ПРИГОДНЫЕ ДЛЯ ПОВЫШЕНИЯ ЭЛАСТИЧНОСТИ ГРУБОКЕРАМИЧЕСКИХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ ОГНЕУПОРНЫЕ ГРАНУЛЯТЫ ШПИНЕЛИ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 131 234 A (51) МПК C04B 35/10 (2006.01) C04B 35/101 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018131234, 23.03.2017 (71) Заявитель(и): РЕФРАТЕХНИК ХОЛДИНГ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: 19.05.2016 DE 102016109258.4 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.12.2018 R U (43) Дата публикации заявки: 19.06.2020 Бюл. № 17 (72) Автор(ы): ЛИФЕР, Хайнрих (DE), ШУЛЬЦЕ-БЕРГКАМЕН, Хилмар (NZ), ФЕЛЛЬМЕР, Карстен (DE) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/198378 (23.11.2017) R U (54) ПРИГОДНЫЕ ДЛЯ ПОВЫШЕНИЯ ЭЛАСТИЧНОСТИ ГРУБОКЕРАМИЧЕСКИХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ ОГНЕУПОРНЫЕ ГРАНУЛЯТЫ ШПИНЕЛИ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ (57) Формула изобретения 1. Зернистый огнеупорный минеральный гранулят эластификатора для огнеупорных изделий, в частности для основных огнеупорных изделий, минералогически состоящий соответственно из монофазного продукта смешанного кристалла плавленой шпинели или многофазного продукта плавления трехкомпонентной системы MgO-Fe2O3-Al2O3 из диапазона состава MgO: от 12 до 19,5, в частности от 15 до 17 вес.%, остаток: Fe2O3 и Al2O3 в диапазоне количественных соотношений Fe2O3 к Al2O3 от 80 к 20 до 40 к 60 вес.%, причем, исходя из содержания MgO от 12 до 19,5 вес.%, соответствующие смешанные кристаллы содержат соответственно Fe2O3 и Al2O3 в твердом растворе в таких количествах, чтобы получить общий состав 100%. 2. Гранулят эластификатора по п. 1, отличающийся тем, что его насыпная плотность составляет ≥3,5, в частности ≥3,6, предпочтительно ≥3,7 г/ см3, наиболее предпочтительно до 3,8 г/см3, измеренной согласно DIN EN 993-18. 3. Гранулят эластификатора по пп. 1 и/или 2, Стр.: 1 A 2 0 1 8 1 3 1 2 3 4 A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" 2 0 1 8 1 3 1 2 3 4 EP 2017/056999 (23.03.2017) 2 0 1 8 1 3 1 2 3 4 R U A Стр.: 2 2 ...

Feuerfestes keramisches Material und zugehöriges Formteil und Masse

Feuerfestes keramisches Material der Zusammensetzung: a) 30 bis 66,5 M.-% MgO b) 10 bis 52,5 M.-% Al2O3 c) 5 bis 35,0 M.-% Cr2O3 d) 0 bis 5 M.-% sonstige Bestandteile mit a) + b) + c) + d) = 100 M.-%, dessen Gefüge zu 45 bis 95 M.-% aus einer MAC (MgOAl2O3Cr2O3) Spinellphase der Zusammensetzung e) 20 bis 28 M.-% MgO f) 17 bis 67 M.-% Al2O3 g) 6 bis 62 M.-% Cr2O3 h) 0 bis 5 M.-% sonstige Bestandteile und zu 5 bis 55 M.-% mindestens aus einer weiteren Gefügephase besteht, wobei Zusammensetzungen ausgeschlossen werden, die im Dreistoffsystem MgO-Al2O3-Cr2O3 innerhalb eines Bereichs liegen, der durch folgende Eckpunkte definiert ist, soweit sich dieser Bereich mit der Zusammensetzung gemäß a) bis d) überschneidet: A' = 53 Gew.-% MgO, 44 Gew.-% Al2O3 und 3 Gew.-% Cr2O3 A'' =...

BURNED BASIC REFRACTORY AND BATCH THEREFOR

... 1386826 Refractory batch CORHART REFRACTORIES CO 16 June 1972 [22 June 1971] 28220/72 Addition to 1286395 Heading C1J A size graded particulate batch comprises chemical grade chromite grain containing less than 4% SiO 2 , periclase grain, fused grain of a melted and resolidified mixture of chemical grade (defined) chromite and dead-burned magnesite; the fused grain analysing 40-58% MgO and ZrO 2 -yielding material, wherein 10- 35% is the chromite grain and substantially -10+150 mesh (Tyler) with less than 12% being - 100 mesh, 25-60% is - 4 + 20 mesh and composed ob based of the weight of the batch 5-60% of the fused grain and 0-40% of the periclase grain, 0-30% is -10+35 mesh and composed of at least one of the fused grain and the periclase grain 15-60% is - 35 mesh and composed of based on the whole batch 10-40% of the periclase grain and 0-50% of the fused grain, 4 to less than 50% is + 28 mesh and composed of at least one of chromite grain and periclase grain and the ZrO 2 -yielding ...

MATERIAL FUER DIE HERSTELLUNG VON FEUERFESTEN STEINEN U.DGL.

FEUERFESTE CHROMMAGNESITSTEINE UND -MASSEN, VERFAHREN ZUR IHRER HERSTELLUNG UND IHRE VERWENDUNG

FEUERFESTE AUSKLEIDUNG VON STATIONAREN ODER BEWEGLICHEN GEFASSEN ZUR AUFNAHME VON ROHEISEN

SPINELL-FORMING COMPOSITION AND THE USE THEREOF

A spinel-forming composition in the ternary system MgO-Al2O3-Cr2O3, which is characterized in that it is in the ternary system within the limits A'-A"-B"-B', wherein A'=53% by weight MgO, 44% by weight Al2O3 and 3% by weight Cr2O3; A"=21% by weight MgO, 76% by weight Al2O3 and 3% by weight Cr2O3; B"=19.5% by weight MgO, 60.5% by weight Al2O3 and 20% by weight Cr2O3; and B'=49% by weight MgO, 31% by weight Al2O3 and 20% by weight Cr2O3. An aspect of the invention is the use thereof as an additive to magnesia bricks.

