СПОСОБ УЛУЧШЕНИЯ ИЗВЛЕЧЕНИЯ ПРОДУКТА

Изобретение может быть использовано в горнодобывающей промышленности при выделении минеральных компонентов из руд для улучшения эффективности процессов разделения пенной флотацией. Способ предусматривает добавление к исходной суспензии эффективного количества фосфорорганического соединения, выбранного из группы, состоящей из полиаминополиэфирметиленфосфонат - ПАПЭМФ, в форме кислоты или соли; триалканоламинтри(эфир фосфорной кислоты), в форме кислоты или соли. Затем осуществляют селективную флотацию продукта в виде частиц путем барботирования суспензии до формирования концентрата и жидкого раствора. Способ обеспечивает повышение степени извлечения целевого продукта в виде частиц из тонко измельченной сульфидной минеральной руды, а также приводит к уменьшению энергетических затрат и увеличению эффективности других стадий обработки и очистки, что помогает в охране окружающей среды. 14 з.п. ф-лы, 1 табл., 1 пр.

ПЕНООБРАЗОВАТЕЛИ ДЛЯ ФЛОТАЦИИ МИНЕРАЛОВ

Предложенная группа изобретений относится к способам и композициям для улучшения разделения, относящегося к типу пенной флотации. Микроэмульсия для улучшения эффективности разделения пенной флотацией содержит непрерывную фазу, которая представляет собой текучий носитель и дисперсную фазу. Микроэмульсия в целом при расчете на массу образована из: 1-96% воды и пенообразующего компонента, содержащего 1-50% спиртовой смеси, которая поступает из потока отходов от производства 2-этилгексанола, 1-20% С-Сжирных кислот, 1-30% 2-бутоксиэтанола и 1-10% гидроксида калия, где общая сумма содержания компонентов микроэмульсии равна 100%. По второму варианту микроэмульсия в целом при расчете на массу образована из: 1-96% воды и пенообразующего компонента, содержащего 1-50% спиртовой смеси, которая поступает из потока отходов от производства 2-этилгексанола, 1-20% С-Сжирных кислот, 1-30% пропиленгликоля и 1-10% гидроксида калия, где общая сумма содержания компонентов микроэмульсии равна 100%. По третьему ...

СПОСОБ УЛУЧШЕНИЯ СЕЛЕКТИВНОСТИ И ИЗВЛЕЧЕНИЯ ПРИ ФЛОТАЦИИ СУЛЬФИДНЫХ НИКЕЛЕВЫХ РУД, КОТОРЫЕ СОДЕРЖАТ ПИРРОТИН, ПУТЕМ ИСПОЛЬЗОВАНИЯ СИНЕРГИИ МНОЖЕСТВА ДЕПРЕССОРОВ

Предложенное изобретение относится к способу селективной пенной флотации сульфидных минералов с применением комбинации депрессорных реагентов. Способ улучшения селективности и извлечения ценных сульфидных минералов цветных металлов, сочетающихся с сульфидами железа, в процессе пенной флотации сульфидов цветных металлов содержит обработку сульфидной руды, либо свежеразмолотой суспензии, либо предварительно обработанного и мелкоразмолотого промежуточного продукта, которая(ый) содержит по меньшей мере один или более сульфидных минералов имеющих промышленное значение цветных металлов с сульфидами железа, в водной щелочной суспензии в присутствии собирателя, пенообразователя, рН-модификатора, газа-носителя, распределенного по суспензии, и множественных депрессоров, осуществление пенной флотации для подавления сульфидов железа с одновременным обеспечением флотации ценных сульфидов цветных металлов. Депрессоры содержат по меньшей мере один органический полимер, выбранный из лигносульфонатов из ...

СПОСОБ ИЗВЛЕЧЕНИЯ ИЗ РУД МИНЕРАЛОВ, СОДЕРЖАЩИХ ПОЛИМЕТАЛЛЫ, ЗОЛОТО И МЕТАЛЛЫ ПЛАТИНОВОЙ ГРУППЫ

Сущность способа: получают водную суспензию шлама тонкоизмельченных высвобожденных частиц руды, кондиционируют суспензию шлама эффективным количеством гемицеллюлозы, собирателем минерала и пенообразователем и выделяют ценные минералы путем пенной флотации. Собирателем служит ксантогенат, пенообразователем - триэтоксибутан. Гемицеллюлозу получают из выжимок, остающихся после переработки растительного сырья. 2 з.п.ф-лы, 6 табл.

ФЛОТАЦИОННЫЕ РЕАГЕНТЫ И СПОСОБ ФЛОТАЦИИ С ИХ ИСПОЛЬЗОВАНИЕМ

... 1. Способ повышения извлекаемости ценных сульфидных минералов и/или минералов драгоценных металлов из руды, содержащей указанный минерал и/или минерал драгоценного металла и один или несколько из силиката Mg, шламообразующих минералов и/или глины, каковой способ включает: добавление на одной или нескольких стадиях процесса пенной флотации, осуществляемого в кислотных условиях, модификатора пенной фазы, содержащего полимер, включающий одну или несколько функциональных групп, подобранных из группы, состоящей из сульфонатных групп или соответствующих им кислот, фосфатных групп или соответствующих им кислот, фосфонатных групп или соответствующих им кислот, фосфинатных групп или соответствующих им кислот, гидроксаматных групп или соответствующих им кислот, силановых групп и силанольных групп,тем самым, повышается извлекаемость ценных сульфидных минералов и/или минералов драгоценных металлов из указанной руды.2. Способ по п. 1, в котором полимер дополнительно включает одну или несколько гидрофобных ...

МОДИФИЦИРОВАННЫЕ АМИНОАЛЬДЕГИДНЫЕ СМОЛЫ И ИХ ПРИМЕНЕНИЕ В ПРОЦЕССАХ РАЗДЕЛЕНИЯ

... 1. Способ обогащения руды, включающий: ! a) обеспечение руды, включающей ценный материал и одну или более примесей; и ! b) контактирование водной суспензии руды с аминальдегидной смолой, включающей повышающее адгезию вещество на основе силана; ! с) во время или после стадии контактирования отделение ценного материала от суспензии; ! в котором ценный материал выбирают из фосфата, поташа, извести, сульфата, угля, гипса, синтетического гипса, железа, платины, золота, палладия, титана, молибдена, меди, урана, хрома, вольфрама, марганца, магния, свинца, цинка, глины, угля, серебра, графита, никеля, боксита, буры или бората. ! 2. Способ по п.1, в котором одну или более примесей выбирают из песка, глины, оксида железа, оксида титана, железосодержащего оксида титана, слюды, ильменита, турмалина, силиката алюминия, кальцита, доломита, ангидрита, железомагнезиального минерала, полевого шпата, карбоната кальция и карбоната магния, вулканической породы, почвы, ртути, кадмия, свинца, мышьяка, азота, ...

ФЛОТАЦИОННЫЕ РЕАГЕНТЫ И СПОСОБ ФЛОТАЦИИ С ИХ ИСПОЛЬЗОВАНИЕМ

... 1. Способ повышения извлекаемости ценных сульфидных минералов или минералов драгоценных металлов из руды, содержащей силикат Mg, шламообразующие минералы и/или глину, в щелочных условиях, каковой способ включает следующие стадии: ! дробление руды, содержащей сульфид или драгоценный металл, каковая руда содержит также силикат Mg, шламообразующие минералы и/или глину, с получением дробленой руды; ! размол указанной дробленой руды с получением размолотой руды; !осуществление процесса флотации указанной размолотой руды; ! где усиливающий действие модификаторов агент, представляющий собой однозарядный ион, и, по меньшей мере, один модификатор пенной фазы добавляют, по меньшей мере, к указанной дробленой руде, указанной размолотой руде или их сочетанию, и где указанный модификатор пенной фазы представляет собой полимер, в котором имеется, по меньшей мере, одна функциональная группа, подбираемая из группы, в которую входят карбоксильные группы или группы, преобразующиеся в карбоксильные в результате ...

Способ флотации руд черных металлов

BRENNSTOFFKOMPOSITION AUS KOHLE UND DISPERGIERUNGSMITTEL

VERFAHREN ZUM DRÜCKEN NICHTSULFIDISCHER SILIKATISCHER GANGARTEN

Dewatering of slurries and particularly of sewage sludge

Aqueous slurries of flocculated or agglomerated amorphous organic solids such as sewage sludges are treated to facilitate mechanical dewatering by treatment with at least one anionic polymer and at least one cationic polymer added successively in optional order, the polymers being organic, water-soluble, and of sufficiently high molecular weight to avoid redispersing the flocculated or agglomerated solids in the slurry. The polymer added first should have an ionic charge corresponding to the prevailing or net charge of the organic solids in the slurry. The cationic polymer is generally an amine or quaternary ammonium salt and the anionic polymer generally has a plurality of sulphonate or carboxylic groups. A large number of suitable polymers are exemplified.

ADDITIVE COMPOSITIONS FOR RECOVERING COAL FINES BY FROTH FLOTATION

FLOTATION OF FLUORIDE ORES

... 1,220,556. Froth flotation. MONTECATINI EDISON S.p.A. 8 Jan., 1970 [9 Jan., 1969], No. 917/70. Heading B2H. In a process for the flotation of calcium fluoride a flotation slurry containing calcium fluoride is conditioned with a polyethylenoxy alkylpahenol as a depressant and a polyethylenoxy ester of a fatty acid as an activator. The muddy deslimed or slimy raw mineral is pulped in water to form a slurry which is then conditioned with the alkylphenol and the fatty acid ester. The following flotation reactants can be added to the conditioned slurry: an unsaturated fatty acid, e.g. oleicacid, as a collector for the fluoride; a starch, e.g. dextrin, as a depressant for silica; sodium fluoride as an activator (this may be totally or partially substituted by the fatty acid ester); and a tannin, e.g. as in quebracho extract, as a depressant for calcite. Air is then blown in and the mass is floated in a number of steps. Examples are given.

FROTH FLOTATION OF FINE PARTICLES

Improvements in and relating to ores

In a process for concentrating slime-producing ores, ores of uranium, vanadium or manganese by froth flotation, a flocculating agent, e.g. starches, glues, certain polysaccharides and high molecular weight (i.e. in excess of 200,000) polyacrylamides, is added to the flotation mixture to flocculate the slimes during flotation treatment, the floc being recovered from the froth as concentrate. The ore is first made into a pulp with water and the flocculating agent and any desired activators, promoters or pH adjusters are added before flotation treatment, although in some cases one or even all of the last three reagents may be dispensed with. Examples, with ore concentrations obtained from a Fagergren flotation machine, are given in the Specification and contain specific examples of flocculating agents, activators, promoters, and pH adjusters which may be used.

ADDITIVE COMPOSITIONS FOR RECOVERING COAL FINES BY FROTH FLOTATION

RECOVERING COAL FINES

Novel cationic ester compounds, novel polymers and copolymers thereof, their preparation and use

... 1,140,520. Cationic ester compounds containing a quaternary nitrogen atom. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 19 July, 1966, No. 32402/66. Heading C2C. [Also in Divisions B2, C3, C6 and D2] The invention comprises cationic ester compounds of the general formula wherein R is C 1 -C 20 alkyl, R1 is an aliphatic hydrocarbon group having from 2 to 7 carbon atoms and 1 or 2 ethylenic linkages, X is Cl or Br and n is 1 or 2 with the proviso that if n is 2 R1 has not more than 4 carbon atoms. They may be obtained by reacting the corresponding glycidyl trialkyl ammonium halide with the corresponding unsaturated mono- or di-carboxylic acid in the liquid phase. The liquid phase may be water which may contain other solvents, e.g. C 1 -C 4 alcohols. The reaction is preferably effected at between 45‹ C. and 140‹ C. The R groups are preferably C 1 -C 4 alkyl groups. In an alternative procedure the compounds are obtained by directly reacting the corresponding trialkylamine ...

Flotation reagents and flotation processes utilizing same

Method for floating

Floatation reagents and floatation processes utilizing same.

Improving the seperation of diamond from gangue minerals

Flotation reagents and flotation processes utilizing same

Hardwood lignosulfonates for seperating gangue materials from metallic sulphide ores

Improving the seperation of diamond from gangue mineral

Hardwood lignosulfonates for seperating gangue materials from metallic sulphide ores

FROTHERS FOR MINERAL FLOTATION

COLLECTORS FOR MINERAL FLOTATION

Floatation reagents and floatation processes utilizing same.

Method for floating

Flotation reagents and flotation processes utilizing same

Hardwood lignosulfonates for seperating gangue materials from metallic sulphide ores

Method for floating

Sélective flocculation for the recovery of phosphate.

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

Quaternary ammonium compounds for froth floltationof silicates from an iron ore.

Process and products for the flotation of minerals and ores with calcareous and dolomitic gangue, such as oxidized ores, of copper in particular.

Process of ore flotation using like depressing a copolymer or a terpolymère of low molecular mass.

Method of depressing non-sulfide silicate gangue minerals

Novell polymeric sulfide mineral removing pressure from

Improving the seperation of diamond from gangue mineral

COLLECTORS FOR MINERAL FLOTATION

FROTHERS FOR MINERAL FLOTATION

Hardwood lignosulfonates for seperating gangue materials from metallic sulphide ores

Flotation reagents and flotation processes utilizing same

FROTHERS FOR MINERAL FLOTATION

Improving the seperation of diamond from gangue mineral

COLLECTORS FOR MINERAL FLOTATION

Floatation reagents and floatation processes utilizing same.

PROCEDURE FOR THE IMPROVEMENT OF THE DRAINAGE OF FINE PARTICLES

PROCEDURE FOR PRESSING NICHTSULFIDI SILIKATI PACES

BENEFICIATION OF COAL BY CHEMICAL GRAFTING AND FLOTATION

Open-network foam of hydrophobic material for selective separation of mineral particles

An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The three-dimensional surface structure is made of a hydrophobic material which is a reaction product of isocyanate and polyol promotes the attraction of mineral particles to the collection surfaces as a hydrophobic foam. The hydrophobic foam can be in the form of a cube, sphere, or sheet and can be used in a filter or conveyor belt in a processor.

Selective polysaccharide agents and flocculants for mineral ore beneficiation

Selective polysaccharide agents or flocculants comprise one or more types of polysaccharides comprising one or more types of pentosan units. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue and/or other minerals, wherein the process comprises treating the ore in an aqueous medium with one or more selective polysaccharide agents or flocculants comprising one or more types of polysaccharides comprising one or more types of pentosan units.

FROTH FLOATATION OF COAL WITH PRETREATED WATER

Amine-aldehyde resins and uses thereof in separation processes

Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants in the separation of bitumen from sand and/or clay or in the beneficiation of clay (., kaolin clay) from an impure clay-containing ore. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water.

Hardwood lignosulfonates for separating gangue materials from metallic sulfide ores

Modified amine-aldehyde resins and uses thereof in separation processes

Methods of enhancing fine particle dewatering

FROTH FLOTATION

FLOCCULATING AGENTS

A method for improving selectivity and recovery in the flotation of nickel sulphide ores that contain pyrhotite by exploiting the synergy of multiple depressants

A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the valuable sulphide minerals in the flotation of non-ferrous metal sulphides, while reducing or eliminating the use of environmentally problematic chemicals such as polyamines. The method has significant economic and environmental benefits. The multiple depressants comprise at least one organic polymer, at least one sulphur-containing compound and/or at least one nitrogen-containing organic compound.

CONDITIONING AGENTS FOR METAL SULPHIDE FLOTATION

Method of depressing non-sulfide silicate gangue minerals

Novel polymeric sulfide mineral depressants

FROTH FLOTATION DEPRESSANTS

SEPARATION OF POLYMETALLIC SULPHIDES BY FROTH FLOTATION

HEMICELLULOSE AS TALC DEPRESSANT

Quaternary ammonium compounds for froth flotation of silicates from an iron ore

FOAMING SURFACTANT COMPOSITIONS

HARDWOOD LIGNOSULFONATES FOR SEPARATING GANGUE MATERIALS FROM METALLIC SULFIDE ORES

Disclosed are compositions and methods for separating gangue material from metallic sulfide ores. The compositions typically include a lignosulfonate and do not include a cyanide salt. Suitable lignosulfonates may include lignosulfonates, for example hardwood lignosulfonate having a weight average molecular weight of about 3 kDa to about 12 kDa and having a relatively low sulfur content and a relatively low sulfonate content.

