33, 22.01.1992 (46) Дата публикации: 27.02.1995 (56) Ссылки: 1. Сыркин Я.М. Быстротвердеющий шлакопортландцемент. М.: Госстройиздат, 1962, с.157.2. Европейский патент /ЕР/ М 0081861, кл. С О4В 7/52, 1983.3. Удомст В.Е., ОтНпуеу А.М., Тагпаг6 Ку С.М. а.о{й., [ом- Маег-Кедигтепте Втаег$ аз Мем-СепегаНоп Сетеп. Ргосее4та$ ое Спет! гу ог Сетепт+-МаНопа! Соипсй о{ ВиНатда Маепа!$. Мем ОеШ!. 06.01.1992, СоттипсайНоп М$-164. (71) ...

Apparatus for adding wet ash to cement and addition method

습회를 시멘트밀에 공급할 때에, 건조 비용이 발생하지 않고, 밀 입구부 근방에 새로운 설치 스페이스를 필요로 하지 않는 습회의 시멘트 첨가 장치 등을 제공한다. 습회를 하는 탈수기와, 탈수기에 의해 탈수한 습회를 클링커의 혼합 분쇄물의 하나와 혼합하는 혼합 설비(7)와, 혼합 설비에 의해 혼합된 습회와, 클링커와의 혼합 분쇄물의 하나의 혼합물을 시멘트밀(14)에 공급하는 공급기(11)를 구비하는 습회의 시멘트 첨가 장치 등. 습회를 탈수한 후, 밀에 첨가하는 혼합 분쇄물에 소정의 양을 혼합하고, 혼합한 습회 및 혼합 분쇄물을 밀에 첨가한다. 습회의 탈수 후의 수분을 20질량% 이하, 바람직하게는 15질량% 이하로 한다. 탈수기로서 원심분리기 등을, 혼합 설비로서 퍼그밀 등을 사용한다. 플라이애시 탈탄 설비로부터의 개질재(플라이애시 슬러리)를 습회로서 시멘트밀에 첨가하여 유효하게 이용할 수 있다. 습회, 클링커, 분쇄물, 시멘트밀, 퍼그밀. When the wet ash is supplied to the cement mill, there is provided a cement addition apparatus for the wet ash which does not incur a drying cost and does not require a new installation space near the mill inlet. Cement mill is a mixture of a dehydrator for wet-wetting, a mixing facility (7) for mixing wet dehydrated by a dehydrator with one of the mixed powders of the clinker, a wet mixture mixed by the mixing facility, and one mixture of the mixed powder with the clinker. Cement-adding apparatus of the wet ash provided with the feeder 11 to supply to (14). After the wet ash is dehydrated, a predetermined amount is mixed with the mixed ground product to be added to the mill, and the mixed wet ground and mixed ground product is added to the mill. The moisture after dehydration of wet is 20 mass% or less, Preferably it is 15 mass% or less. A centrifuge etc. are used as a dehydrator, and a pug mill etc. are used as a mixing facility. The modifier (fly ash slurry) from the fly ash decarburization plant can be added to the cement mill as wet ash to be effectively used. Wet, Clinker, Grind, Cement Mill, Pug Mill.

Method for producing cement with additive

FIELD: construction. SUBSTANCE: method for producing cement with an additive, comprising firing serpentinite, grinding it to the fraction of less than 30 microns, and subsequently administering it as a mineral additive in the amount of 2-30 wt % into Portland cement or the mixture of Portland cement clinker and gypsum at the stage of their grinding, wherein before firing the serpentinite is irrigated with the aqueous solution of a sodium, or potassium, or calcium salt, or the aqueous solution of the mixture of said salts at the total content of salts 0.02-1.0% by weight of serpentinite. EFFECT: increasing the strength. 2 ex, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 618 808 C1 (51) МПК C04B 7/36 (2006.01) C04B 7/52 (2006.01) C04B 14/04 (2006.01) C04B 111/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2016120290, 25.05.2016 (24) Дата начала отсчета срока действия патента: 25.05.2016 Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "ФОРЭС" (RU) Приоритет(ы): (22) Дата подачи заявки: 25.05.2016 (45) Опубликовано: 11.05.2017 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: RU 2582162C1, 20.04.2016. RU 2378208 C1, 10.01.2010. RU 2376255 С1, 20.12.2009. WO 2014118242 A1, 07.08.2014. WO 2015035388 A1, 12.03.2015. 2 6 1 8 8 0 8 R U (57) Формула изобретения Способ получения цемента с добавкой, включающий обжиг серпентинита, его измельчение до фракции менее 30 мкм и последующее введение в качестве минеральной добавки в количестве 2-30 масс. % в портландцемент или в смесь портландцементного клинкера и гипса на стадии их помола, причем перед обжигом серпентинит орошают водным раствором соли натрия, или калия, или кальция или водным раствором смеси указанных солей при общем содержании соли - 0,02-1,0% от массы серпентинита. Стр.: 1 C 1 C 1 (54) Способ получения цемента с добавкой 2 6 1 8 8 0 8 Адрес для переписки: 620026, ...