REFRACTORY COMPOSITION

REFRACTORY CHROMIUM-MAGNESIA BRICKS AND MATTERS AND PROCESSES FOR THEIR PREPARATION

Calcined refractory ceramic brick used to line industrial furnaces

Calcined, refractory ceramic brick is made of MgO matrix and up to 8.0 wt% Cr2O3 of grain fraction 0.1-4 mm.

Refractory chromite magnesia bricks and masses, processes for their production and their use

Die Erfindung betrifft feuerfeste Chrommagnesiasteine und -massen, die aus einem gekörnten Schmelzmaterial mit einem Gehalt von 71 bis 82 Gew.-% Cr ↓2O ↓3 und 16 bis 28 Gew.-% MgO, wobei der Mindestgehalt an Cr ↓2O ↓3 und MgO 94 Gew.-% beträgt, aufgebaut sind. Zur Herstellung dieser Erzeugnisse werden 71 bis 83 Gew.-% grünes Chromoxid oder Cr ↓2O ↓3 liefernde Stoffe und 17 bis 29 Gew.-% Magnesia oder eines beim Schmelzen MgO liefernden Materials, das in geschmolzenem Zustand mindestens 95 Gew.-% MgO enthält, miteinander geschmolzen und das erhaltene Schmelzmaterial wird auf eine Korngröße von höchstens 12 mm zerkleinert und gewünschtenfalls zu Steinen verformt. Die Erzeugnisse sind insbesondere für die Zustellung von Elektroöfen und Entgasungsgefäßen, Glasofenregeneratoren und Kohlevergasungsanlagen geeignet. The invention relates to refractory chromium magnesia bricks and masses, which are made from a granular melt material with a content of 71 to 82% by weight Cr ↓ 2O ↓ 3 and 16 to 28% by weight MgO, the minimum content of Cr ↓ 2O ↓ 3 and MgO is 94 wt .-%, are built up. To produce these products, 71 to 83% by weight of green chromium oxide or Cr ↓ 2O ↓ 3 supplying substances and 17 to 29% by weight of magnesia or a material which supplies MgO when melted and which in the molten state is at least 95% by weight MgO are used contains, melted together and the resulting melt material is crushed to a grain size of at most 12 mm and, if desired, shaped into stones. The products are particularly suitable for the delivery of electric furnaces and degassing vessels, glass furnace regenerators and coal gasification plants.

Refractory chrome-magnesia bricks and compositions

Refractory chrome-magnesia bricks and compositions composed of a granular fused material having a grain size of 12 mm or less, and a content of from 71 to 83 wt. % Cr2O3 and from 17 to 29 wt. % MgO, the minimum content of Cr2O3 and MgO being 94 wt. %.

FIREPROOF COMPOSITION CONTAINING ELECTRICAL MELTED MAGNESIUM OXIDE WITH SMALL SILICON DIOXIDE PORTION AND FROM IT MANUFACTURED PRODUCT

FIREPROOF COMPOSITIONS ON THE BASIS OF FUSIONPOURED BASIC OXIDE GRAINS AND FIREPROOF BODIES MANUFACTURED WITH THESE COMPOSITIONS.

FIREPROOF LINING OF STATION ARENE OR MOBILE ONE GEFASSEN FOR THE ADMISSION OF PIG IRONS

FIREPROOF LINING FROM STATIONARY OR MOBILE CONTAINERS TO THE ADMISSION OF PIG IRONS

Material for the lining of degassing containers, converters and electrical furnaces

FIREPROOF CHROMIUM MAGNESITE STONES AND - MASSES, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE

CHROMIA MAGNESIA REFRACTORY

A chromia-magnesia based refractory product made up of fused chromia-magnesia grains bonded by an in situ formed chromia-magnesia bond. The product is very dense and is especially suitable when used to process molten materials which involve coal slag.

CHROMIA MAGNESIA REFRACTORY

PROCESS OF PRODUCING REFRACTORY MAGNESIA-CHROME BRICKS AND COMPOSITIONS

Refractory brick manufacturing process

Patent RU2018131234A3

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 131 234 A (51) МПК C04B 35/10 (2006.01) C04B 35/101 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018131234, 23.03.2017 (71) Заявитель(и): РЕФРАТЕХНИК ХОЛДИНГ ГМБХ (DE) Приоритет(ы): (30) Конвенционный приоритет: 19.05.2016 DE 102016109258.4 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 19.12.2018 R U (43) Дата публикации заявки: 19.06.2020 Бюл. № 17 (72) Автор(ы): ЛИФЕР, Хайнрих (DE), ШУЛЬЦЕ-БЕРГКАМЕН, Хилмар (NZ), ФЕЛЛЬМЕР, Карстен (DE) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/198378 (23.11.2017) R U (54) ПРИГОДНЫЕ ДЛЯ ПОВЫШЕНИЯ ЭЛАСТИЧНОСТИ ГРУБОКЕРАМИЧЕСКИХ ОГНЕУПОРНЫХ ИЗДЕЛИЙ ОГНЕУПОРНЫЕ ГРАНУЛЯТЫ ШПИНЕЛИ, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ (57) Формула изобретения 1. Зернистый огнеупорный минеральный гранулят эластификатора для огнеупорных изделий, в частности для основных огнеупорных изделий, минералогически состоящий соответственно из монофазного продукта смешанного кристалла плавленой шпинели или многофазного продукта плавления трехкомпонентной системы MgO-Fe2O3-Al2O3 из диапазона состава MgO: от 12 до 19,5, в частности от 15 до 17 вес.%, остаток: Fe2O3 и Al2O3 в диапазоне количественных соотношений Fe2O3 к Al2O3 от 80 к 20 до 40 к 60 вес.%, причем, исходя из содержания MgO от 12 до 19,5 вес.%, соответствующие смешанные кристаллы содержат соответственно Fe2O3 и Al2O3 в твердом растворе в таких количествах, чтобы получить общий состав 100%. 2. Гранулят эластификатора по п. 1, отличающийся тем, что его насыпная плотность составляет ≥3,5, в частности ≥3,6, предпочтительно ≥3,7 г/ см3, наиболее предпочтительно до 3,8 г/см3, измеренной согласно DIN EN 993-18. 3. Гранулят эластификатора по пп. 1 и/или 2, Стр.: 1 A 2 0 1 8 1 3 1 2 3 4 A Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" 2 0 1 8 1 3 1 2 3 4 EP 2017/056999 (23.03.2017) 2 0 1 8 1 3 1 2 3 4 R U A Стр.: 2 2 ...