RESINOUS POLYMERIC SUBSTANCES

A resinous polymeric substance for use as an aid in froth flotation characterized by its mean molecular weight, elemental analysis, viscosity and infra-red spectrum, A method of making the substance by reacting a carbonyl compound with an amine or ammonia followed by heating: and a method of froth flotation in which the substance is used as an aid The substance has a mean molecular weight in the range 250 - 10 000: it includes carbon, hydrogen, nitrogen and oxygen; it has a viscosity of 10 000 to 100 000 centipoise at 20.degree.C and 100 to 1 000 centipoise at 70.degree.C; and it has an infra-red spectrum including bands characteristic of the groups -C-N-, >N-H and >C=C<.

FLOTATION OF NON-SULPHIDE COPPER ORES

METHOD FOR THE DEPRESSING OF HYDRATED SILICATES

... 61109-7703 The invention provides a method for the beneficiation of value minerals from ores with selective rejection of hydrous, layered silicates which comprises. a) providing an aqueous pulp slurry of finely-divided, liberated ore particles; b) conditioning said pulp slurry with an effective amount of hemicellulose, a mineral collector and a frothing agent, respectively, and c) collecting the value mineral by froth flotation.

DESLIMING OF POTASH ORES

POLYMER COLLECTORS FOR COAL FLOTATION

METHODS OF PREPARING HEMICELLULOSE COMPOSITIONS

Multi-extraction methods for preparing hemicellulose compositions are provided. Depressant compositions comprising hemicellulose compositions are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising hemicellulose.

PROCESS TO TREAT PHOSPHATE ORES

The present invention relates to a process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector,wherein the primary collector is selected from the group of amphoteric and anionic surface active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2, to collector compositions suitable for use in the above process,and to pulp comprising such collector compositions.

MINERAL BENEFICIATION UTILIZING ENGINEERED MATERIALS FOR MINERAL SEPARATION AND COARSE PARTICLE RECOVERY

A selective recirculation circuit has a loading stage, a stripping stage and a filtering stage for use in processing a feed stream or slurry containing mineral particles. The stripping stage forms a first loop with the loading stage, and a second loop with the filtering stage. The loading stage has a loading mixer and a loading washing screen. The stripping stage has a stripping mixer and a stripping washing screen. The loading mixer receives the slurry and causes barren media in the circuit to contact with the slurry so that the mineral particles in the slurry are loaded onto the barren media. The media is directed to the stripping stage where the mineral particles are removed from the media. The barren media is recycled to the loading stage. The stripping solution recovered from the filtering stage is returned to the stripping stage and the mineral particles are discharged as concentrate.

UTILIZING ENGINEERED MEDIA FOR RECOVERY OF MINERALS IN TAILINGS STREAM AT THE END OF A FLOTATION SEPARATION PROCESS

Apparatus uses engineered collection media to recover mineral particles in a mineral extraction process, e.g., for processing a tailings stream at the end of a flotation separation process. The engineered collection media are added to slurry/tailings containing the mineral particles. The engineered collection media have collection surfaces coated with a chemical selected for attracting the mineral particles to the collection surfaces so the engineered collection media becomes mineral laden media in the slurry/tailings in a loading stage. The apparatus include three stages: removing unwanted material from mineral laden media; using a stripping agent to strip the mineral particles from the mineral laden media; and separating the engineered collection media from the mineral particles and the stripping agent. The stripping agent is reused for stripping, and the engineered collection media are returned to the loading stage. The engineered collection media can have a smooth or foam-like surface ...

POLYMER COATING FOR SELECTIVE SEPARATION OF HYDROPHOBIC PARTICLES IN AQUEOUS SLURRY

A substrate for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The polymeric coating can be modified with tackifiers; plasticizers; crosslinking agents; chain transfer agents; chain extenders; adhesion promoters; aryl or alky copolymers; fluorinated copolymers and/or additives; hydrophobicizing agents such as hexamethyldisilazane; inorganic particles such as silica, hydrophobic silica, and/or fumed hydrophobic silica; MQ resin; and / or other additives to control and modify the properties of the polymer.

METHOD FOR TREATING OIL SANDS EXTRACTION PLANT TAILINGS

FATTY ACID BY-PRODUCTS AND METHODS OF USING SAME

AZETIDINIUM-FUNCTIONAL POLYSACCHARIDES AND USES THEREOF

The present invention relates to polysaccharides that have been modified by-providing azetidinium functionality thereto. Such functionality can be provided by crosslinking a polysaccharide with a resin having azetidinium functional groups. In one or more aspects, the polysaccharide can comprise one or more of starch, guar gum, alginate or derivatives thereof. Polysaccharides having azetidinium functionality according to the present invention are suitable for multiple uses. Such uses include, but are not limited to, removal of one or more solid materials from a liquid, benef iciation of an ore,- removal of metallic ions from a liquid; providing oil from bitumen; and removal of mercury from synthetic gypsum. Other uses of the functionalized polysaccharides of the present invention include hydroseeding, dust control and corosion control.

FOAMING AGENT AND METHOD FOR FLOATATION OF INSOLUBLE COMPONENTS OF RAW SALTS

The invention relates to a method for separating insoluble components from sylvinite, wherein the sylvinite is suspended in a saturated salt brine, a coagulating agent is added to the suspension, and a foaming agent is then added to the composition thus obtained, said foaming agent comprising and ether and/or ester, wherein a) the ethers of formula 1 correspond to R-O-R' (1), where R is a linear or branched alkyl or alkenyl groups having 2 to 30 carbon atoms and R' is a linear or branched alkyl or alkenyl groups having 1 to 30 carbon atoms; b) the esters are derived from monovalent or multivalent alcohols having 1 to 30 carbon atoms (alcohol radicals); or c) the ethers and/or esters are cyclic, wherein the ring size is 6 to 30 carbon atoms.

A METHOD FOR IMPROVING RHEOLOGICAL PROPERTIES OF MINERAL SLURRY

The invention provides methods for improving rheological properties of a mineral slurry by adding a copolymeric dispersing agent to the slurry to disperse silicate minerals. The mineral slurry includes nickel sulfides and silicate minerals. Also provided are methods for separating nickel minerals from serpentinite-containing gangue by grinding ore and adding water to form a mineral slurry, adding a copolymeric dispersing agent to the slurry, aerating the slurry to form a froth and a nickel mineral concentrate, and separating the froth from the nickel mineral concentrate. The copolymeric dispersing agent is a copolymer of acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid, a copolymer of acrylic acid and hydroxyethyl methacrylate, a copolymer of acrylic acid and methacrylic acid; or a copolymer of ethylene glycol methacrylate phosphate and hydroxyethyl methacrylate.

QUATERNARY AMMONIUM COMPOUNDS AND THEIR USE AS COLLECTORS IN FROTH FLOTATION PROCESSES

The present invention relates to the use of a polymeric quaternary ester product as a collector in a froth flotation process, to a method for froth flotation utilizing the polymeric quaternary ester, to the polymeric quaternary ester as such, and to methods for the production of the polymeric quaternary ester.

FLOTATION SEPARATION USING LIGHTWEIGHT SYNTHETIC BEADS OR BUBBLES

Apparatus, such as a flotation separation device, features a flotation cell or column configured to receive a mixture of water, valuable material and unwanted material; receive polymer-based materials, including polymer bubbles or beads, configured to attach to the valuable material in the mixture; and provide enriched polymer-based materials, including enriched polymer bubbles or beads, having the valuable material attached thereon.

FLOCCULANTS AND METHODS FOR RECOVERING BITUMEN FROM OIL SANDS

A flocculant, according to embodiments of the present disclosure, includes a core nanoparticle and at least one positively charged functional group on a surface of the core nanoparticle. The nanoparticle may comprise a silica, alumina, titania, iron oxide, iron nitride, iron carbide, or a carbon-based nanoparticle. The flocculant may be used, in a method of bitumen recovery, to neutralize and agglomerate bitumen droplets and/or mineral particles derived from oil sands ore. The bitumen droplets agglomerate about the core nanoparticle of the flocculant to form bitumen flocs, while the mineral particles agglomerate about the core nanoparticle of the flocculant to form mineral flocs. The buoyant bitumen flocs may then separate from the dense mineral flocs to enable high-yield recovery of bitumen from oil sands.

FLOCCULANTS AND METHODS FOR RECOVERING BITUMEN FROM OIL SANDS

A flocculant, according to embodiments of the present disclosure, includes a core nanoparticle and at least one positively charged functional group on a surface of the core nanoparticle. The nanoparticle may comprise a silica, alumina, titania, iron oxide, iron nitride, iron carbide, or a carbon-based nanoparticle. The flocculant may be used, in a method of bitumen recovery, to neutralize and agglomerate bitumen droplets and/or mineral particles derived from oil sands ore. The bitumen droplets agglomerate about the core nanoparticle of the flocculant to form bitumen flocs, while the mineral particles agglomerate about the core nanoparticle of the flocculant to form mineral flocs. The buoyant bitumen flocs may then separate from the dense mineral flocs to enable high-yield recovery of bitumen from oil sands.

USE OF MODIFIED SUGAR CANE BAGASSE AS DEPRESSOR IN IRON ORE FLOTATION

The patent application describes a depressor in iron ore flotation that comprises sugar cane bagasse treated with caustic soda so as to assist in the iron ore flotation and a process of preparing that depressor. The invention refers to the use of sugar cane bagasse treated with caustic soda as a depressor in iron ore flotation. The use of this depressor shows adequate performance for the function it serves.

DEPRESSANTS FOR MINERAL ORE FLOTATION

Depressants comprising one or more types of polysaccharides comprising one or more types of pentosan units are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more of the depressants.

SEPARATION OF NORMALLY HYDROPHOBIC PLASTIC MATERIALS BY FROTH FLOTATION

METHOD OF DEPRESSING NON-SULFIDE SILICATE GANGUE MINERALS

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

NOVEL POLYMERIC SULFIDE MINERAL DEPRESSANTS

Novel depressants for depressing sulfide minerals during froth flotation of ores to recover value minerals are disclosed, as well as a method for their use in the froth flotation. The novel depressants are terpolymers of a (meth)acrylamide, an allyl thiourea and a hydroxyalkyl (meth)acrylate.

Verfahren zur Behandlung von wässrigen Schlämmen von ausgeflockten oder agglomerierten amorphen organischen Feststoffen

Uniformly pre-coating a filter screen with a mixture of

Uniformly pre-coating a filter screen with a mixture of finely divided anion and cation exchange resins The resin particles having a size in the range 60 - 400 mesh are slurried in water and a water-soluble, resinous polyelectrolyte is added to the slurry in an amount to prevent the resin particles from having a volume increase (over the volume of the particles in the dry state) of more than 550% whilst permitting a volume increase of more than 100%. The slurry is then passed through a filter screen to deposit the ion exchange resin particles on the screen. The polyelectrolyte prevents the excessive clumping which occurs in the mixt. of ion exchange resin particles and gives a precoat layer of uniform thickness on the filter screen.

Verfahren zur Erleichterung der Abtrennung von hochdispergierten organischen Feststoffen aus ihren wässrigen Suspensionen

STABILIZED KOHLENBRUEHE AND PROCEDURE FOR THEIR PRODUCTION.

NON-FLOTATION BASED RECOVERY OF MINERAL BEARING ORE USING HYDROPHOBIC PARTICLE COLLECTION IN A PIPELINE SECTION

Apparatus uses hydrophobic synthetic beads to recover mineral particles in a slurry. The synthetic beads and the slurry are mixed into a mixture for processing. The apparatus has an interaction vessel installed in a section of pipeline. The interaction vessel is made from a pipeline folded or coiled into a compact struction having a continuous flow path. The interaction vessel has an input to receive the mixture of slurry and synthetic beads. The folded or coiled structure is used to increase the residence time of the mixture in the flow path, allowing more time for the mineral particles in the slurry to attach to the surface of the synthetic bead, while maintaining a small footprint. The interaction vessel may be formed from a number of loops of pipe section. The interaction vessel may be formed from one or more folded structures. 117-. (canceled)18. A method comprising:receiving in a fluid conduit a mixture comprising a slurry and a plurality of hydrophobic synthetic beads, the slurry comprising mineral particles;arranging at least a part of the fluid conduit into a compact coiled and folded structure having a continuous fluid path;allowing the mineral particles to attach to the hydrophobic synthetic beads at least in the compact structure to form enriched synthetic beads in the fluid path; anddischarging from the compact coiled or folded structure the enriched synthetic beads.19. The method according to claim 18 , wherein the method comprises configuring the compact coiled and folded structure with a plurality of loops interconnected to provide the continuous fluid path.20. The method according to claim 18 , wherein the compact coiled and folded structure comprises a plurality of pipe segments interconnected to form a folded structure to provide the continuous fluid path.21. A method comprising:providing a plurality of synthetic beads;arranging a fluid conduit to receive a mixture of slurry to be mixed with the plurality of synthetic beads, the slurry having ...

Cold water collector saponification method

A cold water saponification method is disclosed. The method is for preferred use in industrial applications such as mining operations wherein saponification of fatty acids is required. Broadly, the method comprises the steps of filling a tank with a solution comprising water, a base and fatty acids, installing a mixer capable of creating a vortex in order to effectively saponify fatty acid particles. The use of a high-shear mixer installed vertically has been proven successful in saponifying fatty acids in cold water.

Mineral Ore Flotation Using Carboxymethyl Cellulose With Different Characteristics In Different Flotation Cells

A flotation method for mineral processing is disclosed. The method for floating includes a first step of using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step includes using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics. The first flotation cell may be used in at least one rougher stage and/or at least one rougher-scavenger stage of the flotation method, and the subsequent flotation cell may be used in at least one cleaner stage, and/or at least one cleaner scavenger stage, and/or at least one recleaner stage of the flotation method. A product may be obtained, directly or indirectly, by such a method. A mineral processing plant may use at least two CMCs of different characteristics in flotation for mineral processing. 1. A method for floating ,wherein a first step comprises using a first carboxymethyl cellulose (CMC) in a first flotation cell, anda subsequent step comprises using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics.2. The method of claim 1 , wherein the first CMC has a degree of substitution (DS) that is different from a DS of the second CMC.3. The method of claim 2 , wherein the DS of the first CMC is lower than the DS of the second CMC.4. The method of claim 1 , wherein the first flotation cell is comprised in at least one rougher stage and/or at least one rougher-scavenger stage of the flotation method claim 1 , and the subsequent flotation cell is comprised in at least one cleaner stage claim 1 , and/or at least one cleaner scavenger stage claim 1 , and/or at least one recleaner stage of the flotation method.5. The method of claim 2 , wherein the difference in DS is at least 0.4.6. The method of claim 2 , wherein the DS of the first CMC is in the range of 0.4-0.9 and the DS of the second CMC is in the range of 0.8-1.5.7. The method of claim 2 , wherein the DS of the first CMC is about 0.44 or 0.53 ...

Processes for Mineral Ore Flotation in the Presence of Multivalent Metal Ions

Processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, are provided, wherein the process comprises carrying out a flotation process in the presence of one or more chelating agents, one or more collecting agents, one or more types of multivalent metal ions, and optionally, one or more depressants, in a solution, wherein the one or more chelating agents are capable, alone or as a group of compounds, of sequestering a metal or metal ion in the form of a metal-chelating agent complex that remains at least partially soluble in the solution.

ENVIRONMENTALLY-FRIENDLY COMPOSITIONS AND METHODS FOR EXTRACTING MINERALS AND METALS FROM ORE

The subject invention provides safe, environmentally-friendly, compositions and methods for extracting minerals and/or metals from ore. More specifically, the subject invention provides for bioleaching using a composition comprising one or more biosurfactant-producing microorganisms and/or microbial growth by-products. In specific embodiments, the composition comprises biosurfactant-producing yeasts and/or their growth by-products. 1. A decadmiation composition comprising a sophorolipid biosurfactant , an acid and , optionally , a pH adjuster , wherein the sophorolipid is a linear sophorolipid or a derivative of a linear sophorolipid; and wherein the acid is selected from acetic acid , citric acid , lactic acid , butyric acid , sorbic acid , benzoic acid , formic acid , fumaric acid , propionic acid , ascorbic acid , glyoxylic acid , malonic acid , pyruvic acid , oxalic acid , uric acid , malic acid , tartaric acid , sulfuric acid , nitric acid , phosphoric acid , hydrochloric acid , boric acid and analogs thereof2. The decadmiation composition of claim 1 , wherein the pH adjuster is present in the composition at a concentration that stabilizes the pH of the composition between 2-5.3. A method for extracting an impurity from phosphate ore claim 1 , the method comprising:(i) obtaining the phosphate ore, said ore comprising phosphate and an impurity;(ii) contacting a composition comprising a sophorolipid biosurfactant, an acid, and, optionally, a pH adjuster, with the ore for a period of time to yield a mixture comprising a treated phosphate ore and an impurity that has reacted with the composition; and(iii) separating the reacted impurity and composition from the mixture to obtain a reduced-impurity phosphate-containing material.4. The method of claim 3 , wherein the acid is selected from acetic acid claim 3 , citric acid claim 3 , lactic acid claim 3 , butyric acid claim 3 , sorbic acid claim 3 , benzoic acid claim 3 , formic acid claim 3 , fumaric acid claim 3 , ...