Cement slurry for the insulating shield and a method of making of the insulating shield

FIELD: gas and oil industries. SUBSTANCE: the invention presents a cement slurry for the insulating shield and a method to make the insulating shield, which contains mixture of water, the natural or modified clay, a special blast-furnace slag and an activating agent. The invention also presents a method of usage of the cement slurry, that is dealt with usage of a special blast-furnace slag for preparation of this cement slurry. Technical result: increased strength of the cement slurry at the same ratio of water / cement, increased penetrating power at the same content of the dry materials, more sluggish hardening, that in the higher degree is suitable for direct boring with a cement slurry, obtaining of a system with poor reactivity allowing completely to get rid of moderating materials application. In the cement slurry for the insulating shield, that contains clay, blast-furnace slag and an activating agent, clay is presented by bentonitic slimes, and blast-furnace slag has a maximum size of grains from 50 up to 100 microns. The maximum size of grains of blast-furnace slag in preferable version makes 80 microns. Blast- furnace slag can be characterized by mass ratio of CaO/SiO 2 within the limits from 1.1 up to 1.35. Blast-furnace slag has a chemical module exceeding 500. In the capacity of an activating agent there is a possibility to chose among: caustic sodium, caustic potassium, sodium or potassium carbonate or bicarbonate, gypsum, quicklime or slaked lime, mixture of these compounds and portland cement. The cement slurry may contain from 1 up to 10 mass % of an activating agent fin respect to the blast-furnace slag mass. The weight ratio of cement / water lays within the limits from 0.25 up to 1.1. In the method of making the insulating shield they exercise boring and use the above-stated cement slurry. EFFECT: increased strength of the cement slurry at the same ratio of water / cement, increased penetrating power at the same content of the dry materials, the ...

向水泥添加湿灰的装置以及添加方法

提供在向水泥碾磨机供给湿灰时，不发生干燥成本、在水泥碾磨机入口部附近无需新的设置空间的向水泥添加湿灰的装置等。向水泥添加湿灰的装置等具有：将湿灰脱水的脱水机、将经过脱水机脱水后的湿灰与一种混合熔渣的粉碎物进行混合的混合设备(7)、将通过混合设备混合后的湿灰和一种混合熔渣的粉碎物的混合物向水泥碾磨机(14)供给的供给机(11)。在将湿灰脱水后，向添加到碾磨机的混合粉碎物中混合规定的量，将混合后的湿灰和混合粉碎物添加到碾磨机。湿灰脱水后的水分为20质量％以下，最好为15质量％以下。脱水机使用离心分离机等，混合设备使用搅拌机等。可将来自烟灰脱碳设备的改性灰(烟灰浆)作为湿灰添加到水泥碾磨机、进行有效的利用。

Method of preparation of portland cement binder with the addition of high-calcium ash of thermal power plants (options)