Хромитопериклазовый огнеупор

FIELD: metallurgy. SUBSTANCE: refractory material comprises granular fused chromium periclase and dispersed magnesia component at the following ratio of components, wt %: granular fused chromium-periclase-base, dispersed component-15-30. As a dispersed component refractory material contains a mixture of fused chromium-periclase and sintered and/or cauterized periclase, taken in the ratio of (85-98):(2-15). The fused chromium-periclase contains, wt %: SiO 2 0.40-1.50; Al 2 O 3 3-10; Cr 2 O 3 15-28; CaO is less than 1.0; MgO 55-65; FeO 5-15. The chromium-periclase refractory material can additionally contain chromium oxide, titanium oxide, silicon oxide, zirconium oxide or their combinations in an amount up to 10% in the composition of dispersed component. EFFECT: increased resistance of the refractory material to structural cracking in contact with molten metal or slag. 8 cl, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 634 140 C1 (51) МПК C04B 35/047 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016137717, 21.09.2016 (24) Дата начала отсчета срока действия патента: 21.09.2016 Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Группа "Магнезит" (RU) Приоритет(ы): (22) Дата подачи заявки: 21.09.2016 (45) Опубликовано: 24.10.2017 Бюл. № 30 C 1 2 6 3 4 1 4 0 R U Стр.: 1 927781 A, 15.05.1982. US 4574119 A, 04.03.1986. US 4023786 A, 17.05.1977. JP 59-054670 A, 29.03.1984. смесь плавленого хромитопериклаза и спеченного и/или каустизированного периклаза, взятых в соотношении (85-98):(2-15). Плавленый хромитопериклаз содержит, мас.%: SiO2 0,40-1,50; Al2O3 3-10; Cr2O3 15-28; CaO менее 1,0; MgO 5565; FeO 5-15. Хромитопериклазовый огнеупор может дополнительно содержать оксид хрома, оксид титана, оксид кремния, оксид циркония или их комбинации в количестве до 10% в составе дисперсного компонента. Технический результат изобретения - увеличение сопротивления огнеупора ...

ХРОМИТОПЕРИКЛАЗОВЫЙ ОГНЕУПОР

FIELD: fire safety.SUBSTANCE: invention relates to refractory industry, namely to production of chrome-periclase materials intended for lining of out-of-furnace treatment of steel and metallurgical units operating in high-temperature mode in contact with aggressive medium. Chrome-periclase refractory including granular fused chrome-periclase, granular and dispersed periclase, chromite, disperse periclase contains sintered or fused periclase, and as granular periclase contains fused periclase with following ratio of components, wt%: granular fused chrome-periclase 45–60, granular periclase 5–20, dispersed periclase 15–30, chromite with particle size 0.1–0.8 mm 10–25. Weight-average particle diameter of the fused chromitopiclase fraction with particle size of not more than 6 mm and not less than 0.1 mm is not less than 2.3 mm. Median particle size of the periclase of the fraction with particle size of not more than 0.1 mm is less than 20 mcm. Refractory composition can contain up to 20 wt% of recycling with content of CrO18–25 wt%, such as crude oil scrap or scrap from presses.EFFECT: low heat conductivity, high heat resistance and slag-resistance.6 cl, 2 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 708 926 C1 (51) МПК C04B 35/047 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C04B 35/0473 (2019.08); C04B 35/42 (2019.08); C04B 2235/3206 (2019.08); C04B 2235/3243 (2019.08); C04B 2235/5418 (2019.08); C04B 2235/549 (2019.08); C04B 2235/604 (2019.08); C04B 2235/9607 (2019.08); C04B 2235/9669 (2019.08) (21)(22) Заявка: 2019105171, 25.02.2019 25.02.2019 Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Группа "Магнезит" (RU) Приоритет(ы): (22) Дата подачи заявки: 25.02.2019 2 7 0 8 9 2 6 R U Адрес для переписки: 456910, Челябинская обл., г. Сатка, ул. Солнечная, 34, Бюро по патентоведению и рационализации ОНТИиР ТУ, ООО "Группа "Магнезит", Лихачевой О.А. (54) ...

Verfahren zur Herstellung eines basischen feuerfesten Stoffes

FEUERFESTE ZUSAMMENSETZUNG ENTHALTEND ELEKTRISCH GESCHMOLZENES MAGNESIUMOXID MIT GERINGEM SILICIUMDIOXID-ANTEIL UND DARAUS HERGESTELLTE PRODUKT

REFRACTORY LINING FOR A PIG IRON CONTAINER

MATERIAL FOR THE PRODUCTION OF FIREPROOF STONES U.DGL.