USE OF ALKOXYLATED AMINES AS COLLECTOR AGENTS FOR ORE BENEFICIATION

Provided is a method of beneficiating an ore including contacting an ore with a compound represented by formula (1): 115.-: (canceled)18. The method of claim 17 , wherein:{'sup': '1', 'RCO is a saturated or unsaturated, linear or branched acyl group containing 12-24 carbon atoms;'}{'sup': '2', 'sub': 2', 'z, 'Ris an alkylene radical represented by the formula —(CH)—, wherein z is an integer from 1 to 20;'}{'sup': '4', 'Ris a hydrocarbyl group containing 8-24 carbon atoms; and'}{'sup': '5', 'claim-ref': {'@idref': 'CLM-00017', 'claim 17'}, 'AO, n, p, t, Rand X are as defined in .'}19. The method of claim 16 , wherein:each t is 1; and{'sup': '5', 'Ris a methyl or ethyl group.'}20. The method of claim 16 , wherein:each n is, independently from one another, 1 to 6; andp is from 1 to 10.21. The method of claim 16 , wherein the ore is selected from the group consisting of calcium carbonates claim 16 , magnesium carbonates claim 16 , phosphates claim 16 , iron ores claim 16 , and mixtures thereof.22. The method of claim 16 , wherein the ore is selected from the group consisting of calcium carbonates claim 16 , calcium carbonate-containing materials claim 16 , and mixtures thereof.23. The method of claim 16 , wherein the ore is wollastonite claim 16 , barite claim 16 , titanium oxides claim 16 , kaolin claim 16 , kaolinitic clays claim 16 , calcined kaolinitic clays claim 16 , montmorillonite claim 16 , sepiolite claim 16 , talc claim 16 , diatomaceous earths claim 16 , aluminium oxides claim 16 , aluminium oxides containing other elements claim 16 , or other oxides claim 16 , sulfates and sulfides claim 16 , including mixtures thereof.24. The method of claim 16 , wherein the ore is selected from the group consisting of potassium chloride claim 16 , metal-containing ores claim 16 , and mixtures thereof claim 16 , wherein the metal is selected from the group consisting of iron claim 16 , platinum claim 16 , aluminium claim 16 , nickel claim 16 , copper claim 16 , and ...

SULFONATED MODIFIERS FOR FROTH FLOTATION

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like. 1. A sparge composition comprising:(i) a medium;(ii) a metal oxide ore comprising a gangue and a beneficiary;(iii) an amine collector; and(iv) a modifier comprising one or more sulfonated polymers,wherein the beneficiary comprises an iron oxide.2. The sparge composition of claim 1 , wherein the gangue comprises silicate claim 1 , silica claim 1 , carbonate claim 1 , or a combination thereof.3. The sparge composition of claim 1 , wherein the modifier comprises a sulfonated natural polymer claim 1 , a sulfonated synthetic polymer claim 1 , or a combination thereof.4. The sparge composition of claim 1 , wherein the modifier comprises a sulfonated lignin claim 1 , a sulfonated starch claim 1 , a sulfonated cellulose claim 1 , a sulfonated guar gum claim 1 , a sulfonated xanthan gum claim 1 , or any combination thereof.5. The sparge composition of claim 1 , wherein at least one of the one or more sulfonated polymers has a weight average molecular weight of from about 300 g/mole to about 100 claim 1 ,000 g/mole and comprises a residue of sulfonated vinyl alcohol claim 1 , sulfonated acrylamide claim 1 , sulfomethylated acrylamide claim 1 , 2-acrylamido-2-methylpropane sulfonate claim 1 , styrene sulfonate claim 1 , or any combination thereof.6. The sparge composition of claim 5 , wherein the at least one of the one or more sulfonated polymers further comprises a residue of acrylic acid claim 5 , methacrylic acid claim 5 , acrylamide claim 5 , vinyl ...

Sulfonated modifiers for froth flotation

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of phosphate beneficiary from ores comprising phosphates, dolomite, calcite, clay, silica, silicates, carbonates, and mixtures thereof.

Depressants for Mineral Ore Flotation

Depressants comprising a polymer comprising: a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate, allyloxyalkyldiol, allyloxyethanol, trimethylolpropane allyl ether, and 2-hydroxy ethyl acrylate; and optionally, c) recurring units of one or more acrylic acid monomers are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants. 1. A depressant comprising a polymer comprising a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate , allyloxyalkyldiol , allyloxyethanol , trimethylolpropane allyl ether , and 2-hydroxy ethyl acrylate; and optionally , c) recurring units of one or more acrylic acid monomers.2. The depressant of claim 1 , wherein the polymer comprises recurring units of one or more hydroxyalkyl alkylacrylate monomers.3. The depressant of claim 1 , wherein the recurring units in the polymer comprise about 70% to about 95% of the one or more acrylamide monomers and about 5% to about 30% of the one or more monomers selected from hydroxyalkyl alkylacrylate claim 1 , allyloxyalkyldiol claim 1 , allyloxyethanol claim 1 , trimethylolpropane allyl ether claim 1 , and 2-hydroxy ethyl acrylate.4. The depressant of claim 2 , wherein the one or more hydroxyalkyl alkylacrylate monomers comprises a hydroxyalkyl moiety and an alkylacrylate moiety.5. The depressant of claim 4 , wherein the alkyl of the hydroxyalkyl moiety is selected from a Clinear or branched alkyl and wherein the alkyl of the alkylacrylate moiety is selected from a Clinear or branched alkyl.6. The depressant of claim 2 , wherein the one or more hydroxyalkyl alkylacrylate monomers comprises hydroxyethyl methylacrylate.7. The depressant of claim 1 , wherein ...

CATIONIC FLOTATION OF SILICA AND APATITE FROM OXIDIZED IRON ORES AT NATURAL PH

A process to beneficiate oxidized iron ore can include the steps of: (1) adding a polysaccharide to the oxidized iron ore; (2) adding at least one amine; and (3) adding at least one salt; wherein the pH of the process is below 10 and greater than 5. 1. A process to beneficiate oxidized iron ore comprising the steps of:adding a polysaccharide to the oxidized iron ore;adding at least one amine; andadding at least one salt;wherein the pH of the process is below 10 and greater than 5.2. The process of wherein the polysaccharide comprises:{'sub': 6', '10', '5', 'n, 'polysaccharide carbohydrates (CHO)consisting of a number of glucose monosaccharide units joined together by glycosidic bonds; and wherein'}n ranges from 2 to 1,000 inclusive.3. The process of whereinthe polysaccharide is a causticized starch.4. The process of whereinthe at least one amine is an alkyl amines having between 2-20 carbons.5. The process of whereinthe at least one amine is dodecyl amine.6. The process of whereinthe at least one amine is an aromatic amine having between 6-40 carbon atoms.7. The process of whereinthe at least one amine is a cycloaliphatic amine.8. The process of whereinsaid at least one salt comprises a cation selected from the group consisting of magnesium, calcium and sodium.9. The process of whereinsaid at least one salt comprises a divalent cation.10. The process of whereinsaid at least one divalent cation is selected from the group consisting of magnesium and calcium.11. The process of whereinsaid pH is between 6 to 9 inclusive.12. The process of whereinsaid step of adding at least one amine comprises adding at least one amine in two or more stages.13. The process of whereinsaid step of adding at least one amine comprises adding at least one amine in three or more stages.14. The process of whereinsaid step of adding at least one amine comprises adding at least one amine in four or more stages.15. The process of claim 14 , whereinsaid step of adding at least one amine comprises ...

Agglomerated Hemicellulose Compositions, Methods of Preparation Thereof, and Processes for Enriching a Desired Mineral from an Ore

Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition. 1. An agglomerated hemicellulose composition comprising agglomerates , wherein at least about 50% of the agglomerates are retained on a 20 mesh sieve , at least about 90% of the agglomerates are retained on a 100 mesh sieve , and the size of the agglomerates ranges from about 0.1 to about 15 mm.2. The agglomerated hemicellulose composition of claim 1 , wherein the agglomerated hemicellulose composition is prepared by a method comprising:(a) providing new or undigested plant material comprising hemicellulose;(b) combining new or undigested plant material comprising hemicellulose with a granulation fluid comprising a solvent, a caustic agent, and optionally an oxidizing agent and/or sequestering agent; and(c) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to form an agglomerated hemicellulose composition comprising agglomerates; wherein step (b) occurs before or simultaneously with step (c).3. The agglomerated hemicellulose composition of claim 2 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.4. A method for preparing an agglomerated hemicellulose composition or a depressant composition claim 2 , comprising:(a) providing new or undigested plant material comprising hemicellulose;(b) combining new or ...

Collectors for mineral flotation

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a collector. The improvement allows for low dosages of collector to work as well as much greater amounts of non-microemulsified collector.

FROTHERS FOR MINERAL FLOTATION

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a frother. The improvement allows for low dosages of frother to work as well as much greater amounts of non-microemulsified frother. 1. A method of enhancing the performance of a frother in a froth flotation separation of slurry in a medium , the method comprising the steps of:making a stable frother microemulsion,blending the microemulsion, the medium, fines, and optionally other additives, andremoving concentrate from the slurry by sparging the slurry.2. The method of in which the microemulsion improves the efficiency of froth separation process.3. The method of in which more concentrate is removed than if a greater amount of frother had been used in a non-microemulsion form.4. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl hexanol claim 1 , 1-15% C8-C10 fatty acids claim 1 , 1-30% 2-butoxy ethanol claim 1 , 1-20% propylene glycol claim 1 , and 1-10% potassium hydroxide.5. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl hexanol claim 1 , 1-20% C8-C10 fatty acids claim 1 , 1-30% 2-butoxy ethanol claim 1 , and 1-10% potassium hydroxide.6. The method of in which the microemulsion comprises a continuous phase which is water and a dispersed phase claim 1 , the microemulsion as a whole by weight is made up of: 1-99% water claim 1 , blended with: 1-50% of an alcohol blend which is from the waste stream of the production of 2-ethyl ...

COMPOSITIONS AND METHODS FOR SELECTIVE SEPARATION OF MINERALS FROM SULFIDE ORES

Compositions including blends of one or more acrylamide/allyl thiourea polymer as a first depressant, and one or more carboxyalkyl dithiocarbamate compound as a second depressant, and their use as depressants in the beneficiation of sulfide minerals from ores and/or concentrates are disclosed herein, along with methods for selectively separating value sulfide minerals from non-value sulfide minerals in a froth flotation process for the recovery of such value minerals. 2. A composition according to claim 1 , wherein the first depressant and the second depressant are present at a weight ratio in a range from 20:80 to 80:20.3. A composition according to claim 2 , wherein the weight ratio of the first depressant to the second depressant is from 25:75 to 50:50.4. A composition according to claim 1 , wherein said blend of the first and second depressant is from 10 to 50 parts by weight claim 1 , per 100 parts by weight of water claim 1 , and having 4 Подробнее

MODERATELY OXIDIZED POLYSACCHARIDE DEPRESSANTS FOR USE IN IRON ORE FLOTATION PROCESSES

Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants. 1. A depressant comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7 , about 0.05 to about 5 mmol of anionic charge per gram at a pH of about 7 to about 8 , about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2 , or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10.5.2. The depressant of claim 1 , wherein the moderately oxidized polysaccharide has about 0.06 to about 0.11 mmol of anionic charge per gram at a pH of about 6 to about 7 claim 1 , or about 0.23 to about 0.36 mmol of anionic charge per gram at a pH of about 10 to about 11.2.3. The depressant of claim 1 , wherein the moderately oxidized polysaccharide is moderately oxidized starch.4. A depressant comprising a moderately oxidized polysaccharide prepared by heating a mixture of a polysaccharide claim 1 , one or more bases and one or more oxidizing agents in water.5. The depressant of claim 4 , wherein the polysaccharide is starch.6. The depressant of claim 4 , wherein the heating step is carried out at a temperature in the range of about 20° C. to about 100° C.7. The depressant of claim 4 , wherein the heating step is carried out for about 15 min to about 6 hours.8. The depressant of claim 4 , wherein the amount of water used in the treatment is the amount of water necessary to prepare a corn starch solution with a concentration of about 0.5% to about 50% by weight.9. The depressant of ...

Effluent Treatment System

A dispersion for use with an effluent treatment system, and methods of making and using such a dispersion, whereby the dispersion includes an amount of polymer substantially uniformly dispersed within an aqueous solvent; wherein the dispersion is generated by combining an amount of gas with the amount of polymer and the aqueous solvent, the amount of gas effective to substantially uniformly disperse the amount of polymer within the aqueous solvent. 110-. (canceled)11. A method of making a dispersion for use with an effluent treatment system , said method comprising:combining an amount of gas with an amount of polymer and an aqueous solvent;wherein said amount of gas is effective to substantially uniformly disperse said amount of polymer within said aqueous solvent.12. The method of claim 11 , further comprising providing said amount of polymer in a range of between about 0.1% to about 50% of said dispersion by weight.13. The method of claim 11 , further comprising providing said aqueous solvent as water.14. The method of claim 13 , further comprising providing said gas as air.15. The method of claim 14 , further comprising providing said air as air bubbles.16. The method of claim 15 , further comprising firstly combining said amount of air with said water to provide an entrained air-water mixture; andsubsequently combining said entrained air-water mixture with said amount of polymer.17. The method of claim 15 , wherein said air bubbles generate mixing forces which relatively gently mix said amount of polymer and said water to substantially uniformly disperse said amount of polymer within said water to provide said dispersion.18. The method of claim 17 , further comprising substantially uniformly dispersing said amount of polymer within said water to provide a generally homogenous polymer-water mixture.19. The method of claim 17 , further comprising mixing said amount of polymer and said water by applying forces consisting of said mixing forces generated by said air ...

MINERAL PROCESSING

According to the invention there is provided a method of processing a mixture of minerals including the steps of: 163-. (canceled)64. A method of processing a mixture of minerals including the steps of:(a) providing a mixture of minerals which includes a metal containing mineral and one or more unwanted gangue minerals;(b) achieving a contact between the mixture of minerals and polymeric material that includes a mineral binding moiety which selectively binds to the metal containing mineral; and(c) separating the gangue minerals and the polymeric material which has the metal containing mineral bound thereto.65. A method according to in which the metal containing mineral contains copper.68. A method according to in which the mineral binding moiety is a thionocarbamate claim 67 , thiourea claim 67 , thiol claim 67 , thiocycloalkane claim 67 , thiophosphate or xanthogen formate containing functional group.74. A method according to in which the polymer formed by polymerising the polymeric precursor encapsulates the mineral binding moiety.75. A method according to in which the polymer formed by polymerising the polymeric precursor is a homopolymer.76. A method according to in which the polymer is a copolymer produced by copolymerising the polymeric precursor with one or more other polymeric precursors and/or with a cross-linker.77. A method according to in which the polymeric material includes a methacrylate polymer.78. A method according to in which the polymeric material includes a silane polymer.79. A method according to in which the polymeric material includes a polymeric substrate having a surface which has the mineral binding moiety attached thereto.80. A method according to in which the polymeric material includes polymeric chains which are grafted onto the surface of the polymeric substrate claim 79 , wherein the polymeric chains include the mineral binding moiety.81. A method according to in which the polymeric substrate is an epoxide or a diisocyanate having the ...