FIELD: construction materials. SUBSTANCE: group of inventions relates to the field of construction materials; it can be used in the production of various concrete and mortar mixtures. A method for preparing a Portland cement binder with the addition of high-calcium ash from thermal power plants includes joint grinding of Portland cement clinker, and gypsum stone, and adding high-calcium ash to the binder at the time of preparing a concrete or mortar mixture. Before adding high-calcium ash, the content of free lime in it is preliminarily determined. After that, the ash is added to the binder in the following ratio, wt.% by weight of cement: the content of free lime in high-calcium ash is equal to or less than 10, but more than 6% to 20, or the content of free lime in high-calcium ash is equal to or less than 6, but more than 4% to 30, or the content of free lime in high-calcium ash is equal to or less than 4% to 40. A method for preparing a Portland cement binder with the addition of high-calcium ash from thermal power plants includes the joint grinding of Portland cement clinker, and gypsum stone, and the addition of high-calcium ash and microsilica or flask in an amount of 3-10% by weight of cement to the binder at the time of preparing a concrete or mortar mixture. Before adding high-calcium ash, the content of free lime in it is preliminarily determined. After that, the ash is added to the binder in the following ratio, wt.% by weight of cement: the content of free lime in high-calcium ash is equal to or less than 12, but more than 8% to 20, or the content of free lime in high-calcium ash is equal to or less than 8, but more than 6% to 30, or the content of free lime in high-calcium ash is equal to or less than 6% to 40. EFFECT: reduced consumption of Portland cement per cubic meter of concrete or mortar mixture, increased early two-day strength and strength after steaming at a temperature reduced to 60 °C, reduced cost of thermal energy for steaming. 2 cl, 3 tbl ...

Method for preparing portland cement binder with addition of high-calcium ash from thermal power plants

FIELD: building materials. SUBSTANCE: invention relates to the field of building materials and can be used in the production of various concrete and mortar mixtures. A method for preparing a Portland cement binder with the addition of high-calcium ash from thermal power plants includes joint grinding of Portland cement clinker, gypsum stone, granular blast-furnace slag, adding high-calcium ash to the binder at the time of preparation of a concrete or mortar mixture, before adding high-calcium ash, the content of free lime in it is preliminarily determined, after which ash to binder in the following ratio, wt.% of the weight of cement: the content of free lime in high-calcium ash is equal to or less than 11%, but more than 7% to 20, or the content of free lime in high-calcium ash is equal or less than 7%, but more than 5% up to 30, or the content of free lime in high-calcium ash is equal to or less than 5% up to 40. EFFECT: invention is aimed at reducing the consumption of cement, reducing the cost of Portland cement binder, simplifying the technology for the manufacture of cement and concrete mixtures while maintaining strength and deformability of concrete. 1 cl, 2 tbl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 748 328 C1 (51) МПК C04B 7/52 (2006.01) C04B 28/04 (2006.01) C04B 111/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C04B 7/52 (2021.02); C04B 28/04 (2021.02); C04B 2111/20 (2021.02) (21)(22) Заявка: 2020130414, 14.09.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Овчаренко Геннадий Иванович (RU) Дата регистрации: 24.05.2021 Приоритет(ы): (22) Дата подачи заявки: 14.09.2020 (45) Опубликовано: 24.05.2021 Бюл. № 15 2 7 4 8 3 2 8 R U (54) Способ приготовления портландцементного вяжущего с добавлением высококальциевой золы теплоэлектростанций (57) Реферат: Изобретение относится к области следующем соотношении, мас.% от массы строительных материалов и может быть ...

セメント組成物

(57)【要約】 【課題】 この発明は、予めセメントの硬化促進効果を 有するＣａＯ結晶を含有したセメントクリンカを焼成 し、これに二水石膏又はこれと硫酸アルカリを添加，混 合することによって、コンクリートの打設前までは流動 性を保持し、これを打設した後は早期に高い強度を発現 するセメント組成物を得ようとするものである。 【解決手段】３ＣａＯ・ＳｉＯ 2 −間隙物質−ＣａＯ結 晶を主要鉱物組成とするセメントクリンカを二水石膏又 はこれと硫酸アルカリとともに粉砕した超早強セメント 組成物であって、セメントクリンカの珪酸率が２．０〜 ５．０、鉄率が０．５〜４．０、ＣａＯ結晶径が１３μ ｍ以上、ＣａＯ結晶量がセメントクリンカ全量に対し３ 〜１０重量％、セメント粉末度がブレーン比表面積で３ ０００〜６０００ｃｍ 2 ／ｇであることを特徴とする。