COMPOSITION DE MORTIER REFRACTAIRE

LA COMPOSITION EST CONSTITUEE ESSENTIELLEMENT D'UN MELANGE DE 75 A 95 EN POIDS DE GRAINS D'OXYDE DE CHROME-MAGNESIE COFUSIONNES; 1 A 10 EN POIDS D'UN PLASTIFIANT REFRACTAIRE PULVERULENT CHOISI ENTRE L'ARGILE FIGULINE, LA BENTONITE, LE KAOLIN ET LEURS MELANGES; DE 6 A 12 EN POIDS D'UNE SOURCE D'OXYDE DE CHROME FINEMENT DIVISE EN PARTICULES; ET 0 A 5 EN POIDS D'UNE SOURCE DE MAGNESIE FINEMENT DIVISEE EN PARTICULES.

Magnesium aluminate spinel bonded refractory and method of making

Improvements in or relating to refractory materials

A refractory material consists of 15-25% Cr2O3, 45-75% Mg.O, 4-20% Al2O3, 3-15% FeO, 0.5-3% SiO2 and 0-3% CaO, the molar ratio of CaO : SiO being no greater than 2: 1 and the structure comprising abutting grains of periclase containing crystals of spinel and pockets of silicates. The structure is obtained by melting and gradually re-solidifying a mixture of chrome ore and magnesia.

Procedure for the production of a basic refractory material

MATERIAL FOR THE PRODUCTION OF FIREPROOF STONES U.DGL.

FIREPROOF CHROMIUM MAGNESITE STONES AND - MASSES, PROCEDURES FOR YOUR PRODUCTION AND YOUR USE

SPINEL REFRACTORY GRANULATES WHICH ARE SUITABLE FOR ELASTICIZING HEAVY-CLAY REFRACTORY PRODUCTS, METHOD FOR THEIR PRODUCTION AND USE THEREOF

The invention relates to a granular refractory mineral elasticizing granulate for refractory products, in particular for basic refractory products, wherein the minerals consist of mono-phase fused spinel mixed crystals or multi-phase fusion products of the ternary system MgO-Fe2O3-Al2O3 of the composition range MgO: 12 to 19.5, in particular 15 to 17 wt.-%, remainder: Fe2O3 and Al2O3 in a quantity ratio range of Fe2O3 to Al2O3 between 80 to 20 and 40 to 60 wt.-%, the respective mixed crystals having an Fe2O3 and Al2O3 content in a solid solution, starting from an MgO content between 12 and 19.5 wt.-%, from the limited ranges indicated for each case, to obtain 100% in the total composition. The invention also relates to a method for producing said elasticizing granulate and to the use of the same.

BRIQUES ET MATIERES REFRACTAIRES EN CHROME-MAGNESIE ET PROCEDES POUR LEUR PREPARATION

LES BRIQUES ET LES MATIERES REFRACTAIRES EN CHROME-MAGNESIE SELON L'INVENTION SONT ELABOREES A PARTIR D'UNE MATIERE DE COULEE EN GRAINS AYANT UNE TENEUR DE 71 A 82 EN POIDS DE CRO ET DE 16 A 28 EN POIDS DE MGO, LA TENEUR MINIMALE DE CRO ET DE MGO REPRESENTANT AU TOTAL AU MOINS 94 EN POIDS. CES MATIERES DE COULEE ELLES-MEMES SONT OBTENUES PAR FUSION DE 71 A 83 EN POIDS D'UN OXYDE DE CHROME OU DE SUBSTANCE FOURNISSANT UN OXYDE DE CHROME DE 17 A 29 DE MAGNESIE OU DE SUBSTANCE FOURNISSANT DE LA MAGNESIE A LA FUSION SUIVIE DE BROYAGE. LES BRIQUES ET MATIERES OBTENUES CONVIENNENT NOTAMMENT COMME REVETEMENT REFRACTAIRE.

Shape parts of refractory advanced

ОГНЕУПОРНОЕ СПЕЧЕННОЕ ИЗДЕЛИЕ, СЫРЬЕВОЙ МАТЕРИАЛ, ШИХТА И СПОСОБ ДЛЯ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение относится к производству огнеупорных изделий с использованием сырья в виде магнезитохромитовых зерен. Зерна для изготовления спеченного огнеупорного изделия содержат плавленое магнезитохромитовое ядро, причем поверхность упомянутого магнезитохромитового ядра имеет по меньшей мере частичное покрытие, содержащее оксид хрома толщиной по меньшей мере 10 мкм. Огнеупорное спеченное изделие содержит 30-80 мас.% MgO и 4-36 мас.% Cr2O3, при этом оно содержит магнезитохромитовые зёрна и по меньшей мере некоторые из этих зерен окружены оболочкой, содержащей пикрохромит. Технический результат – повышение коррозионной стойкости, уменьшение модуля упругости огнеупорных изделий, обеспечивающее улучшение их стойкости к термическому удару. 4 н. и 7 з.п. ф-лы, 1 ил., 5 пр.

SPINELL-FORMING COMPOSITION AND THE USE THEREOF

MAGNESIUM ALUMINATE SPINEL BONDED REFRACTORY AND METHOD OF MAKING

Refractory matter

Refractory composition

A refractory composition intended especially for the production of refractory shaped articles. It will find its use especially in the field of iron and steel metallurgy, for example for withstanding specific service temperatures T. According to the invention the refractory composition comprises: - a first electrically fused refractory ore whose sintering point and melting point are higher than the service temperature T, - a second electrically fused refractory ore whose melting point is higher than the service temperature T but whose sintering point corresponds substantially to the service temperature T, - a chemical binder which makes it possible to obtain a cohesion of the said composition until the sintering of the said second electrically fused refractory ore and which will provide the heat relay. r