AMINE-ALDEHYDE RESINS AND USES THEREOF IN SEPARATION PROCESSES

Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants, for example in the beneficiation of value materials (e.g., bitumen, coal, or kaolin clay) to remove impurities such as sand. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water. 1. A method for beneficiation of an ore , comprising:adding a urea-formaldehyde resin to an aqueous slurry comprising an ore to produce a mixture, wherein the urea-formaldehyde resin has a number average molecular weight of about 400 to about 4,000, and wherein the mixture comprises about 400 grams to about 1,000 grams of the urea-formaldehyde resin per metric ton of the ore;forcing air through the mixture to form a hydrophilic fraction in the mixture; andseparating a product comprising a mineral or metal from the hydrophilic fraction.2. The method of claim 1 , wherein the mineral or metal comprises phosphate claim 1 , potash claim 1 , lime claim 1 , sulfate claim 1 , gypsum claim 1 , iron claim 1 , platinum claim 1 , gold claim 1 , palladium claim 1 , titanium claim 1 , molybdenum claim 1 , copper claim 1 , uranium claim 1 , chromium claim 1 , tungsten claim 1 , manganese claim 1 , magnesium claim 1 , lead claim 1 , zinc claim 1 , clay claim 1 , coal claim 1 , silver claim 1 , graphite claim 1 , nickel claim 1 , bauxite claim 1 , borax claim 1 , or borate.3. The method of claim 1 , wherein the mineral or metal comprises phosphate claim 1 , iron claim 1 , copper claim 1 , or coal.4. The method of claim 1 , wherein the mineral or metal comprises iron.5. The method of claim 1 , wherein the urea-formaldehyde resin has a number average molecular weight of about 400 to about 1 claim 1 ,200 claim 1 , and wherein the mixture comprises about 400 grams to about 600 ...

COLLECTOR COMPOSITION

Presently claimed invention is directed to a collector composition for the beneficiation of a mineral comprising at least one component (A) selected from the group consisting of anionic (A1) surfactants, cationic (A2) surfactants, ampholytic (A3) surfactants and non-ionic surfactants (A4), and at least one component (B) selected from the group consisting of alkoxylated polyalkyleneimine (B1) and alkoxylated hexamethylene diamine (B2). 1. A composition for the beneficiation of a mineral , wherein the composition comprises:A. at least one component (A), andB. at least one component (B),wherein the at least one component (A) is selected from the group consisting of anionic surfactants (A1), cationic surfactants (A2), ampholytic surfactants (A3) and non-ionic surfactants (A4), andthe at least one component (B) comprises a polymer selected from the group consisting of alkoxylated polyalkyleneimine (B1) and alkoxylated hexamethylene diamine (B2).3. The composition according to claim 1 , wherein the anionic surfactants (A1) are selected from the group consisting of fatty acids claim 1 , alkyl sulfates claim 1 , alkyl sulfosuccinates claim 1 , alkyl sulfosuccinamates claim 1 , acyl sarcosides claim 1 , N-acylaminoacids claim 1 , alkyl benzene sulfonates claim 1 , alkyl sulfonates claim 1 , petroleum sulfonates claim 1 , acyl lactylates and salts thereof.4. The composition according to claim 3 , wherein the fatty acid is selected from the group consisting of saturated or unsaturated C-Cfatty acids and mixtures thereof claim 3 , salts of saturated or unsaturated C-Cfatty acids and mixtures thereof claim 3 , and condensation products of saturated or unsaturated C-Cfatty acids and mixtures thereof.5. The composition according to claim 4 , wherein the saturated or unsaturated C-Cfatty acids and mixtures thereof are selected from the group consisting of octanoic acid claim 4 , nonanoic acid claim 4 , decanoic acid claim 4 , undecanoic acid claim 4 , dodecanoic acid claim 4 , ...

SULFONATED MODIFIERS FOR FROTH FLOTATION

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of phosphate beneficiary from ores comprising phosphates, dolomite, calcite, clay, silica, silicates, carbonates, and mixtures thereof. 2. The sparge composition of claim 1 , wherein the gangue comprises a silicate claim 1 , silica claim 1 , a carbonate claim 1 , or any combination thereof.3. The sparge composition of claim 1 , wherein the sparge composition further comprises a sulfonated lignin claim 1 , a sulfonated starch claim 1 , a sulfonated cellulose claim 1 , a sulfonated guar gum claim 1 , a sulfonated xanthan gum claim 1 , or any combination thereof.4. The sparge composition of claim 1 , wherein the sulfonated polymer has a weight average molecular weight of from about 300 g/mole to about 100 claim 1 ,000 g/mole.5. The sparge composition of claim 1 , wherein the sulfonated polymer further comprises a residue of acrylic acid claim 1 , methacrylic acid claim 1 , acrylamide claim 1 , vinyl alcohol claim 1 , maleic acid claim 1 , a maleic acid ester claim 1 , or any combination thereof.6. The sparge composition of claim 1 , wherein the phosphate beneficiary comprises an apatite.7. The sparge composition of claim 1 , the sparge composition further comprising phosphoric acid.8. The sparge composition of claim 1 , the sparge composition further comprising a pH adjusting agent claim 1 , wherein the pH of the sparge composition further comprising the pH adjusting agent is from about 4 to about 7.9. A method of reverse froth flotation comprising: (i) a medium,', '(ii) a phosphate ore comprising a phosphate beneficiary and a ...

The Synthesis of New Anionic Surfactants and Their Use as Collectors in Froth Flotation of Non-Sulphidic Ores

The present invention relates to a compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof, or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof. This compound is useful as a collector in a process for froth flotation of non-sulfidic ores, especially phosphate ores. The invention also relates to a method which comprises the steps of a) conditioning a pulped phosphate ore, wherein the phosphate ore comprises a calcium phosphate mineral or a mixture of such minerals, and gangue minerals, with an effective amount of a calcium phosphate mineral collector reagent, which is the above-mentioned compound, and optionally other flotation aids and b) performing a froth flotation process to recover the calcium phosphate mineral(s). 1. A compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof , or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof.2. A compound according to claim 1 , where the neutral amino acid is selected from the group consisting of glycine claim 1 , alanine claim 1 , sarcosine claim 1 , valine claim 1 , leucine and isoleucine.3. A compound according to where the N-acyl group is a group R—(C═O)— where R is a hydrocarbyl group having from 7 to 23 carbon atoms claim 1 , optionally substituted.4. A compound according to claim 1 , where the monohydroxy monocarboxylic acid is selected from the group consisting of lactic acid and glycolic acid.6. A composition comprising a{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a) compound according to ,'}b) an N-acyl neutral amino acid or a salt thereof, andc) a fatty acid RCOOH, where R is a hydrocarbyl group having from 7 to 23 carbon atoms, optionally substituted, or a salt thereof.7. A composition according to wherein a) is present in an amount of 1-20 mol % claim 6 , b) is present in an amount of 30-60 mol % and c) is present in an amount ...

Collector Compositions and Methods of Using Thereof

A collector composition comprising (a) refined tall oil wherein the refined tall oil is any tall oil that has been subjected to one or more refining or processing steps that results in an increase in acid value; and (b) a fatty acid wherein the refined tall oil has an acid value of at least 90 mg KOH/g and a weight average molecular weight of at least 750 g/mol. A mineral slurry comprising (a) an ore comprising a mineral of interest; (b) a collector composition comprising (i) a refined tall oil; and (ii) a fatty acid; and (c) a liquid. A method for the beneficiation of an ore, the method comprising (a) preparing a slurry comprising the ore dispersed in a liquid; (b) contacting the slurry with a collector composition comprising a refined tall oil; and (c) recovering a beneficiated ore. 1. A collector composition comprising:(a) refined tall oil wherein the refined tall oil is any tall oil that has been subjected to one or more refining or processing steps that results in an increase in acid value; and(b) a fatty acid;wherein the refined tall oil has an acid value of at least 90 mg KOH/g and a weight average molecular weight of at least 750 g/mol;wherein the refined tall oil comprises an ester content of less than 15% by weight, based on the weight of the refined tall oil and a polymeric acid content of at least 20% by weight, based on the weight of the refined tall oil.2. The composition of claim 1 , wherein the refined tall oil has a weight average molecular weight of from 750 g/mol to 1300 g/mol.3. The composition of claim 1 , wherein the refined tall oil comprises at least 40% by weight fatty acids claim 1 , rosin acids claim 1 , and fatty acid esters claim 1 , based on the weight of the refined tall oil.4. The composition of claim 1 , wherein the refined tall oil comprises at least 4.5% by weight linoleic acid and at least 7.5% by weight oleic acid claim 1 , based on the weight of the refined tall oil.5. The composition of claim 1 , wherein the refined tall oil is ...

COLLECTORS FOR TREATING TAILINGS

A process for treating and dewatering tailings comprising fine clay minerals, fine rock-forming minerals and water is provided, comprising treating the tailings with a sufficient amount of a collector to modify the surface properties of both the fine clays and rock-forming minerals; subjecting the treated tailings to froth flotation to form a fine clays and rock-forming minerals froth layer; and recovering the froth layer and subjecting it to dewatering. 1. A process for treating and dewatering tailings comprising fine clay minerals , fine rock-forming minerals and water , comprising:(a) treating the tailings with a sufficient amount of a collector to modify the surface properties of both the fine clays and rock-forming minerals;(b) subjecting the treated tailings froth flotation to form a fine clays and rock-forming minerals froth layer; and(c) recovering the froth layer and subjecting it to dewatering.2. The process as claimed in claim 1 , wherein the froth layer is dewatered by drainage and air drying.3. The process as claimed in claim 1 , wherein the collector is a quaternary amine claim 1 , an ether amine or an ether diamine.4. The process as claimed in claim 1 , further comprising pre-treating the tailings with a flocculant claim 1 , a coagulant or both prior to treatment with the collector.5. The process as claimed in claim 4 , wherein the flocculant is an anionic polyacylamide or a cationic polymer.6. The process as claimed in claim 4 , wherein the coagulant is polyaluminum chloride.7. The process as claimed in claim 1 , wherein the froth later is dewatered by liquid solids separation in a gravity separator claim 1 , a thickener claim 1 , a centrifuge or a settling basin.8. The process as claimed in claim 1 , wherein the tailings is a fluid fine tailings.9. The process as claimed in claim 1 , wherein the tailings are fine tailings produced during bitumen extraction of oil sands.10. The process as claimed in claim 1 , wherein the collector is selected from ...

METHOD FOR PRODUCING A DISPERSION AND USE OF PROTEIN HYDROLYSATES AS DISPERSANTS

The present invention relates to a method for producing a dispersion and to the use of a protein hydrolysate as a dispersant or dispersing agent. In particular, the invention relates to a method for producing a suspension as well as the use of a protein hydrolysate as a dispersant in a suspension. According to the invention it is proposed to use in particular hydrolysates of proteins with a consecutive sequence of amino acids with polar and nonpolar side groups as dispersants. 1. A method of dispersing a disperse phase in a liquid dispersion medium , comprising:providing a liquid dispersion medium;providing a disperse phase;providing a dispersant; andmixing the disperse phase with the liquid dispersion medium with the addition of the dispersant, whereina protein hydrolysate is added as a dispersant.2. The method according to claim 1 , wherein water claim 1 , an aqueous solution or a hydrophobic solvent is provided as a dispersion medium.3. The method according to claim 1 , wherein a solid or a liquid phase which is immiscible in the provided dispersion medium is provided as the disperse phase.4. The method according to claim 1 , wherein a hydrolysate of a protein having a consecutive sequence of amino acids with polar and nonpolar side groups is provided as the protein hydrolysate.5. The method according to claim 1 , wherein a keratin hydrolysate is provided as a protein hydrolysate.6. The method according to claim 1 , wherein the dispersant of the dispersion to be prepared is added in a concentration of between ≧1 wt % claim 1 , and ≦50 wt. % claim 1 , preferably between ≧3 wt. % claim 1 , and ≦35 wt. % claim 1 , more preferably between ≧5 wt. % and ≦25 wt. %.7. The method according to claim 1 , wherein a pigment is provided as the disperse phase.8. The method according to claim 7 , wherein titanium dioxide and/or zinc oxide is provided as a disperse phase.9. A method of dispersing a disperse phase claim 7 , comprising contacting the disperse phase with a protein ...

Sulfonated modifiers for froth flotation

Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like.

SYNTHETIC BEADS/BUBBLES FUNCTIONALIZED WITH MOLECULES FOR ATTRACTING AND ATTACHING TO MINERAL PARTICLES OF INTEREST

A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attracting mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment. 1. A synthetic bead comprising:a solid-phase body comprising a surface; anda plurality of molecules attached to at least part of the surface, the molecules comprising a functional group selected for attracting one or more mineral particles to the molecules.2. The synthetic bead according to claim 1 , wherein the solid-phase body is made of a synthetic material comprising the molecules.3. The synthetic bead according to claim 1 , wherein the solid-phase body comprises a shell providing the surface claim 1 , the shell made of a synthetic material comprising the molecules.4. The synthetic bead according to claim 3 , wherein the synthetic bead is configured to attract the mineral particles in an aqueous mixture claim 3 , and wherein the shell comprises an interior part arranged to encapsulate a gaseous element such that the bead has a density smaller than the aqueous mixture.5. The synthetic bead according to claim 3 , wherein the synthetic bead is configured to attract or attach to the mineral particles in an aqueous mixture claim 3 , and wherein the shell comprises an interior part arranged to encapsulate a liquid having a chemical property different from the aqueous mixture.6. The synthetic bead according to ...

Method for Improving Rheological Properties of Mineral Slurry

A method for improving the rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals. Also disclosed is a method for flotating mineral slurry. 1. A method for improving rheological properties of mineral slurry comprising adding a copolymeric dispersing agent to the slurry to disperse silicate minerals.2. The method of claim 1 , wherein the silicate mineral is magnesium silicate.3. The method of claim 1 , wherein the silicate mineral is serpentine.4. The method of claim 1 , wherein the rheological properties comprise the viscosity of the slurry.5. The method of any of the - claim 1 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid.6. The method of claim 5 , wherein the copolymer has a molecular weight of 9000-20000 Daltons.7. The method of claim 5 , wherein said copolymer has a molecular weight of 15000-20000 Daltons.8. The method of any of the - claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is in the range of 70:30 to 50:50 (w/w).9. The method of any of the - claim 5 , wherein the ratio of acrylic acid to 2-acrylamido-2-methyl propane sulfonic acid is about 60:40 (w/w).10. The method of any of the - claim 5 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and hydroxyethyl methacrylate.11. The method of claim 10 , wherein the copolymer has a molecular weight of 6000-14000 Daltons.12. The method of or claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate may be in the range of 80:20 to 60:40 (w/w).13. The method of or claim 10 , wherein the ratio of acrylic acid to hydroxyethyl methacrylate is about 70:30 (w/w).14. The method of any of the - claim 10 , wherein the copolymeric dispersing agent is a copolymer of acrylic acid and methacrylic acid.15. The method of claim 14 , wherein the copolymer has a molecular weight of 4000-7000 ...

Complex depressant for controlling zinc and iron in polymetallic-ore flotation, production process and application as a substitute for zinc sulfates and copper sulfates

This proposed invention consists of a process for elaborating a depressant agent, which includes, by weight percentage, dissolving 1-40% humic acid, or humic acid derivatives, in 50-99% water at a temperature between 15-30° C. and solubilizing it by adding 0-10% potassium hydroxide; the temperature will rise due to the solvation of potassium hydroxide (30-45° C.); leaving to react and homogenize for 20-60 minutes; causing the latter product to react with 0.1-15% of fulvic acid to generate a product that controls zinc and iron during flotation. The purpose of this invention is to fully replace zinc sulfate, reducing the dosage of the replacement depressant agent by up to 20 times less, furthermore reducing the amount of CuSO4 used in the flotation process, among other improvements.

Composition and method for improvement in froth flotation

The invention provides methods and compositions for improving a froth flotation type separation. The method involves adding a hydrocarbon reaction product to slurry to enhance the separation. The method is particularly effective with coal separation because it increases yield without increasing ash content of flotation concentrate.