Method of binder preparing

FIELD: building materials. SUBSTANCE: method involves roasting raw mixture of crystalline shales with calcium carbonate at 900-1050 C followed by grinding roasting product with gypsum. Method of article making based on binder prepared involves binder mixing with filler, article pressing and their steam-curing. Qualitative indices of articles correspond to ГОСТ 379-79. EFFECT: decreased cost, energy consumption. 2 tbl ОДДЭУОсС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ "” 2046 770‘ 13) Сл С 04 В 7/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 5060502/33, 28.09.1992 (46) Дата публикации: 27.10.1995 (56) Ссылки: Бутг Ю.М. и др. Химическая технология вяжущих материалов. 1980, с.111-112.Волженский А.В. и др. Минеральные вяжущие вещества. 1979, с.138-139.Кудеярова Н.П. и др. Получение высокопрочного силикатного вяжущего автоклавного твердения, - Сб. научн.трудов МИСИ, БТИСМА, 1983, С.18-20. (71) Заявитель: Белгородский технологический институт строительных материалов (72) Изобретатель: Гладких Ю.П., Завражина В.И. (73) Патентообладатель: Белгородский технологический институт строительных материалов (54) СПОСОБ ПОЛУЧЕНИЯ ВЯЖУЩЕГО (57) Реферат: Изобретение относится к производству строительных материалов и может быть использовано при производстве вяжущих и стеновых изделий, в частности силикатного кирпича. Цель изобретения: удешевление продукции, снижение материальных и энергетических затрат при производстве вяжущего и изделий на его основе. Сущность изобретения: способ получения вяжущего включает обжиг сырьевой смеси кристаллических сланцев с карбонатом кальция при 900-1050°С и последующий помол продукта обжига с гипсом, а способ изготовления изделий на его основе смешивание вяжущего с заполнителем, прессование изделий и их пропаривание. Качественные показатели изделий удовлетворяют требованиям ГОСТ 379-19. 2 табл. 2046770 С1 КО ОДДЭУОсС ПЧ Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) 13) ВО ” 2046 770' 51) ...

微细高强度高贝利特水泥及其制备方法

本发明是关于一种微细高强度高贝利特水泥及其制备方法。该水泥包括水泥熟料与石膏，水泥熟料与石膏的重量比为：96.5:3.5‑94:6；所述的水泥熟料矿物组成为(重量百分比)：C 3 S：10‑35％，C 2 S：40‑75％，C 3 A：1‑5％，C 4 AF：10‑20％；其中，所述微细高强度高贝利特水泥的细度为D90≤30μm。本发明通过控制水泥颗粒大小，进而加快水泥水化进程，在不改变高贝利特水泥固有特点的前提下大幅提高高贝利特水泥的早期强度。

Enhanced blended and portland cement compositions

본 발명은 0.2%이하의 고급 트리알칸올아민과 혼합될 때 7-일 및 28-일 압축강도가 현저하게 증가되는, 4% 이상의 C 4 AF를 함유한 강도증진 배합 시멘트 조성물 및 포트랜드 시멘트에 관한 것이다. 강도 증진용 고급 트리알칸올아민 첨가제는 시멘트 분말과 혼합할 수 있으며, 혹은 마무리 분쇄중에 시멘트 클링커와 상호분쇄할 수 있다. The present invention relates to a strength-enhancing blended cement composition and Portland cement containing at least 4% C 4 AF, which has a significant increase in 7- and 28-day compressive strength when mixed with up to 0.2% higher trialkanolamines. will be. Strength enhancing trialkanolamine additives can be mixed with the cement powder or can be crushed with the cement clinker during finish grinding.

Cementitious materials and method of making the same

The cementitious material comprises an initial mixture of portland cement clinker and a modifier ranging in weight from approximately 0.5% to 5%, preferably 1%, of the weight of the clinker. The modifier is selected from a group comprising (a) a melamine formaldehyde-sodium bisulfite copolymer, and (b) sodium naphthalene sulfonate. The portland cement clinker and the modifier are intimately mixed and caused to react together in a solid state reaction by energetically grinding them together in a highly energetic ball-and-tube grinding mill to a high degree of fineness of at least approximately 5000 Blaine. Modified cementitious materials are produced by providing an additional constituent in the initial mixture comprising a hard, dense, substantially inert mineral material ranging up to 70% of the mixture by weight. The percentages of the portland cement clinker and the modifier are correspondingly reduced. The modified initial mixture is ground as before. The cementitious materials are substituted for traditional portland cement in making concrete having increased strength, density, durability and impermeability, while having decreased water demand, porosity and capillarity. The mineral material is selected from a group comprising sand, comminuted stone, comminuted scrap material from glass making, comminuted waste material from ore enrichment plants, comminuted volcanic material, comminuted slag, fly ash, comminuted pumice, and comminuted perlites.