Partial basic monolithic lining for vac - uum degassing vessel

BURNED BASIC REFRACTORY AND BATCH THEREFOR

PROCESS OF PRODUCING REFRACTORY MAGNESIA-CHROME BRICKS AND COMPOSITIONS

... 1386013 Refractory linings OSTERREICHISCH-AMERIKANISCHE MAGNESIT AG 2 May 1972 [7 May 1971] 20466/72 Heading ClJ [Also in Division F4] Linings in degasifying vessels and in converters for the oxygen-argon process (Jocelyn process) consist of magnesia-chrome bricks formed from a granulated, fused material which contains 10-35 wt. per cent Cr 2 O 3 , up to 4À5 wt. per cent CaO + SiO 2 and has a Cr 2 O 2 : Fe 2 O 3 ratio of at least 3À0. The material may be obtained by fusing a mixture of MgO or precursor thereof with chrome ore with or without added Cr 2 O 3 or CrO 3 , either under non-reducing or reducing conditions (in which latter case, resulting metallic iron is removed magnetically). Manganese and aluminium oxides are stated to be present as impurities. In one embodiment, up to 10 wt. per cent of finely-ground Cr 2 O 3 or CrO 3 is added to the fused material.

REFRACTORY LINING FOR A PIG IRON CONTAINER

REFRACTORY LINING FOR A PIG IRON CONTAINER

A refractory lining for a vessel holding pig iron comprises magnesite-chromite bricks containing from 15-30%, by weight, of chromic oxide. The chromite is so highly dissolved in the brick mass that it has no more than a 12% by volume, residue of chromite.

Improvements with the refractory matters

REFRACTORY BRICK LINING OF FIXED OR MOBILE CONTAINERS INTEND TO TAP IRON

Composition refractaire

La presente invention est relative a une composition refractaire notamment destinee a la realisation de pieces de forme refractaires. Elle trouvera notamment son utilisation dans le domaine de la siderurgie par exemple pour resister a des temperatures d'utilisation T specifique. Selon l'invention, la composition refractaire comprend : - un premier minerai refractaire electrofondu, dont le point de frittage et le point de fusion sont superieurs a la temperature d'utilisation T, - un deuxieme minerai refractaire electrofondu, dont le point de fusion est superieur a la temperature d'utilisation T mais dont le point de frittage correspond sensiblement a la temperature d'utilisation T, - un liant chimique qui permet d'obtenir une cohesion de ladite composition jusqu'au frittage dudit deuxieme minerai refractaire electrofondu et qui assurera le relais thermique.

PROCESS OF PRODUCING REFRACTORY MAGNESIA-CHROME BRICKS AND COMPOSITIONS

FEUERFESTE ZUSAMMENSETZUNG ENTHALTEND ELEKTRISCH GESCHMOLZENES MAGNESIUMOXID MIT GERINGEM SILICIUMDIOXID-ANTEIL UND DARAUS HERGESTELLTE PRODUKT

Refractory mortar compositions

A firebrick mortar is disclosed which is composed of 75-95 wt.% cofused chromia-magnesia spinel grain, 6-12 wt.% fine chromium oxide, 0-5 wt.% fine periclase, and 1-10 wt.% ball clay, bentonite or kaolin; sufficient organic plasticizer is added to give the mortar the desired plasticity in conjunction with an amount of water to bring the mixture to a consistency suitable for dipping or trowel, whichever is desired.

REFRACTORY CHROME-MAGNESIA BRICKS AND COMPOSITIONS

MAGNESIUM ALUMINATE SPINEL BONDED REFRACTORY

FIRED BRICK

The invention relates to fired, refractory ceramic brick manufactures from a MgO matrix component and up to 8.0 wt % of chromium oxide (Cr2O3) in a grading fraction <4 mm but > 0.1 mm.

REFRACTORY BODIES FOR CORROSIVE ENVIRONMENTS

BATCH FOR MANUFACTURING A REFRACTORY CERAMIC PRODUCT, METHOD FOR APPLYING A GUNNING MASS OR CASTING MASS ONTO A SURFACE, METHOD FOR MANUFACTURING A REFRACTORY CERAMIC PRODUCT, A REFRACTORY CERAMIC PRODUCT, AND THE USE OF A BATCH

The invention relates to a batch composition for producing a fireproof ceramic product, to a method for applying a gunning or casting mass to a surface, to a method for producing a fireproof ceramic product, to a fireproof ceramic product, and to the use of a batch composition.

REBONDED FUSED BRICK

... 13 A rebonded, fused brick resulting from burning a mix consisting essentially of a fused magnesite chrome grain, a fused chrome-magnesite grain or mixtures thereof, and a chrome ore having a Cr2O3/(Al2O3+Fe2O3) ratio of at least about 1.15, a maximum silica content of about 3.05, and an Fe2O3 content of less than about 25% by weight.