Depressants for Mineral Ore Flotation

Depressants comprising one or more types of polysaccharides comprising one or more types of pentosan units are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more of the depressants. 1. A depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units.2. The depressant of claim 1 , wherein the one or more types of polysaccharides are derived from plant cell walls or algae.3. The depressant of claim 1 , wherein the one or more types of pentosan units comprise xylan units.4. The depressant of claim 1 , wherein the one or more types of polysaccharides comprise one type of pentosan.5. The depressant of claim 4 , wherein the one type of pentosan is xylan.6. The depressant of claim 5 , wherein the xylan may be extracted from sugar cane bagasse or corn fiber residue with dilute alkaline solutions.7. A composition comprising:a depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units; anda solvent.8. The composition of claim 7 , wherein the solvent is water.9. A process for enriching a desired mineral from an ore comprising the desired mineral and gangue claim 7 , wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more depressants claim 7 , and wherein at least one of the one or more depressants comprises one or more types of polysaccharides comprising one or more types of pentosan units.10. The process of claim 9 , wherein the desired mineral is an iron-containing mineral.11. The process of claim 9 , wherein the gangue comprises oxides of silica claim 9 , silicates or siliceous materials.12. The process of claim 9 , wherein the flotation process is a reverse cationic flotation process.13. The process of claim 9 , ...

MINERAL SEPARATION USING SIZED-, WEIGHT- OR MAGNETIC-BASED POLYMER BUBBLES OR BEADS

Apparatus for use in, or forming part of, a separation process to be implemented in separation processor technology, the apparatus comprising synthetic bubbles or beads configured with a polymer or polymer-based material functionalized to attach to a valuable material in a mixture so as to form an enriched synthetic bubbles or beads having the valuable material attached thereto, and also configured to be separated from the mixture based at least partly on a difference in a physical property between the enriched synthetic bubbles or beads having the valuable material attached thereto and the mixture. 131-. (canceled)32. Apparatus for use in , or forming part of , a separation process to be implemented in separation processor technology , the apparatus comprising:synthetic beads, each synthetic bead having body made of a synthetic material, the synthetic material comprising a polymer or polymer-based material, the body having a surface configured with a hydrophobic silicone polymer different from said synthetic material, said synthetic beads functionalized to attach to a valuable material in a mixture having water so as to form an enriched synthetic beads having the valuable material attached thereto, and also configured to be separated from the mixture based at least partly on a difference in a physical property between the enriched synthetic beads having the valuable material attached thereto and the mixture, wherein the valuable material comprises mineral particles.33. Apparatus according to claim 32 , wherein the synthetic beads are configured to be separated from the mixture based at least partly on the difference between the size of the enriched synthetic beads having the valuable material attached thereto in relation to the size of unwanted material in the mixture.34. Apparatus according to claim 32 , wherein the synthetic beads are configured to be separated from the mixture based at least partly on the difference between the weight of the enriched synthetic ...

METHOD AND SYSTEM FOR RELEASING MINERAL FROM SYNTHETIC BUBBLES AND BEADS

A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attaching mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment. 138-. (canceled)39. An apparatus comprising:a plurality of synthetic beads carrying mineral particles, each of the synthetic beads comprising a surface made of a synthetic material and a plurality of molecules attached to the surface, the molecules comprising a functional group having a chemical bond for attracting one or more of the mineral particles to the molecules so as to cause the mineral particles to attach to synthetic beads, the surface comprising a coating attached thereto to provide the plurality of molecules, the coating being made of a coating material different from the synthetic material, the coating material comprising a hydrophobic chemical selected from the group consisting of polysiloxanates, poly(dimethylsiloxane) and fluoroalkysilane; anda releasing apparatus configured to interrupt the chemical bond of the functional group so as to remove the mineral particles from the synthetic beads.40. The apparatus according to claim 39 , wherein the synthetic beads carrying the mineral particles are received in a mixture having a first temperature claim 39 , wherein said release apparatus is configured to cause the synthetic beads carrying the mineral particles to contact with a medium having a ...

HIGH INTENSITY CONDITIONING PRIOR TO ENHANCED MINERAL SEPARATION PROCESS

A system for separating mineral particles of interest from an ore features mineral processing operations/stages/circuits configured to receive an ore, or mineral particles or concentrates formed by processing the ore, and provide processed mineral particles or concentrates, or a waste stream, for further enhanced mineral separation downstream processing; an enhanced mineral separation processor having a collection apparatus located therein, the collection apparatus having a collection surface configured with a functionalized polymer including molecules having a functional group configured to attract the mineral particles of interest to the collection surface, the enhanced mineral separation processor receive the processed mineral particles or concentrates, or the waste stream, and provide further enhanced downstream processed mineral particles or concentrates, or a further enhanced downstream processed waste stream; and a high intensity conditioning operation, stage or circuit configured to apply a high intensity form of energy to the processed mineral particles or concentrates, or the waste stream, prior to further enhanced mineral separation downstream processing by the enhanced mineral separation processor. 1. A system for separating mineral particles of interest from an ore , comprising:mineral processing operations, stages or circuits configured to receive an ore, or mineral particles or concentrates formed by processing the ore, and provide processed mineral particles or concentrates, or a waste stream, for further enhanced mineral separation downstream processing;an enhanced mineral separation processor having at least one collection apparatus located therein, the at least one collection apparatus having a collection surface configured with a functionalized polymer comprising a plurality of molecules having a functional group configured to attract the mineral particles of interest to the collection surface, the enhanced mineral separation processor configured ...

Cationic polymer selective depressants and use thereof in mineral ore purification methods

The present embodiments generally relate to a technology for improving Cu/Mo grade by the addition of cationic polymers as selective depressants for acid insoluble matters, e.g., silicates and/or clays, in the flotation circuit. Various types of cationic polymers are demonstrated to be effective depressants including polyamine, polyDADMAC, and cationic polyacrylamide. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more cationic polymer depressants.

RECOVERY MEDIA FOR MINERAL PROCESSING, USING OPEN CELL OR RETICULATED FOAM HAVING 3-DIMENSIONAL FUNCTIONALIZED OPEN-NETWORK STRUCTURE FOR SELECTIVE SEPARATION OF MINERAL PARTICLES IN AN AQUEOUS SYSTEM

An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The surfaces are functionalized with a hydrophobic chemical having molecules with a functional group for attaching mineral particles to the collection surfaces. The engineered collection medium can be a foam block, a filter or conveyor belt to be placed in a slurry to collect mineral particles in the slurry. The engineered collection medium carrying the mineral particles is provided to a release apparatus where the mineral particles can be released by using mechanical agitation, sonic agitation and so forth. 1. An engineered collection medium , comprisinga solid-phase body configured with a three-dimensional open-cell structure to provide a plurality of collection surfaces; anda plurality of molecules provided on the collection surfaces, the molecules comprising a functional group having a chemical bond for attracting one or more mineral particles in an aqueous mixture to the molecules, causing the mineral particles to attached to the collection surfaces.2. The engineered collection medium according to claim 1 , further comprising a coating configured with a hydrophobic chemical selected from a group consisting of polysiloxanates claim 1 , poly(dimethylsiloxane) claim 1 , fluoroalkylsilane and/or pressure sensitive adhesives with low surface energy to provide the molecules.3. The engineered collection medium according to claim 2 , wherein the solid phase body is made from a material selected from polyurethane claim 2 , polyester urethane claim 2 , polyether urethane claim 2 , reinforced urethanes claim 2 , PVC coated PV claim 2 , silicone claim 2 , polychloroprene claim 2 , polyisocyanurate claim 2 , polystyrene claim 2 , polyolefin claim 2 , polyvinylchloride claim 2 , epoxy claim 2 , latex claim 2 , fluoropolymer claim 2 , ...

PROCESS TO TREAT PHOSPHATE ORES

The present invention relates to a process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector, wherein the primary collector is selected from the group of amphoteric and anionic surface active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2, to collector compositions suitable for use in the above process, and to pulp comprising such collector compositions. 1. Process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector , containing between 3 and 60 wt % of secondary collector and between 40 and 97 wt % of primary collector , the wt % being based on total collector components , wherein the primary collector is selected from the group of amphoteric and anionic surface-active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2.2. Process of claim 1 , wherein the ethoxylated fatty acid is of the formula{'br': None, 'i': 'n', 'R—C(O)—O-(EO)\u2003\u2003(I),'}wherein R is an alkyl or alkenyl group having 7 to 23 carbon atoms and EO is an ethyleneoxy unit; n is a number of higher than 0.5 and less than 2.3. Process of claim 2 , wherein R is a hydrocarbyl group having 11 to 21 carbon atoms claim 2 , can be linear or branched claim 2 , contain 0 to 4 double bonds and may be substituted with up to 3 hydroxyl substituents.4. Process of claim 1 , wherein the primary collector is an anionic surfactant selected from the group of fatty acids claim 1 , alkyl benzene sulfonates claim 1 , alkyl phosphates claim 1 , alkyl sulfates claim 1 , alkyl sulfosuccinamates claim 1 , alkyl sulfosuccinates claim 1 , alkyl lactylates claim 1 , alkyl hydroxamates claim 1 , N-acyl neutral amino acid claim 1 , like N-acyl derivatives of sarcosine or N-acyl derivatives of glycine claim 1 , or mixtures thereof.6 ...

IRON CHELATORS AS ACTIVATORS IN ALKALINE FLOTATION CIRCUITS

The present invention is directed to a method for selectively recovering a mineral from an ore applying a promoter being a substituted ethylene diamine. Further, the present invention is directed to the use of said substituted polymeric alkylenediamine to separate a target mineral from an ore. 1. A method for selectively recovering a mineral from an ore , comprising:i) grinding the ore,ii) preparing a pulp of the ground ore obtained in step i),iii) adding at least one promoter comprising at least one substituted polymeric alkylene diamine to the pulp obtained in step ii), andiv) subjecting the pulp containing the at least one promoter obtained in step iii) to froth flotation.2. The method according to claim 1 , wherein the pH value of the pulp is adjusted to a range of 8.0 to 12.0.3. The method according to claim 1 , wherein the concentration of the at least one promoter within the pulp is in the range of 5 to 250 g/t.6. The method according to claim 4 , wherein the polyalkyleneimine moiety B or salt thereof is a polyethyleneimine moiety B or salt thereof.9. The method according to claim 4 , wherein Y is a carboxylate (—COOR).10. The method according to claim 9 , wherein the substituents Rare independently from each other H claim 9 , Li claim 9 , Na or K.12. The method according to claim 11 , wherein the substituents Rare independently from each other H or Na.13. The method according to claim 12 , wherein 90 to 100 mol-% of the substituents Rare Na.15. The method according to claim 1 , wherein the pulp further comprises at least one collector.16. The method according to claim 15 , wherein the collector is selected from the group consisting of xanthates claim 15 , dithiophosphates claim 15 , thionocarbamates claim 15 , dithiocarbamates claim 15 , xantoformiates claim 15 , xanthate esters claim 15 , dithiophosphates claim 15 , monothiophosphates claim 15 , dithiophosphinates claim 15 , hydroxamic acids and their alkali metal or ammonium salts claim 15 , alkyl- claim ...

COMBINED COLLECTOR FOR ZINC OXIDE ORE FLOTATION AND USE THEREOF

The present disclosure discloses a combined collector for zinc oxide ore flotation, including the following components in percentage by mass: 60-95 wt % of a fatty acid, 0-10 wt % of a hydroxamic acid and 5-35 wt % of a mercaptobenzothiazole. In the flotation process of zinc oxide ore, due to the use of the combined collector of the present disclosure, it is not required to deslime. On the premise of ensuring the zinc grade in the zinc concentrate, the flotation recovery rate of the zinc concentrate is improved and the zinc grade of mineral processing tailings is reduced by using the combined collector, thereby reducing the loss of zinc metal. 1. A combined collector for zinc oxide ore flotation , comprising the following components in percentage by mass:60-95 wt % of a fatty acid;0-10 wt % of a hydroximic acid; and5-35 wt % of a mercaptobenzothiazole.2. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the combined collector comprises the following components in percentage by mass:70-85 wt % of a fatty acid;5-10 wt % of a hydroximic acid; and10-20 wt % of a mercaptobenzothiazole.3. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the fatty acid is at least one selected from the group consisting of oleic acid claim 1 , oleate claim 1 , palmitic acid claim 1 , palmitate claim 1 , stearic acid claim 1 , stearate claim 1 , lauric acid claim 1 , laurate claim 1 , palmitic acid and palmitate.4. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the hydroximic acid is at least one selected from the group consisting of benzylhydroximic acid claim 1 , salicylhydroxamic acid and alkyl hydroxamic acid.5. The combined collector for zinc oxide ore flotation as claimed in claim 1 , wherein the mercaptobenzothiazole is at least one selected from the group consisting of 2-mercaptobenzothiazole and sodium 2-mercaptobenzothiazole.6. A use of the combined collector for zinc oxide ore ...

Agglomerated Hemicellulose Compositions, Methods of Preparation Thereof, and Processes for Enriching a Desired Mineral from an Ore

Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition. 1. An agglomerated hemicellulose composition comprising agglomerates , wherein at least about 50% of the agglomerates are retained on a 20 mesh sieve , at least about 90% of the agglomerates are retained on a 100 mesh sieve , and the size of the agglomerates ranges from about 0.1 to about 15 mm.3. The agglomerated hemicellulose composition of claim 2 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.5. The method of claim 4 , wherein step (c) comprises (i) agglomerating the new or undigested plant material comprising hemicellulose with the granulation fluid to provide a wet agglomerated hemicellulose composition and (ii) heating the wet agglomerated hemicellulose composition to provide the agglomerated hemicellulose composition.6. The method of claim 5 , wherein the water content of the wet agglomerated hemicellulose composition is from about 65% to about 90% by weight.7. The method of claim 4 , wherein the granulation fluid comprises water and a caustic agent selected from sodium hydroxide claim 4 , calcium hydroxide claim 4 , potassium hydroxide claim 4 , lithium hydroxide claim 4 , rubidium hydroxide claim 4 , cesium hydroxide claim 4 , magnesium hydroxide claim 4 , strontium hydroxide claim 4 , barium hydroxide claim 4 , calcium hydroxide claim 4 , a ...

MINERAL BENEFICIATION UTILIZING ENGINEERED MATERIALS FOR MINERAL SEPARATION AND COARSE PARTICLE RECOVERY

A selective recirculation circuit has a loading stage, a stripping stage and a filtering stage for use in processing a feed stream or slurry containing mineral particles. The stripping stage forms a first loop with the loading stage, and a second loop with the filtering stage. The loading stage has a loading mixer and a loading washing screen. The stripping stage has a stripping mixer and a stripping washing screen. The loading mixer receives the slurry and causes barren media in the circuit to contact with the slurry so that the mineral particles in the slurry are loaded onto the barren media. The media is directed to the stripping stage where the mineral particles are removed from the media. The barren media is recycled to the loading stage. The stripping solution recovered from the filtering stage is returned to the stripping stage and the mineral particles are discharged as concentrate. 1. Apparatus comprising:a loading stage configured to receive barren media and a slurry containing mineral particles and to load the barren media with the mineral particles for providing loaded media;a stripping stage configured to strip the loaded media with a stripping solution into a first portion comprising the barren media and a second portion containing the mineral particles and the stripping solution; anda filtering stage configured to separate the mineral particles from the stripping solution in the second portion.2. The apparatus according to claim 1 , wherein the barren media comprises engineered material having molecules with a functional group configured to attract the mineral particles to the engineered material.3. The apparatus according to claim 2 , wherein the engineered material comprises synthetic bubbles and beads having a surface to provide the molecules.4. The apparatus according to claim 3 , wherein the synthetic bubbles and beads are made of a hydrophobic material having the molecules.5. The apparatus according to claim 3 , wherein the surface of the ...

UTILIZING ENGINEERED MEDIA FOR RECOVERY OF MINERALS IN TAILINGS STREAM AT THE END OF A FLOTATION SEPARATION PROCESS

Apparatus uses engineered collection media to recover mineral particles in a mineral extraction process, e.g., for processing a tailings stream at the end of a flotation separation process. The engineered collection media are added to slurry/tailings containing the mineral particles. The engineered collection media have collection surfaces coated with a chemical selected for attracting the mineral particles to the collection surfaces so the engineered collection media becomes mineral laden media in the slurry/tailings in a loading stage. The apparatus include three stages: removing unwanted material from mineral laden media; using a stripping agent to strip the mineral particles from the mineral laden media; and separating the engineered collection media from the mineral particles and the stripping agent. The stripping agent is reused for stripping, and the engineered collection media are returned to the loading stage. The engineered collection media can have a smooth or foam-like surface. 1. Apparatus comprising:a first separation device configured to receive a first mixture containing mineral laden media and unwanted material, the first separation device further configured to separate the mineral laden media from the unwanted material in the first mixture, the mineral laden media comprising engineered collection media with a collection surface having mineral particles attached thereto;a stripping device configured to receive from the first separation device the mineral laden media and to cause the mineral laden media to contact with a stripping agent, the stripping device further configured to cause the mineral particles attached on the collection surface to separate from the engineered collection media;a second separation device configured to receive from the stripping device a second mixture containing the stripping agent, the mineral particles and the engineered collection media, the second separation device further configured to separate the engineered ...