Cement compositions and methods utilizing nano-hydraulic cement

An exemplary method includes introducing a treatment fluid comprising nano-hydraulic cement into a subterranean formation. The treatment fluid may include a drilling fluid, a completion fluid, a stimulation fluid, a well clean-up fluid or a cement composition. Another example method comprises introducing a cement composition comprising nano-hydraulic cement, hydraulic cement, and water into a subterranean formation; and allowing the cementing composition to set in the subterranean formation. An example well treatment fluid comprises nano-hydraulic cement.

Sealant compositions and methods utilizing nano-particles

The present invention includes well treatment fluids and methods utilizing nano-particles and, in certain embodiments, to sealant compositions and methods utilizing nano-particles. The nano-particles may be incorporated into the sealant composition in different forms, including as discrete nano-particles, encapsulated nano-particles, agglomerated nano-particles, or in a liquid suspension.

Well bore drilling direction changing method

This invention relates to a method of changing the direction of drilling a well bore wherein a cement plug is formed in the well bore at a location therein where the direction of drilling is to be changed and a pilot hole is drilled in the plug. The cement plug is formed using a slurry containing hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The use of such finely divided hydraulic cement significantly reduces the waiting time required for the slurry to develop sufficient compressive strength.

Squeeze cementing

This invention relates to a method of terminating the undesirable flow of fluid through a gravel pack in a wellbore, or from a highly permeable portion of or fracture in a subterranean formation into a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in either a slurry of water or hydrocarbon liquid, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.

Primary cementing

This invention relates to a method of cementing a cylinder in a bore, such as a casing in a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement which is utilized in a water slurry, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.

Repair of microannuli and cement sheath

This invention relates to a method of repairing holes, channels, voids and microannuli in a cement sheath situated in the annular space between a casing and the wall of a wellbore penetrating a subterranean earth formation, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in a water slurry, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.

Squeeze cementing

This invention relates to a method of terminating the undesirable flow of water from a highly permeable portion of a portion of or a fracture in a subterranean formation into a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement, which is utilized in a slurry of a hydrocarbon liquid and a surfactant, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.

Fly ash cementing compositions and methods

The present invention provides fly ash cementing compositions and methods which are useful in any cementing application, and are particularly suitable for cementing in subterranean zones penetrated by well bores. The cementing compositions can include a portion of the drilling fluid used to drill a well bore as a component thereof. Also, drilling fluid can be disposed of by combining it with the fly ash cementing composition whereby it solidifies in a disposal location.

Cement agglomeration

A dry, agglomerated cement material, a method of preparing the dry, agglomerated cement material, a method of cementing, and an apparatus for agglomerating particulate materials. The dry, agglomerated cement material comprises a plurality of particles of a cement bonded together by a water-soluble binder material. The dry, agglomerated cement material is prepared by depositing the water-soluble binder material on the particles such that the binder material bonds the particles together. The inventive agglomerated cement material can be conveniently transported by both pneumatic and non-pneumatic means. The method of cementing comprises the step of mixing the agglomerated cement material with water to form a cement slurry. The agglomerating apparatus comprises: a vessel; a cone blender associated with the vessel such that the cone blender is operable for fluidizing a particulate material placed in the vessel; a fluidizing gas delivery system or delivering a fluidizing gas to the cone blender; and a binder solution delivery system for delivering a binder solution into the vessel.

Well cementing methods and compositions for use in cold environments

The present invention provides well cementing methods and compositions for use in cold environments which are particularly suitable for cementing conductor strings in deep water offshore wells. The cement compositions are basically comprised of a relatively coarse particulate hydraulic cement mixed with an ultra fine particulate hydraulic cement, sufficient water to form a pumpable slurry and a fluid loss control additive.

Method of making blended cement compositons

A method of preparing a blended cement composition is provided. The method comprises intergrinding a composition comprised of a major amount by weight of portland cement clinker, a minor amount by weight of a pozzolanic material and a grinding aid in an amount of from about 0.1 % to about 5 % based on the total weight of portland cement clinker and pozzolanic material, said grinding aid being comprised of a naphthalenesulfonate formaldehyde condensate.