BURNED BASIC REFRACTORY AND BATCH THEREFOR

Method for the preparation of a basic refractory substance

REFRACTORY CHROMIUM-MAGNESIA BRICKS AND MATTERS AND PROCESSES FOR THEIR PREPARATION

LES BRIQUES ET LES MATIERES REFRACTAIRES EN CHROME-MAGNESIE SELON L'INVENTION SONT ELABOREES A PARTIR D'UNE MATIERE DE COULEE EN GRAINS AYANT UNE TENEUR DE 71 A 82 EN POIDS DE CRO ET DE 16 A 28 EN POIDS DE MGO, LA TENEUR MINIMALE DE CRO ET DE MGO REPRESENTANT AU TOTAL AU MOINS 94 EN POIDS. CES MATIERES DE COULEE ELLES-MEMES SONT OBTENUES PAR FUSION DE 71 A 83 EN POIDS D'UN OXYDE DE CHROME OU DE SUBSTANCE FOURNISSANT UN OXYDE DE CHROME DE 17 A 29 DE MAGNESIE OU DE SUBSTANCE FOURNISSANT DE LA MAGNESIE A LA FUSION SUIVIE DE BROYAGE. LES BRIQUES ET MATIERES OBTENUES CONVIENNENT NOTAMMENT COMME REVETEMENT REFRACTAIRE. THE BRICKS AND REFRACTORY MATERIALS OF CHROME-MAGNESIA ACCORDING TO THE INVENTION ARE MADE FROM A GRAINY CASTING MATERIAL HAVING A CONTENT OF 71 TO 82 BY WEIGHT OF CRO AND FROM 16 TO 28 BY WEIGHT OF MGO, THE MINIMUM CONTENT OF CRO AND MGO REPRESENTING IN TOTAL AT LEAST 94 BY WEIGHT. THESE CASTING MATERIALS THEY ARE OBTAINED BY FUSION OF 71 TO 83 BY WEIGHT OF A CHROME OXIDE OR OF A SUBSTANCE PROVIDING A 17 TO 29 OF CHROME OXIDE OF MAGNESIA OR OF A SUBSTANCE PROVIDING MAGNESIA AT THE FUSION FOLLOWED BY GRINDING . THE BRICKS AND MATERIALS OBTAINED ARE SUITABLE IN PARTICULAR AS A REFRACTORY COATING.

Rebonded fused brick

A rebonded, fused brick resulting from burning a mix consisting essentially of a fused magnesite chrome grain, a fused chrome-magnesite grain or mixtures thereof, and a chrome ore having a Cr2O3/(Al2O3+Fe2O3) ratio of at least about 1.15, a maximum silica content of about 3.85, and an Fe2O3 content of less than about 25% by weight.

Refractory

A composition of fused cast refractory particles comprises at least 40% MgO by weight and at least one other ingredient from the following: (i) up to 30% FeO, CaO, BaO, SrO or mixture thereof; (ii) up to 58% Cr2O3; (iii) up to 40% Al2O3; (iv) up to 18% TiO2; (v) up to 5% SiO2; (vi) up to 7% F, where the sum of the MgO plus other ingredients constitute at least 95% of the particles by weight. According to the invention the mixture comprises by weight 40-70% coarse, 0-20% medium and 20-50% fine particles, each range having a specified cumulative particle size distribution. The particle composition of the invention may be mixed with a waxy polyethylene glycol and a lignin sulphite binder, pressed and fired to produce a burned refractory article, or moulded with a bonding agent (e.g. H2SO4, MgSO4, NaHSO4, sulphite liquors, HCl, MgCl2, chromic acid, sodium chromates, sodium silicate, quick-setting cements, dextrin, starch, sugar, linseed oil, pitch, tar and tall oil) and optionally a humectant ...

REFRACTORY MORTAR COMPOSITIONS

Improvements relating to refractory bodies

Refractory bodies particularly useful as steel furnace linings comprise (A) 44-78% fused void -free refractory grains of diameter 0.9-19 mm. analysing more than 50% MgO and less than 50% of a mixture of iron and chromium oxides, each of the latter in an amount at least 5% of the fused grains, and (B) 56-22% of a homogeneous porous bonding phase having a porosity of 15-40% and analysing 35-65% magnesium aluminate spinel (MgO.Al2O3), 0-65% magnesia, and 0-55% of chromia, all by weight. The preferred total analysis of the bodies is 8-30% Al2O3, 60-87% MgO and 5-48% each FeO and G2O3. The bodies are produced by mixing (A) 4-15% aluminium particles with (B) 15-46% of a filler refractory of about - 30 mesh (U.S.S.) containing chromia and at least 25% MgO and (C) 50-81% fused refractory grains of diameter 0.1-19 mm. analysing as in product constituent (A) above, shaping, and firing at 600 DEG C. at least to oxidize the aluminium. The mixture may be shaped with water or an organic liquid and with ...

REFRACTORY BODIES FOR CORROSIVE ENVIRONMENTS

ABSTRACT The gasification of coal can be accomplished more efficiently if it is operated at a temperature high enough so that the mineral constituents of the coal will form a molten slag which can be continuously removed from the gasifier during operation. Proper control of such a process requires careful temperature control, but the molten coal slag has been found to be corrosive to most thermocouple materials and to conventional refractory ceramics which are used as thermocouple protection tubes in other environments. It has now been found that magnesium chromite serves satisfactorily as a corrosion resistant refractory material in molten coal slags, and that thermocouple protection tubes of this material can be made by isostatic pressing of granular magnesium chromite and subsequent firing.

COMPOSITIONS REFRACTAIRES NON FACONNEES A BASE DE GRAINS D'OXYDES BASIQUES FONDUS ET COULES, ET ARTICLES REFRACTAIRES FABRIQUES A PARTIR DE CES COMPOSITIONS

L'INVENTION SE RAPPORTE AUX MATERIAUX REFRACTAIRES. ELLE CONCERNE UNE COMPOSITION REFRACTAIRE NON FACONNEE, QUI COMPREND, EN POIDS, (A) 49-99 DE PARTICULES D'UN MATERIAU REFRACTAIRE FONDU ET COULE DONT LA COMPOSITION EST: 45-78 MGO, 0-30 CRO, 0-35 ALO, 0-17 FEO ETOU FEO AVEC AU MOINS 82 DE MGO CRO ALO FEO FEO, 1-8SIO, 0-2CAO BAO SRO, 0-10TIO ET 0-3F; (B) 0,5-5 D'UN LIANT HYDRAULIQUE; (C) 0,5-15 DE SILICE VITREUSE ETOU DE CRO FINEMENT DIVISE; (D) 0-50 DE GRAINS DE CHROMITE ETOU MAGNESIE; (E) 0,01-1 D'UN AGENT TENSIO-ACTIF; ET (F) 0-4 D'AGRAFES METALLIQUES. UTILISATION NOTAMMENT EN SIDERURGIE POUR LA FABRICATION DE CHENAUX DE COULEE DE L'ACIER.