Methods of Preparing Hemicellulose Compositions

Multi-extraction methods for preparing hemicellulose compositions are provided. Depressant compositions comprising hemicellulose compositions are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising hemicellulose. 1. A method for preparing a hemicellulose composition or a depressant composition comprising hemicellulose , comprising:(a) combining new or undigested plant material comprising hemicellulose, at least one caustic base and, optionally, at least one oxidant to form a first reaction mixture;(b) reacting the first reaction mixture for a time sufficient to form a first reaction product containing hemicellulose, wherein the reaction product comprises a liquid portion and solid portion;(c) separating at least some of the liquid portion of the first reaction product from the solid portion of the first reaction product to provide a first hemicellulose composition;(d) combining at least a portion of the first hemicellulose composition with new or undigested plant material, at least one caustic base and, optionally, at least one oxidant to form a second reaction mixture,(e) reacting the second reaction mixture for a time sufficient to form a second reaction product containing hemicellulose, wherein the reaction product comprises a liquid portion and a solid portion; and(f) separating at least some of the liquid portion of the second reaction product from the solid portion of the second reaction product to provide a second hemicellulose composition or depressant composition comprising hemicellulose.2. The method of claim 1 , wherein the method further comprises:(g) combining at least a portion of the second hemicellulose composition with new or undigested plant material, at least one caustic base and, optionally, at least one oxidant to form a ...

Polyester Polyquaternary Ammonium Compound Collectors For Reverse Froth Flotation Of Silicates From Nonsulfidic Ores

The present invention relates to a compound obtainable by the condensation of a polyol having 3-4 hydroxyl groups, adicarboxylic acid or a derivative thereof, an alkanolamine and a fatty acid, followed by reaction with an alkylating agent. This compound is useful as a collector in a process for the reverse froth flotation of non-sulfidic ores containing silicate as impurities, especially phosphate ores.

NON-FLOTATION BASED RECOVERY OF MINERAL BEARING ORE USING HYDROPHOBIC PARTICLE COLLECTION IN A PIPELINE SECTION

Apparatus uses hydrophobic synthetic beads to recover mineral particles in a slurry. The synthetic beads and the slurry are mixed into a mixture for processing. The apparatus has an interaction vessel installed in a section of pipeline. The interaction vessel is made from a pipeline folded or coiled into a compact struction having a continuous flow path. The interaction vessel has an input to receive the mixture of slurry and synthetic beads. The folded or coiled structure is used to increase the residence time of the mixture in the flow path, allowing more time for the mineral particles in the slurry to attach to the surface of the synthetic bead, while maintaining a small footprint. The interaction vessel may be formed from a number of loops of pipe section. The interaction vessel may be formed from one or more folded structures. 1. An apparatus , comprising:a fluid conduit arranged to receive a mixture of slurry and a plurality of synthetic beads, the slurry comprising mineral particles and undesirable ore material, the fluid conduit also arranged to discharge enriched synthetic beads having mineral particles attached thereon, the synthetic beads having a surface functionalized with a hydrophobic material, wherein at least part of the fluid conduit is shaped into an interaction vessel, the interaction vessel having a first vessel end end and a second vessel end, and wherein a distance between the first vessel end and the second vessel end is at least 6 times smaller than a fluid path in the fluid conduit in the interaction vessel.2. The apparatus according to claim 1 , wherein said part of fluid conduit is coiled into a plurality of loops claim 1 , said plurality of loops comprises n loop claim 1 , with n being a positive number greater 2.3. The apparatus according to claim 2 , wherein n=8 or greater.4. The apparatus according to claim 2 , wherein said plurality of loops comprises continuous loops placed one on top of another.5. The apparatus according to claim 2 ...

Polyquaternary Polymer as a Depressant in a Method for Froth Flotation of Potash Ores

The present invention relates to the use of a polyquaternary polymer obtainable by reacting i) a dialkylamine having the structure R 1 R 2 NH, where R 1 and R 2 independently are hydrocarbyl groups having 1-3 carbon atoms; ii) a difunctional compound selected from the group consisting of epihalohydrins, diepoxides, precursors of epihalohydrins and epoxides which under alkaline conditions are readily converted into the corresponding epoxy compounds, and mixtures thereof; and iii) optionally a polyfunctional amine selected from the group consisting of ammonia, primary amines, alkylenediamines having 2-6 carbon atoms, and polyalkyle nepolyamines having the structure H 2 N—[R 3 —N(R 4 )] y —R 3 —NH 2 , where y is an integer from 1 to 5, R 3 is an alkylene radical having 2 to 6 carbon atoms, and R 4 is selected from the group consisting of hydrogen, a hydrocarbyl group having 1-3 carbon atoms, and an ω-aminoalkyl group having 2 to 6 carbon atoms; as a depressant in a method for froth flotation of potash ores.

APPARATUS FOR SIMULTANEOUS GRINDING AND FROTH FLOTATION

The present invention relates to apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment, a process carried out in the apparatus for manufacturing at least one ground mineral and/or pigment, use of the ground mineral and/or pigment bearing phase obtainable by the process in paper applications as well as in paper, plastics, paints, coatings, adhesives, sealants, food, feed, pharma, concrete, cement, cosmetic, water treatment and/or agriculture applications, preferably in a wet end process of paper machine, in cigarette paper, board, and/or coating applications, or as support for rotogravure and/or offset and/or ink jet printing and/or continuous ink jet printing and/or flexography and/or electrophotography and/or decoration surfaces and the ground mineral and/or pigment bearing phase or ground mineral and/or pigment obtainable by the process. 1. An apparatus for simultaneous grinding and froth flotation of at least one crude mineral and/or pigment , comprising{'b': 1', '2, 'a) a vessel () suitable for containing grinding media (), a flotation gas, a collector agent and at least one crude mineral and/or pigment;'}{'b': 3', '1, 'b) an agitation unit () rotatably mounted in vessel ();'}{'b': 4', '3', '2, 'c) drive means () connected to agitation unit () for agitating the grinding media () and the at least one crude mineral and/or pigment to grind the at least one crude mineral and/or pigment into at least one ground mineral and/or pigment;'}{'b': 5', '1, 'claim-text': [{'b': '5', 'i': 'a', 'i. a crude mineral and/or pigment feed (),'}, {'b': '5', 'i': 'b', 'ii. a collector agent feed (), and'}, {'b': '5', 'i': 'c', 'iii. a flotation gas inlet ();'}], 'd) a charge system () connected to vessel () comprising'}{'b': 6', '1, 'claim-text': [{'b': '6', 'i': 'a', 'i. a sieve () suitable for separating the froth from the ground mineral and/or pigment,'}, {'b': '6', 'i': 'b', 'ii. a product collecting zone () suitable for collecting ...

Frothers for mineral flotation

The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a frother. The improvement allows for low dosages of frother to work as well as much greater amounts of non-microemulsified frother.

Mineral Processing

According to the invention there is provided a method of processing a mixture of minerals including the steps of: 64. A method of processing a mixture of minerals including the steps of:(a) providing a mixture of minerals which includes a metal containing mineral and one or more unwanted gangue minerals;(b) achieving a contact between the mixture of minerals and polymeric material that includes a mineral binding moiety which selectively binds to the metal containing mineral; and(c) separating the gangue minerals and the polymeric material which has the metal containing mineral bound thereto.65. A method according to in which the metal containing mineral contains copper.68. A method according to in which the mineral binding moiety is a thionocarbamate claim 67 , thiourea claim 67 , thiol claim 67 , thiocycloalkane claim 67 , thiophosphate or xanthogen formate containing functional group.74. A method according to in which the polymer formed by polymerising the polymeric precursor encapsulates the mineral binding moiety.75. A method according to in which the polymer formed by polymerising the polymeric precursor is a homopolymer.76. A method according to in which the polymer is a copolymer produced by copolymerising the polymeric precursor with one or more other polymeric precursors and/or with a cross-linker.77. A method according to in which the polymeric material includes a methacrylate polymer.78. A method according to in which the polymeric material includes a silane polymer.79. A method according to in which the polymeric material includes a polymeric substrate having a surface which has the mineral binding moiety attached thereto.80. A method according to in which the polymeric material includes polymeric chains which are grafted onto the surface of the polymeric substrate claim 79 , wherein the polymeric chains include the mineral binding moiety.81. A method according to in which the polymeric substrate is an epoxide or a diisocyanate having the polymeric ...

Depressants for Mineral Ore Flotation

Depressants comprising one or more types of polysaccharides comprising one or more types of pentosan units are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more of the depressants. 1. A depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units.2. The depressant of claim 1 , wherein the one or more types of polysaccharides are derived from plant cell walls or algae.3. The depressant of claim 1 , wherein the one or more types of pentosan units comprise xylan units.4. The depressant of claim 1 , wherein the one or more types of polysaccharides comprise one type of pentosan.5. The depressant of claim 4 , wherein the one type of pentosan is xylan.6. The depressant of claim 5 , wherein the xylan may be extracted from sugar cane bagasse or corn fiber residue with dilute alkaline solutions.7. A composition comprising:a depressant comprising one or more types of polysaccharides comprising one or more types of pentosan units; anda solvent.8. The composition of claim 7 , wherein the solvent is water.9. A process for enriching a desired mineral from an ore comprising the desired mineral and gangue claim 7 , wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and one or more depressants claim 7 , and wherein at least one of the one or more depressants comprises one or more types of polysaccharides comprising one or more types of pentosan units.10. The process of claim 9 , wherein the desired mineral is an iron-containing mineral.11. The process of claim 9 , wherein the gangue comprises oxides of silica claim 9 , silicates or siliceous materials.12. The process of claim 9 , wherein the flotation process is a reverse cationic flotation process.13. The process of claim 9 , ...

FLOCCULANTS AND METHODS FOR RECOVERING BITUMEN FROM OIL SANDS

A flocculant, according to embodiments of the present disclosure, includes a core nanoparticle and at least one positively charged functional group on a surface of the core nanoparticle. The nanoparticle may comprise a silica, alumina, titania, iron oxide, iron nitride, iron carbide, or a carbon-based nanoparticle. The flocculant may be used, in a method of bitumen recovery, to neutralize and agglomerate bitumen droplets and/or mineral particles derived from oil sands ore. The bitumen droplets agglomerate about the core nanoparticle of the flocculant to form bitumen flocs, while the mineral particles agglomerate about the core nanoparticle of the flocculant to form mineral flocs. The buoyant bitumen flocs may then separate from the dense mineral flocs to enable high-yield recovery of bitumen from oil sands. 1. A flocculant for bitumen recovery , comprising:a core nanoparticle selected from the group consisting of silica nanoparticles, alumina nanoparticles, titania nanoparticles, iron oxide nanoparticles, iron nitride nanoparticles, iron carbide nanoparticles, and carbon-based nanoparticles; andat least one functional group on a surface of the core nanoparticle, the at least one functional group being positively charged.2. The flocculant of claim 1 , wherein the core nanoparticle has a diameter of less than about 50 nm.3. The flocculant of claim 1 , wherein the core nanoparticle is a carbon-based nanoparticle selected from the group consisting of nano-diamonds claim 1 , carbon nano-tubes claim 1 , fullerenes claim 1 , carbon onion-like structures claim 1 , graphene claim 1 , and graphene oxide.4. The flocculant of claim 1 , wherein the functional group is selected from the group consisting of primary claim 1 , secondary claim 1 , and tertiary amine groups claim 1 , amide groups claim 1 , quaternary ammonium groups claim 1 , quaternary phosphonium groups claim 1 , tertiary sulphonium groups claim 1 , pyridinium groups claim 1 , imidazolium groups claim 1 , ...

COMPOSITIONS AND METHODS FOR SELECTIVE SEPARATION OF MINERALS FROM SULFIDE ORES

Compositions including blends of one or more acrylamide/allyl thiourea polymer as a first depressant, and one or more carboxyalkyl dithiocarbamate compound as a second depressant, and their use as depressants in the beneficiation of sulfide minerals from ores and/or concentrates are disclosed herein, along with methods for selectively separating value sulfide minerals from non-value sulfide minerals in a froth flotation process for the recovery of such value minerals. 2. A mineral flotation composition according to claim 1 , wherein the weight ratio of the first depressant to the second depressant is from 25:75 to 50:50.3. A mineral flotation composition according to claim 1 , wherein said blend of the first and second depressant is from 10 to 50 parts by weight claim 1 , per 100 parts by weight of water claim 1 , and having 4 Подробнее

COMPOSITIONS AND METHODS FOR REVERSE FROTH FLOTATION OF PHOSPHATE ORES

Improved sparge compositions for reverse froth flotation separation and uses thereof, and improved methods of reverse froth flotation are described. Described are sparge compositions comprising collectors and beneficiating agents, the collectors comprising sulfonated fatty acids and/or salts thereof, and the beneficiating agents comprising a hydroxy fatty acid composition. The sparge compositions are suitably used in the reverse froth flotation to separate phosphate beneficiary from ores comprising phosphate and dolomite, calcite, silicate, and/or other gangues. The disclosed compositions and methods exhibit improved separation of phosphate from such ores. 1. A sparge composition comprising:(i) a medium comprising water;(ii) a phosphate ore comprising a phosphate beneficiary and a gangue;(iii) a collector comprising one or more sulfonated fatty acids, one or more sulfonated fatty acid salts, or any combination thereof; and(iv) a beneficiating agent comprising one or more hydroxy fatty acids, one or more hydroxy fatty acid salts, or any combination thereof.2. The sparge composition of claim 1 , wherein the beneficiating agent comprises ricinoleic acid claim 1 , a salt of ricinoleic acid claim 1 , 12-hydroxystearic acid claim 1 , a salt of 12-hydroxystearic acid claim 1 , 9 claim 1 ,10-dihydroxyoctadecanoic acid claim 1 , a salt of 9 claim 1 ,10-dihydroxyoctadecanoic acid claim 1 , 9 claim 1 ,10 claim 1 ,18-trihydroxyoctadecanoic acid claim 1 , a salt of 9 claim 1 ,10 claim 1 ,18-trihydroxyoctadecanoic acid claim 1 , lesquerolic acid claim 1 , a salt of lesquerolic acid claim 1 , 15-hydroxyhexadecanoic acid claim 1 , a salt of 15-hydroxyhexadecanoic acid claim 1 , isoricinoleic acid claim 1 , a salt of isoricinoleic acid claim 1 , densipolic acid claim 1 , a salt of densipolic acid claim 1 , 14-hydroxy-eicosa-cis-11-cis-17-dienoic acid claim 1 , a salt of 14-hydroxy-eicosa-cis-11-cis-17-dienoic acid claim 1 , 2-hydroxyoleic acid claim 1 , a salt of 2-hydroxyoleic acid ...

PEPTIDE BINDING TO ARSENIC-CONTAINING MINERAL AND USE THEREOF

(Technical problems to be solved) Providing a method for selecting minerals containing arsenic (Means for solving the problems) A peptide comprising an amino acids sequence according to the following formula: (TSNQ)-(HPW)-(ED)-(HPWRK)-(LIVFA)-(LIVFA)-(LIVFA)-(TSNQ)-(HPW)-(LIVFA)-(TSNQ)-(LIVFA) wherein one amino acid is respectively selected from each group defined by paired parentheses. 18-. (canceled)9. A peptide comprising an amino acids sequence according to the following formula:{'br': None, '(TSNQ)-(HPW)-(ED)-(HPWRK)-(LIVFA)-(LIVFA)-(LIVFA)-(TSNQ)-(HPW)(LIVFA)-(TSNQ)-(LIVFA)'}wherein one amino acid is respectively selected from each group defined by paired parentheses.10. A peptide comprising a sequence which is at least 95% identical to the following sequence:{'br': None, 'Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.'}11. A peptide of comprising a sequence which is at least 100% identical the following sequence:{'br': None, 'Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.'}12. A peptide of according to the following sequence:{'br': None, 'Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.'}13. A peptide comprising a sequence derived from the following sequence by deleting claim 11 , replacing claim 11 , and/or adding 1-5 amino acid:{'br': None, 'Asn-Pro-Glu-His-Ala-Ala-Phe-Ser-Pro-Val-Thr-Val.'}14. A composition for selecting and/or identifying a mineral containing arsenic claim 9 , the composition comprising the peptide of .15. A microorganism comprising on its surface the peptide of .16. A particle comprising on its surface the peptide of .17. A purification column comprising the peptide of .18. A collector for use of froth flotation comprising the peptide of .19. A depressant for use of froth flotation comprising the peptide of .20. A method for isolating a mineral containing arsenic claim 9 , the method comprising using the peptide of .21. A method for selecting and/or identifying a mineral containing arsenic claim 9 , the method comprising using the ...