Very low-density cement slurry

A cement slurry having a density between 750 kg/m 3 and 1,000 kg/m 3 , comprising a solid fraction comprising: either 75% - 90% (by volume) of lightweight particles having a mean particle size between 10 and 60 µm; 10% - 25% (by volume) of Portland cement having a mean particle size of between 10 and 50 µm, or micro-cement having a mean particle size between 0.5 and 5 µm; or: 20% - 50% (by volume) of lightweight particles having a mean particle size between 10 and 60 µm; 10% - 25% (by volume) of Portland cement having a mean particle size of between 10 and 50 µm, or micro-cement having a mean particle size between 0.5 and 5 µm; 35% - 65% (by volume) of lightweight particles having a mean particle size between 100 and 200 µm; and a liquid fraction present in an amount of 37% - 50% (by volume) of the total volume. Such cements have remarkable mechanical properties due to their very low porosity in spite of having very low density.

Lightweight well cement compositions and methods

Lightweight cement compositions and methods of cementing a subterranean zone penetrated by a well bore utilizing the compositions are provided. A lightweight cement composition of the invention is basically comprised of a coarse particulate hydraulic cement, an ultrafine particulate hydraulic cement mixture comprised of slag cement and a Portland or equivalent cement, fly ash, fumed silica, hollow glass spheres and water.

Permeable cements

The present invention concerns a cement slurry with high permeability and good compressive strength, comprising a solid fraction constituted by: 35% to 80% (by volume) of particles with a mean size in the range 100 microns (μ) to 800μ; 0% to 15% (by volume) of particles with a mean particle diameter in the range 0.1 microns to 10 microns; and 10% to 40% (by volume) of particles with a mean particle diameter in the range 20μ to 50μ; a fraction of said-solid particles being constituted by a cement, and preferably a further fraction by self-destructive particles; a liquid fraction in a water/solid ratio in the range 38% to 50% by volume; and a percentage of cells, provided by a gas or a liquid which is not miscible with water, in the range 30% to 60% of the final volume of the slurry.

Cement Compositions and Methods Utilizing Nano-Hydraulic Cement

An exemplary method includes introducing a treatment fluid comprising nano-hydraulic cement into a subterranean formation. The treatment fluid may include a drilling fluid, a completion fluid, a stimulation fluid, a well clean-up fluid or a cement composition. Another example method comprises introducing a cement composition comprising nano-hydraulic cement, hydraulic cement, and water into a subterranean formation; and allowing the cementing composition to set in the subterranean formation. An example well treatment fluid comprises nano-hydraulic cement.

Early high-strength portland cement and method of manufacture

A cement with rapid strength gain having normal setting and volume change characteristics and its method of manufacture are disclosed. The cement has substantially all particles over 20 microns removed which advantageously results in higher early strength than normal portland cements. This is important in the prestress and precast concrete industry, and early high-strength cement is desirable for other uses such as patching or resurfacing highways and airport runways or in operations where early form removal is desired. The use of chlorides or other accelerators is unnecessary to obtain early high strengths; although, these and plasticizers can be used if desired.

Lightweight well cement compositions and methods

Lightweight cement compositions and methods of cementing a subterranean zone penetrated by a well bore utilizing the compositions are provided. A lightweight cement composition of the invention is basically comprised of a coarse particulate hydraulic cement, an ultrafine particulate hydraulic cement mixture comprised of slag cement and a Portland or equivalent cement, fly ash, fumed silica, hollow glass spheres and water.

Cement compositions and methods utilizing nano-hydraulic cement

An exemplary method includes introducing a treatment fluid comprising nano-hydraulic cement into a subterranean formation. The treatment fluid may include a drilling fluid, a completion fluid, a stimulation fluid, a well clean-up fluid or a cement composition. Another example method comprises introducing a cement composition comprising nano-hydraulic cement, hydraulic cement, and water into a subterranean formation; and allowing the cementing composition to set in the subterranean formation. An example well treatment fluid comprises nano-hydraulic cement.

Fine particle size cement compositions and methods

Fine particle size cement compositions and methods of using such compositions for cementing in a subterranean zone penetrated by a well bore are provided. The compositions are basically comprised of a fine particle size hydraulic cement, a fine particle size pozzolanic material and sufficient water to form a pumpable slurry.