REFRACTORY BRICK LINING OF FIXED OR MOBILE CONTAINERS INTEND TO TAP IRON

BURNED BASIC REFRACTORY AND BATCH THEREFOR

Improvements brought to refractory materials containing molten magnesia and their manufactoring processes

FEEDSTOCK FOR THE PRODUCTION OF BASIC REFRACTORY BODY COOKED AND REFRACTORY BODY PRODUCED FROM SAID LOAD

FEUERFESTE AUSKLEIDUNG VON STATIONAEREN ODER BEWEGLICHEN GEFAESSEN ZUR AUFNAHME VON ROHEISEN

MAGNESIUM ALUMINATE SPINEL BONDED REFRACTORY

MAGNESIUM ALUMINATE SPINEL BONDED REFRACTORY AND METHOD OF MAKING

... : A magnesium aluminate spinel-bonded refractory can be formed which does not exhibit undue expansion (due to the reaction of magnesia and alumina to form magnesium aluminate spinel) between the raw, compacted state and the fired, ceramically bonded state when fired to a temperature of 1400.degree.C if a very finely divided alumina with dense particles is used. More specifically, the alumina used has an average particle size of less than 5, preferably less than 2, microns, and a specific surface of less than 30 m2/g, preferably about 5 m2/g (i.e., the small crystallites or particles are dense and do not have a high surface area, as do finely divided active aluminas).

Refractory bodies and their manufactoring process

BURNED BASIC REFRACTORY AND BATCH THEREFOR

조대(coarse)-세라믹 내화성 산물의 탄성화에 적합한 내화성 스피넬 입자, 그의 제조 방법 및 용도

... 본 발명은 내화성 산물, 구체적으로 염기성 내화성 산물을 위한, 입상, 내화성 무기물 탄성화 입자에 관한 것으로서, 무기물은 MgO: 12 내지 19.5 구체적으로 15 내지 17 중량%, 나머지: Fe2O3와 Al2O3가 80:20 내지 40:60 중량% 함량 비 범위의 Fe2O3와 Al2O3인 조성 범위이고, 총 조성이 100%가 되도록, 12 내지 19.5 중량%의 MgO 함량을 기준으로, 개별적인 혼합 결정은 각각의 주어진 범위에서 고용체 중 Fe2O3와 Al2O3의 함량을 갖는 것인 3원계 MgO-Fe2O3-Al2O3의 단일-상 용융 스피넬 혼합 결정 또는 다중-상 용융 산물의 무기물로 이루어진 탄성화 입자에 관한 것이다. 또한, 본 발명은 탄성화 입자의 제조 방법 및 그의 용도에 관한 것이다.

Refractory chrome-magnesia bricks and compositions made from granular fused material

Refractory chrome-magnesia bricks and compositions composed of a granular fused material having a grain size of 12 mm or less, and a content of from 71 to 83 wt. % Cr2O3 and from 17 to 29 wt. % MgO, the minimum content of Cr2O3 and MgO being 94 wt. %.

CHROMIA-MAGNESIA RAMMING CEMENT

ABSTRACT A raw batch for a ramming cement is shown adapted to be fired in place to protect studded boiler tubes and the like. The fired cement includes a major proportion of a particulate chromia-magnesia spinel that is bonded in-situ with a clay phase including kaolinite and montmorillonite components and a reacted chromia and magnesia compound together with sodium hexametaphosphate.

CHROMIA-MAGNESIA RAMMING CEMENT

NONWORKED REFRACTORY COMPOSITIONS CONTAINING BASIC MELTED OXIDE GRAINS AND RUN, AND REFRACTORY ARTICLES FACTORIES FROM THESE COMPOSITIONS

L'INVENTION SE RAPPORTE AUX MATERIAUX REFRACTAIRES. ELLE CONCERNE UNE COMPOSITION REFRACTAIRE NON FACONNEE, QUI COMPREND, EN POIDS, (A) 49-99 DE PARTICULES D'UN MATERIAU REFRACTAIRE FONDU ET COULE DONT LA COMPOSITION EST: 45-78 MGO, 0-30 CRO, 0-35 ALO, 0-17 FEO ETOU FEO AVEC AU MOINS 82 DE MGO CRO ALO FEO FEO, 1-8SIO, 0-2CAO BAO SRO, 0-10TIO ET 0-3F; (B) 0,5-5 D'UN LIANT HYDRAULIQUE; (C) 0,5-15 DE SILICE VITREUSE ETOU DE CRO FINEMENT DIVISE; (D) 0-50 DE GRAINS DE CHROMITE ETOU MAGNESIE; (E) 0,01-1 D'UN AGENT TENSIO-ACTIF; ET (F) 0-4 D'AGRAFES METALLIQUES. UTILISATION NOTAMMENT EN SIDERURGIE POUR LA FABRICATION DE CHENAUX DE COULEE DE L'ACIER. THE INVENTION RELATES TO REFRACTORY MATERIALS. IT CONCERNS AN UNFACTORED REFRACTORY COMPOSITION, WHICH INCLUDES, BY WEIGHT, (A) 49-99 PARTICLES OF A MELTED AND CAST REFRACTORY MATERIAL WHOSE COMPOSITION IS: 45-78 MGO, 0-30 CRO, 0-35 ALO, 0-17 FEO ETOU FEO WITH AT LEAST 82 DE MGO CRO ALO FEO FEO, 1-8SIO, 0-2CAO BAO SRO, 0-10TIO AND 0-3F; (B) 0.5-5 OF A HYDRAULIC BINDER; (C) 0.5-15 OF VITREOUS OR FINE-DIVIDED CROWN SILICA; (D) 0-50 GRAINS OF CHROMITE AND OR MAGNESIA; (E) 0.01-1 OF A SURFACTANT; AND (F) 0-4 METAL STAPLES. USE ESPECIALLY IN STEEL-CASTING FOR THE MANUFACTURE OF STEEL CASTING CHANNELS.