MINERAL BENEFICIATION METHOD USING BIOREAGENT EXTRACTED FROM GRAM POSITIVE BACTERIA

The object of this invention is to provide a method of mineral flotation using bioreagents extracted from Gram positive bacteria and . In this sense, mineral floatability was evaluated using bioreagent extracted from Gram positive bacteria to determine its potential as an alternative to synthetic reagents and also an alternative to the use of microorganisms themselves (biomass). 1Rhodococcusopacus, erythropolis. Mineral beneficiation method , characterized by the fact that it uses bioreagent extracted from the bacterium () , which is subjected to bacterial growth , and comprises the following steps:A—Comminution of ore and preparation of pulp;B—Addition of reagents and conditioning;C—Froth flotation.2. Mineral beneficiation method claim 1 , according to claim 1 , characterized by the fact that said minerals include hematite claim 1 , calcite claim 1 , dolomite and apatite claim 1 , aiming at the recovery of the metal/element of interest from an ore containing any of the minerals mentioned above.3. Mineral beneficiation method claim 1 , according to claim 1 , characterized by the fact that said minerals include mineral systems claim 1 , preferably the hematite-quartz system.4Rhodococcusopacus, erythropolis. Mineral beneficiation method claim 1 , according to claim 1 , characterized by the fact that the extraction of bioreagent from the cell wall of bacterium () is carried out by a solvent extraction process claim 1 , preferably hot ethanol extraction (100-140° C.).5Rhodococcusopacus, erythropolis. Mineral beneficiation method claim 1 , according to claim 1 , characterized by the fact that the reagent added in step B only includes the bioreagent extracted from the bacterium () in a concentration range of 25 to 200 mg/L.6Rhodococcusopacus, erythropolis. Mineral beneficiation method claim 1 , according to claim 1 , characterized by the fact that the reagents added in step B include the bioreagent extracted from the bacterium () claim 1 , a depressant reagent claim 1 , a ...

Effluent Treatment System

A dispersion for use with an effluent treatment system, and methods of making and using such a dispersion, whereby the dispersion includes an amount of polymer substantially uniformly dispersed within an aqueous solvent; wherein the dispersion is generated by combining an amount of gas with the amount of polymer and the aqueous solvent, the amount of gas effective to substantially uniformly disperse the amount of polymer within the aqueous solvent. 1. A dispersion for use with an effluent treatment system , said dispersion comprising:an amount of polymer substantially uniformly dispersed within an aqueous solvent;wherein said dispersion is generated by combining an amount of gas with said amount of polymer and said aqueous solvent, said amount of gas effective to substantially uniformly disperse said amount of polymer within said aqueous solvent.2. The dispersion of claim 1 , wherein said amount of polymer is in a range of between about 0.1% to about 50% of said dispersion by weight.3. The dispersion of claim 1 , wherein said aqueous solvent comprises water.4. The dispersion of claim 3 , wherein said gas comprises air.5. The dispersion of claim 4 , wherein said air is in the form of air bubbles.6. The dispersion of claim 5 , wherein said air bubbles generate mixing forces which relatively gently mix said amount of polymer and said water to substantially uniformly disperse said amount of polymer within said water to provide said dispersion.7. The dispersion of claim 6 , wherein said amount of polymer is substantially uniformly dispersed within said water to provide a generally homogenous polymer-water mixture.8. The dispersion of claim 6 , wherein said amount of polymer and said water are mixed by forces consisting of said mixing forces generated by said air bubbles claim 6 , which are effective to substantially uniformly disperse said amount of polymer within said water to provide said dispersion.9. The dispersion of claim 6 , wherein upon application of said mixing ...

Selective Polysaccharide Agents and Flocculants for Mineral Ore Beneficiation

Selective polysaccharide agents or flocculants comprise one or more types of polysaccharides comprising one or more types of pentosan units. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue and/or other minerals, wherein the process comprises treating the ore in an aqueous medium with one or more selective polysaccharide agents or flocculants comprising one or more types of polysaccharides comprising one or more types of pentosan units. 1. A process for enriching a desired mineral or material from an ore having iron-containing material and/or silicate-containing gangue , includes treating the ore in an aqueous medium with one or more selective polysaccharide agents or flocculants comprising one or more types of pentosan units.2. The process of claim 1 , wherein the desired mineral is an iron-containing mineral.3. The process of claim 1 , wherein the gangue comprises oxides of silica claim 1 , silicates or siliceous materials.4. The process of claim 1 , wherein the process comprises the steps of:(i) mixing a ground ore with a solvent to form a mixture;(ii) adding the one or more selective polysaccharide agents or flocculants to the mixture;(iii) agitating the mixture to distribute the selective polysaccharide agents or flocculants;(iv) allowing flocs to form; and(v) isolating the flocs.5. The process of claim 1 , wherein the one or more selective flocculants are added to tailings streams.6. A process for enriching claim 1 , or facilitating recovery of claim 1 , a desired mineral from a tailings stream comprising the desired mineral and gangue and/or other minerals claim 1 , wherein the process comprises treating the tailings stream with one or more selective polysaccharide agents or flocculants comprising one or more types of polysaccharides comprising one or more types of pentosan units.7. The process of claim 6 , wherein the tailings stream is a tailings stream of a desliming process.8. The process ...

Cellulose-based derivatives as chemical aids for mineral enrichment in froth flotation

Frother composition and method of concentrating minerals by flotation. The method comprises providing an aqueous slurry formed by the minerals in finely divided form in water; optionally adding a collector to render the mineral hydrophobic; subjecting the slurry thus obtained to flotation in a flotation cell aerated to form bubbles; and recovering the hydrophobic mineral particles together with the froth to form a concentrate. In the method an amphiphilic cellulose derivative, such as and a second surfactant as a frother to promote the formation of a stable froth on top of the slurry in the flotation cell. Hydroxypropyl methyl cellulose or hydroxyethyl methyl cellulose are combined with at least one non-ionic organic surfactant or polyglycol esters, for providing a frother. The novel cellulose-based frothers can be used in mineral processing plants to allow for processing of larger quantities of minerals without significant modification of existing facilities. 1. A frother composition comprising amphiphilic cellulose as a surfactant in combination with a second non-ionic surfactant.2. The composition according to claim 1 , wherein the amphiphilic cellulose is selected from non-ionic cellulose ethers.4. The composition according to claim 3 , wherein claim 3 , in each repeating unit of Formula I claim 3 , substituents R stand for at least one hydrogen claim 3 , at least one alkyl group claim 3 , and at least one hydroxyethyl or hydroxypropyl group.6. The composition according to claim 1 , wherein the amphiphilic cellulose is selected from the group consisting of hydroxypropyl methyl cellulose claim 1 , hydroxyethyl methyl cellulose claim 1 , and combinations thereof.7. The composition according to claim 1 , wherein the amphiphilic cellulose is a non-ionic cellulose ether having an average molecular weight (Mw) in the range of 500 to 5000 Da.8. The composition according to claim 1 , wherein the composition contains in addition to amphiphilic cellulose at least one ...

Verfahren zum drücken nichtsulfidischer silikatischer gangarten

Modified polysaccharides for depressing floatable gangue minerals

A class of non-sulfide, silicate gangue material depressants based on naturally- occurring galactomannans, having a galactose-to-mannose ratio of less than 1 :2.1, exemplified by modified products of the seed gums: casia tora gum, sesbania gum, kalonji gum, Ceratonia siliqua gum and/or Tamarindus indica gum, and methods of making and using them.

Improvements relating to particle separation

The present invention provides a blended preparation for the separation especially of coal particles from the tailings which are contained in the fines produced in coal mining. The blended preparation is used instead of or in addition to the conventional froth oil. The blended preparation comprises froth oil, flocculating agent, emulsifying agent, water and optionally, anti-freeze. The use of the preparation results in faster separation and saving in flocculating agent.

Flotation of paper fibers

Flotationsmittel zum Klaeren von Papierfasern enthaltenden Abwaessern

METHOD FOR PRESSING NON-SULFIDIC SILICATIC GANGES

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a polymeric material comprising recurring units of the formula: <IMAGE> wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35%, y represents a residual mole fraction of from about 1 to 50% and z represents a residual mole fraction of from about 0 to about 50%.

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a polymeric mixture of a polysaccharide and a material comprising recurring units of the formula: <IMAGE> wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35%, y represents a residual mole fraction of from about 1 to 50% and z represents a residual mole fraction of from about 0 to about 50%.

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

Method of depressing non-sulfide silicate gangue minerals

抑制非硫化物硅酸盐脉石矿物的方法

本发明提供了一种抑制非硫化物硅酸盐脉石矿物的方法，其中抑制剂为(1)一种包括以下化学式重复单元的聚合物：-[-X-]-x-[-Y-]-y-[-Z-]-z，其中，X是一种丙烯酰胺单体或多种丙烯酰胺单体混合物的聚合残基，Y是含有羟基的聚合物单元，Z为含有阴离子基团的聚合物单元，x表示残基的摩尔百分数，至少约35%，y表示残基的摩尔百分数，约在1-50%的范围内，z表示残基的摩尔百分数，约在0-50%的范围内，或者(2)所述聚合物和多糖类的混合物。

Method of depressing non-sulfide silicate gangue minerals

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangueminerals is provided wherein the depressant is either a polymericmaterial comprising recurring units of the formula:-[-X-]-x-[-Y-]-y -[-Z-]-z wherein X is the polymerization residueof an acrylamide or mixture of acrylamides, Y is an hydroxy groupcontaining polymer unit, Z is an anionic group containing polymerunit, x represents a residual mole fraction of at least about 35%, y represents a residual mole fraction of from about 1 to 50 %and z represents a residual mole fraction of from about 0 to about50 %, or a mixture of said polymer and a polysaccharide.

Processo que compreende o beneficiamento de minerais de sulfeto de valor a partir de minérios com a rejeição seletiva de minerais de ganga de silicato não-sulfeto

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-] -z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polyme r and a polysaccharide.

Process for suppressing non-sulfidic silicate aisle minerals

PROCEDURE TO REDUCE MINERALS OF SILICATE BARGAIN WITHOUT SULFIDE.

SE PROPONE UN METODO PARA LA DEPRESION DE MINERALES DE GANGA SILICATOS NO SULFURADOS EN DONDE EL DEPRESOR ES BIEN (1) UN MATERIAL POLIMERICO QUE INCLUYE UNIDADES RECURRENTES DE FORMULA:[ ,Z} DONDE X ES EL RESIDUO DE POLIMERIZACION DE UNA ACRILAMIDA O MEZCLA DE ACRILAMIDAS, Y ES UNA UNIDAD POLIMERICA QUE CONTIENE UN GRUPO HIDROXI, Z ES UNA UNIDAD POLIMERICA QUE CONTIENE UN GRUPO ANIONICO, X REPRESENTA UNA FRACCION MOLAR RESIDUAL DE AL MENOS APROXIMADAMENTE EL 35 %, Y REPRESENTA UNA FRACCION MOLAR RESIDUAL DE ENTRE APROXIMADAMENTE 1 Y 50 % Y Z REPRESENTA UNA FRACCION MOLAR RESIDUAL DE ENTRE APROXIMADAMENTE 0 Y APROXIMADAMENTE 50 %, O (2) UNA MEZCLA DE DICHO POLIMERO Y UN POLISACARIDO. A METHOD IS PROPOSED FOR THE DEPRESSION OF UNSULFURATED SILICATE GANGA MINERALS WHERE THE DEPRESSOR IS WELL (1) A POLYMERIC MATERIAL THAT INCLUDES RECURRING UNITS OF FORMULA: [, Z} WHERE X IS THE RESIDUE OF POLYMERIZATION OF AN ACRILE ACRYLAMIDS, AND IS A POLYMERIC UNIT CONTAINING A HYDROXI GROUP, Z IS A POLYMERIC UNIT CONTAINING AN ANIONIC GROUP, X REPRESENTS A RESIDUAL MOLAR FRACTION OF AT LEAST APPROXIMATELY 35%, AND REPRESENTS A RESIDUAL MOLAR FRACTION OF 1 AND 5 OF % YZ REPRESENTS A RESIDUAL MOLLAR FRACTION OF BETWEEN APPROXIMATELY 0 AND APPROXIMATELY 50%, OR (2) A MIXTURE OF SUCH A POLYMER AND A POLYSaccharide.

Sposób wzbogacania cennych mineralów siarczkowych z rud PL PL PL PL PL

1 . S p o s ó b wzbogacania cennych mineralów siarczkowych z rud, z selektywnym odrzuceniem niesiarczkowych mine ralów krzemianowych skaly plonnej, polegajacy n a : dostarczaniu wodnej zawiesiny papki subtelnie rozdrobnionych, uwolnionych czastek rudy, zawierajacej cenne mineraly siarczkowe oraz niesiarczkowe mineraly krzemianowe skaly plonnej, kondycjonowaniu zawiesiny papki z efektywna iloscia, odpowiednio, depresora niesiarczkowego mineralu krzemiano- w ego skaly plonnej, kolektora cenn eg o mineralu siarczkowego i srodka pianotwórczego i, zbieraniu c e n neg o mineralu siarczkowego o zmniejszonej zawartosci niesiarczkowych mineralów krzemianowych skaly plonnej m etoda flotacji pianowej, znamienny tym, ze stosu je s ie depresor obejmujacy polimer zawierajacy: (i) x merów o wzorze: (ii) y merów o wzorze: (iii) z merów o wzorze: w których X oznacza reszte polim er yzacyjna p ochodzaca o d m onom eru lub m ieszaniny monomerów akryloamidowych, Y oznacza mer polimeru zawierajacy grupe hydroksylowa, Z oznacza mer polimeru zawierajacy grupe anionowa, x oznacza udzial reszt w % molowych w ynoszacy p o n a d 35%, y ozn a c za udzial w % m olowych w zakresie o d 1 d o 50%, a z oznacza udzial w % molowych w zakresie o d 0 d o 50%. PL PL PL PL PL

Metodo de depressao de gangas minerais de silicatos nao-sulfuretos

Method of enriching industrially important sulfide minerals

FIELD: mining industry. SUBSTANCE: invention relates to froth flotation methods for isolating sulfide minerals from basic metal sulfide ores. In flotation process, depressant is either (i) polymer material containing structural unit having general formula -[X] x -[Y] y -[Z] z - where X is acrylamide or acrylamides' mixture polymerization moiety, Y anion group-containing polymer unit, Z hydroxyl group-containing polymer unit, x is about 35 mol %, y varies from about 1 to about 50 mol %, and z varies from about 1 to about 50 mol %, or (ii) mixture of above-defined polymer with polysaccharide. EFFECT: increased degree of recovery. 10 cl, 12 tbl дубе тс Пы Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 139 147‘ (51) МПК 13) СЛ В 03 О 1/016//В 03 0 101:06 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98100189/03, 07.05.1996 (24) Дата начала действия патента: 07.05.1996 (30) Приоритет: 07.06.1995 Ц$ 08.474805 07.06.1995 Ц$ 08.475160 (46) Дата публикации: 10.10.1999 (56) Ссылки: 4$ 4744893 А, 17.05.88. ЗЦ 42773ТА, 25.10.74. 50 144124 А, 10.11.62. 4$ 4902764 А, 20.02.90. 4$ 436042Ъ А, 23.11.82. 4$ 4120339 А, 19.01.88. (85) Дата перевода заявки РСТ на национальную фазу: 08.01.98 (86) Заявка РСТ: 4$ 96/06477 (07.05.96) (87) Публикация РСТ: М/О 96/40438 (19.12.96) (98) Адрес для переписки: 103735, Москва, ул.Ильинка 5/2, Союзпатент, Томской Е.В. (71) Заявитель: Сайтек Текнолоджи Корп. (1$) (72) Изобретатель: Д.Р.Нагарадж (1$), Сэмюель С.Ванг (1$), Джеймс С.Ли (4$), Лино Мальокко (Ц$) (73) Патентообладатель: Сайтек Текнолоджи Корп. (1$) (54) СПОСОБ ОБОГАЩЕНИЯ ПРОМЫШЛЕННО ЗНАЧИМЫХ СУЛЬФИДНЫХ МИНЕРАЛОВ (57) Реферат: Способ относится к способам пенной флотации для извлечения промышленно значимых сульфидных минералов из основных металлических сульфидных руд. Способ обогащения промышленно значимых сульфидных минералов предусматривает, что депрессантом является либо полимерный материал, содержащий периодически повторяющиеся звенья с ...

Flotation reagents and flotation processes utilizing same

FIELD: chemistry. SUBSTANCE: present invention relates to floatation reagents and a method of froth flotation for improved extraction of valuable sulphide minerals and precious metals from ores, silicate-containing Mg, slime forming minerals and/or clay. Method of enhancing recovery of a value sulphide and/or precious-metal mineral from an ore, containing said mineral and/or precious-metal mineral and one or more of Mg silicate, slime forming minerals and/or clay comprises adding to one or more stage of froth flotation process performed under acidic conditions, a froth phase modifier. Froth phase modifier is a polymer, including one or more functional groups, selected from a group, consisting of sulphonate groups or corresponding acids, phosphate groups or corresponding acids, phosphonic groups or corresponding acids, phosphinate groups or corresponding acids, hydroxamate groups or corresponding acids, silane groups and silanol groups. EFFECT: technical result is higher extraction of valuable sulphide minerals and/or precious-metal minerals from said ore. 15 cl, 12 tbl, 65 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 612 760 C2 (51) МПК B03D 1/016 (2006.01) B03D 1/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2014132897, 16.07.2009 (24) Дата начала отсчета срока действия патента: 16.07.2009 Дата регистрации: Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.02.2016 Бюл. № 6 (45) Опубликовано: 13.03.2017 Бюл. № 8 2 6 1 2 7 6 0 R U (56) Список документов, цитированных в отчете о поиске: US 5533626 А, 09.07.1996. RU 2139147 C1, 10.10.1999. RU 2140329 C1, 27.10.1999. SU 144124 A1, 01.01.1962. RU 2175331 C2, 27.10.2001. US 20060151360 A1, 13.07.2006. US 5126038 A, 30.06.1992. US 4744893 A, 17.09.1988. ПОЛЬКИН С.И. и др., "Обогащение руд цветных металлов", Москва, Недра, 1983, 230-232. (54) ФЛОТАЦИОННЫЕ РЕАГЕНТЫ И СПОСОБ ФЛОТАЦИИ С ИХ ИСПОЛЬЗОВАНИЕМ (57) ...

Sulfide flotation aid

The invention provides a method of improving a flotation separation process. The method involves PAPEMP, a material previously thought to only be of use in controlling scale deposit on surfaces of equipment used in cyanide leaching. In the invention the PAPEMP is added to the flotation separation process for improved sulfide mineral separation. Not only does the addition of PAPEMP improve the overall recovery of sulfide complexed metals in flotation, but by doing so it also reduces the energy requirements and adds other efficiencies to other downstream ore processing and refining steps. This has the added benefit of helping to preserve the environment.

Synthetic beads/bubbles functionalized with molecules for attracting and attaching to mineral particles of interest

A synthetic bead for use in mineral separation is described. The synthetic bead has a surface made of a synthetic material such as polymer and the synthetic material is functionalized with molecules having a functional group for attracting mineral particles to the surface in a separation process. The synthetic beads can be placed in flotation cell containing a mixture of water, valuable material and unwanted material or in a pipeline where the mixture is transported from one location to another. The enriched synthetic beads carrying the mineral particles are separated from the unwanted materials in the mixture. The mineral particles are then released from the synthetic beads by means of low pH treatment, ultrasonic agitation, thermal or electromagnetic treatment.

Depressants for mineral ore flotation

Depressants comprising a polymer comprising: a) recurring units of one or more acrylamide monomers; b) recurring units of one or more monomers selected from hydroxyalkyl alkylacrylate, allyloxyalkyldiol, allyloxyethanol, trimethylolpropane allyl ether, and 2-hydroxy ethyl acrylate; and optionally, c) recurring units of one or more acrylic acid monomers are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants.

Flotation of ores using addition polymers as depressants

Depressants

Flotation beneficiation process for non-sulfide minerals

An improved method of separating non-sulfide value minerals from non-sulfide ores is disclosed. The improved method includes the step of adding a depressant selective for siliceous gangue minerals and materials to a flotation slurry previously conditioned with an anionic collector. In preferred embodiments, the depressants comprise copolymers or terpolymers derived from acrylamide units and N-acrylamidoglycolic acid units. The method provides generally improved recoveries of non-sulfide value minerals at higher grade, in a reduced number of flotation steps and at reduced consumption levels of flotation reagents.

Polymeric sulfide mineral depressants

A novel polymer composition comprising recurring units of the formula: <IMAGE> wherein each R1 is, individually, hydrogen or C1-C4 alkyl; each R5, individually, is hydrogen or a C1-C4 lower alkyl group; X is OH or SH; Y is OR2, SR2, NR22, or NR2-NR22; R2 is hydrogen, a C1-C4 lower alkyl or a C1-C4 substituted lower alkyl, no more than one of Y and X being hydroxyl, and M is hydrogen, an alkali metal cation or an ammonium ion; x represents a residual mole percent fraction; y is a mole percent fraction ranging from about 0.5% to about 25%; z is a mole percent fraction ranging from about 0% to about 25%; and the molecular weight of the polymer is between about 1,000 and 500,000.

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

Method of lowering flotability on non-sulphidic silicous minerals of waste rock

抑制非硫化物硅酸盐脉石矿物的方法

本发明提供了一种抑制非硫化物硅酸盐脉石矿物的方法,其中抑制剂为(1)一种包括以下化学式重复单元的聚合物:－[－X－]－ x －[－Y－]－ y －[－Z－]－ z ,其中,X是一种丙烯酰胺单体或多种丙烯酰胺单体混合物的聚合残基,Y是含有羟基的聚合物单元,Z为含有阴离子基团的聚合物单元,x表示残基的摩尔百分数,至少约35%,y表示残基的摩尔百分数,约在1—50%的范围内,z表示残基的摩尔百分数,约在0—50%的范围内,或者(2)所述聚合物和多糖类的混合物。

Method of depressing non-sulfide silicate gangue minerals

Method of depressing non-sulfide silicate gangue minerals

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

ALUMINA RECOVERY PROCESS

SUIVANT LE PROCEDE DE L'INVENTION, DES SUSPENSIONS AQUEUSES DE BOUES ROUGES SONT EFFICACEMENT ENLEVEES DU PROCEDE BAYER POUR LA FABRICATION D'ALUMINE PAR L'ADDITION, AU MOINS AU PREMIER STADE DU CIRCUIT DE RECUPERATION PAR BASE CAUSTIQUE, D'UN FLOCULANT CHOISI PARMI L'AMIDON, DES HOMOPOLYMERES D'ACIDE ACRYLIQUE OU D'ACRYLATES, DES COPOLYMERES D'ACIDE ACRYLIQUE OU D'ACRYLATES CONTENANT AU MOINS 80MOLES POUR CENT DE MONOMERES D'ACIDE ACRYLIQUE OU D'ACRYLATE ET LEURS COMBINAISONS, ET PAR ADDITION SUBSEQUENTE, AUX STADES SUIVANTS, PLUS DILUES, DU CIRCUIT DE RECUPERATION D'UN COPOLYMERE CONTENANT ENVIRON 35 A 75MOLES POUR CENT D'ACIDE ACRYLIQUE OU D'ACRYLATE ET ENVIRON 65 A 25 MOLES POUR CENT DE MONOMERES POLYMERISABLES A INSATURATION ETHYLENIQUE, NOTAMMENT L'ACRYLAMIDE. FOLLOWING THE PROCESS OF THE INVENTION, AQUEOUS RED SLUDGE SUSPENSIONS ARE EFFECTIVELY REMOVED FROM THE BAYER PROCESS FOR THE MANUFACTURE OF ALUMINA BY THE ADDITION, AT LEAST IN THE FIRST STAGE OF THE CAUSTIC-BASED RECOVERY CIRCUIT, FROM A SELECTED FLOCCULANT. STARCH, HOMOPOLYMERS OF ACRYLIC ACID OR ACRYLATES, COPOLYMERS OF ACRYLIC ACID OR ACRYLATES CONTAINING AT LEAST 80 MOLES PERCENT OF ACRYLIC ACID OR ACRYLATE MONOMERS AND THEIR COMBINATIONS, AND BY SUBSEQUENT ADDITION, AT THE FOLLOWING, MORE DILUTE, STAGES OF THE RECOVERY CIRCUIT OF A COPOLYMER CONTAINING ABOUT 35 TO 75 MOLES PERCENT OF ACRYLIC OR ACRYLATE AND ABOUT 65 TO 25 MOLES PERCENT OF POLYMERISABLE MONOMERS WITH ETHYLENIC INSATURATION, IN PARTICULAR ACRYLIC.

硫化物浮选辅助方法

本方法提供改善浮选分离方法的方法。本方法涉及有机磷化合物，之前认为其仅用于控制氰化物浸出使用的设备表面水垢沉积物。在本发明中，将有机磷化合物加入浮选分离方法，用于改善硫化物矿物分离。加入有机磷化合物不仅提高在浮选中硫化物络合金属的整体回收，如此操作还降低能量需求以及增加其他下游矿石加工和精炼步骤的效率。这对帮助保护环境具有另外的益处。

Вспомогательное вещество сульфидной флотации

1. Способ улучшения извлечения продукта в виде частиц из тонко измельченной сульфидной минеральной руды путем флотационного процесса разделения, который включает стадии: обеспечение водной суспензией тонко измельченной руды, добавление к суспензии эффективного количества фосфорорганического соединения, предоставление достаточного времени пребывания фосфорорганического соединения в суспензии, селективная флотация продукта в виде частиц путем барботирования суспензии до формирования концентрата и жидкого раствора, и извлечение продукта в виде частиц из соответствующего концентрата или жидкого раствора; в котором фосфорорганическое соединение включает вещество, выбранное из группы, состоящей из ПАПЭМФ, в форме кислоты или соли; триалканоламинтри(эфир фосфорной кислоты), в форме кислоты или соли; аминотри(метиленфосфоновой кислоты), в форме кислоты или соли; полиэтиленаминполифосфоновой кислоты, в форме кислоты или соли; и их комбинация.2. Способ по п.1, в котором флотационный процесс является частью полного процесса очистки руды, и, если процесс очистки руды включает процесс цианирования, флотационный процесс осуществляют до процесса цианирования.3. Способ по п.1, в котором флотационный процесс является частью полного процесса очистки руды, который не включает процесс цианирования.4. Способ по п.1, далее включающий стадию добавления пенообразователя к суспензии.5. Способ по п.1, далее включающий стадию добавления коллектора к суспензии.6. Способ по п.1, далее включающий стадию добавления нитрата свинца, сульфата меди и любой их комбинации к суспензии.7. Способ по п.1, в котором продукт в виде частиц является � РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК C02F 1/24 (11) (13) 2012 133 745 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012133745/05, 15.02.2011 (71) Заявитель(и): НАЛКО КОМПАНИ (US) Приоритет(ы): (30) Конвенционный приоритет: 16.02.2010 US 12/706,091 (85) Дата начала рассмотрения заявки PCT на ...

Separation of minerals using functionalized membranes

FIELD: chemistry. SUBSTANCE: invention is intended for separation of valuable material from the mixture. Device comprises the first processor configured to obtain a mixture of fluid valuable material, undesirable material and functionalized cell with polymer coating configured to be attached to valuable material in the medium for bonding, and production of enriched functionalized cell with polymer coating having valuable material attached to it; and a second processor configured to obtain fluid and enriched functionalized cell with polymer coating in the medium for release for release of valuable material and obtaining the released valuable material from enriched functionalized cell with polymer coating in the medium enabling release. Valuable material contains mineral particles, and functionalized polymer-coated element comprises surface, coated with hydrophobic silicone polymer. Method of separating involves obtaining in the first processor mixture fluid valuable material and undesirable material and functionalized cell with polymer coating configured to be attached to valuable material in the medium for bonding, and obtaining of the first processor enriched functionalized cell with polymer coating having valuable material attached to it; and obtaining in the second processor fluid and enriched functionalized cell with polymer coating in a medium facilitating release, to release valuable material, and feeding valuable material the released from enriched functionalized cell with polymer coating, in the medium enabling release. EFFECT: technical effect: improved separation of valuable material from the mixture. 36 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 600 764 C2 (51) МПК B01D 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013157582/05, 25.05.2012 (24) Дата начала отсчета срока действия патента: 25.05.2012 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: ...

一种用于菱镁矿反浮选脱硅复合浮选捕收剂及其制备方法

本发明公开一种用于菱镁矿反浮选脱硅复合浮选捕收剂及其制备方法，属于矿物加工技术领域。本发明的捕收剂以十二胺为主捕收剂，有机烃类溶剂为辅助捕收剂，MIBC为起泡剂，并含有其他调整剂的复合浮选捕收药剂。本发明的捕收剂，在菱镁矿反浮选脱硅工艺中应用效果优异，且能够强化药剂各组分间的紧密作用，提高药剂稳定性；同时其制备过程较为简单，制备条件要求低，较短时间内即可快速完成成品制备。

Extraction of minerals from wastes using functionalised polymers

FIELD: technological processes. SUBSTANCE: invention relates to separation of valuable material from waste material in mixtures, such as wastes of flotation process. Method of extraction of minerals from tailings of flotation process comprises: providing a device for collecting functionalised synthetic material, comprising a plurality of molecules having a functional group for collection of mineral particles of interest to surface of collection device; and bringing device to collect contact tailings with mineral particles of interest including tailings of flotation process, wherein functional group is intended to make device surface for collecting hydrophobic, and wherein synthetic material is selected from a group consisting of a derivative of siloxane, polydimethylsiloxane and polysiloxanes of hydrophobically modified ethyl hydroxy ethylcellulose. Method is carried out using a system consisting of a collection processor operable to receive flotation tailings with mineral particles; and at least one device for collection, housed in collection processor. Device for collecting includes collecting surface formed with a functionalised polymer containing a plurality of molecules having a functional group designed for attraction of mineral particles of interest to collecting surface. Functional group is intended to make surface of device for collecting hydrophobic. Synthetic material is selected from a group consisting of a derivative of siloxane, polydimethylsiloxane and polysiloxanes of hydrophobically modified ethyl hydroxy ethylcellulose. EFFECT: higher efficiency of extraction of valuable materials from wastes. 21 cl, 19 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 585 615 C2 (51) МПК B03B 9/06 (2006.01) B03B 5/44 (2006.01) B03D 1/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013157534/03, 25.05.2012 (24) Дата начала отсчета срока действия патента: 25.05.2012 Приоритет(ы): (30) Конвенционный ...

使用官能化聚合物在尾矿中进行矿物回收

本文公开了一种用于捕集尾矿中的矿物颗粒的设备和方法。所述设备可采用过滤器、传送带、捕集板或叶轮的形式，所述过滤器、传送带、捕集板或叶轮被配置成在将浮选工艺的尾矿排放到尾矿库中之前和/或之后与所述尾矿接触。所述过滤器、传送带、捕集板或叶轮具有由合成材料制成或涂有所述合成材料的捕集区域或表面，所述合成材料具有官能团，所述官能团例如具有吸引所述目标矿物颗粒的电离键。或者，所述合成材料具有使得所述捕集区域具有疏水性的疏水性分子。当将所述尾矿中的所述目标矿物颗粒与捕集剂分子组合时，所述目标矿物颗粒也可能变得具有疏水性。所述疏水性目标矿物颗粒会被吸引到所述疏水性捕集区域或表面上。所述过滤器、传送带、捕集板以及叶轮可具有多个通道或合成珠粒，以便增加接触表面。