BURNED BASIC REFRACTORY AND BATCH THEREFOR

BURNED BASIC REFRACTORY AND BATCH THEREFOR

REFRACTORY COMPOSITION OF MORTAR

LA COMPOSITION EST CONSTITUEE ESSENTIELLEMENT D'UN MELANGE DE 75 A 95 EN POIDS DE GRAINS D'OXYDE DE CHROME-MAGNESIE COFUSIONNES; 1 A 10 EN POIDS D'UN PLASTIFIANT REFRACTAIRE PULVERULENT CHOISI ENTRE L'ARGILE FIGULINE, LA BENTONITE, LE KAOLIN ET LEURS MELANGES; DE 6 A 12 EN POIDS D'UNE SOURCE D'OXYDE DE CHROME FINEMENT DIVISE EN PARTICULES; ET 0 A 5 EN POIDS D'UNE SOURCE DE MAGNESIE FINEMENT DIVISEE EN PARTICULES.

ANSATZ ZUR HERSTELLUNG VON FEUERFESTEM KERAMISCHEM MATERIAL AUS SCHMELZKORNMATERIAL

Verfahren zur Herstellung von feuerfesten Ziegeln

Keramisches Material

Zur Elastifizierung von grobkeramischen Feuerfesterzeugnissen geeignetes feuerfestes Spinellgranulat, Verfahren zu dessen Herstellung, Feuerfesterzeugnis mit dem Spinellgranulat, Verwendung des Feuerfesterzeugnisses, Auskleidung eines Industrieofens mit dem Feuerfesterzeugnis

Körniges feuerfestes mineralisches Elastifizierergranulat für Feuerfesterzeugnisse, insbesondere für basische Feuerfesterzeugnisse, mineralisch bestehend jeweils aus einem monophasigen Schmelzspinellmischkristall oder mehrphasigen Schmelzprodukt des Dreistoffsystems MgO-FeO-AlOaus dem ZusammensetzungsbereichMgO: 12 bis 19,5, insbesondere 15 bis 17 Gew.-%Rest: FeOund AlOim Mengenverhältnisbereich FeOzu AlOzwischen 80 zu 20 und 40 zu 60 Gew.-%wobei ausgehend von einem MgO-Gehalt zwischen 12 bis 19,5 Gew.-% die jeweiligen Mischkristalle jeweils einen FeO- und AlO-Gehalt in fester Lösung aus den dafür jeweils angegebenen begrenzten Bereichen derart enthalten, dass sich eine Gesamtzusammensetzung zu 100 % ergibt.

FEUERFESTE AUSKLEIDUNG VON STATIONAEREN ODER BEWEGLICHEN GEFAESSEN ZUR AUFNAHME VON ROHEISEN

BURNED BASIC REFRACTORY AND BATCH THEREFOR

... 1386825 Refractories CORHART REFRACTORIES CO 3 March 1972 [3 March 1971] 10086/72 Heading ClJ A batch for producing refractories consists of chromite grain containing less than 4% SiO 2 , dead burned MgCo 3 and fused grain composed of chromite and analysing 40-58% MgO; 10- 35% being a chromite fraction - 10 + 150 Tyler; 25-60% being a coarse fraction - 4 + 20 Tyler composed of 5% to less than 20% of the fused grain and more than 5% but not more than 40% of the magnesite; 0-30% being an intermediate fraction - 10 + 35 Tyler and composed of at least one of the fused grain and magnesite; 15-60% being a fine fraction - 35 Tyler composed of, relative to the whole batch, 10-40% of magnesite and 0-50 fused grain, and 4 to less than 50% of the batch being + 28 Tyler of at least one of chromite and magnesite.

BURNED BASIC REFRACTORY AND BATCH THEREFOR

... 1286395 Chrome-magnesia refractories CORHART REFRACTORIES CO 21 April 1970 [21 April 1969] 18910/70 Heading C1J A refractory batch consists of a mixture of a chemical grade chromite grain containing less than 4% SiO 2 , dead-burned magnesite grain, and fused grain composed of a melted and resolidified mixture of chemical grade chromite and dead burned magnesite and analysing 53- 58% by weight MgO on an oxide basis, wherein of the batch 10 to 35 wt. per cent is a chromite fraction whose particles are substantially all - 10 + 150 mesh (Tyler) and composed of the chromite grain, 30-60% is a coarse fraction whose particles are substantially all -4+20 mesh and composed of, based on the whole batch, 20- 60% of the fused grain and 0 to 40% of the magnesite grain, 0 to 30% is an intermediate fraction whose particles are substantially all -10+35 mesh and composed of the fused grain and/or the magnesite grain, 25 to 60% is a fine fraction whose particles are - 35 mesh and composed of, based on the ...

COMPOSICAO DE FORMACAO DE ESPINELIO

BATCH FOR MANUFACTURING A REFRACTORY CERAMIC PRODUCT, METHOD FOR APPLYING A GUNNING MASS OR CASTING MASS ONTO A SURFACE, METHOD FOR MANUFACTURING A REFRACTORY CERAMIC PRODUCT, A REFRACTORY CERAMIC PRODUCT, AND THE USE OF A BATCH

The invention concerns a batch for manufacturing a refractory ceramic product, a method for applying a gunning mass or casting mass to a surface, a method for manufacturing a refractory ceramic product, a refractory ceramic product as well as the use of a batch. 1. A batch for manufacturing a refractory ceramic product , comprising the following components in the following proportions by weight , respectively with respect to the total weight of the product:50% to 99.5% by weight of fused magnesia;0 to 50% by weight of sintered magnesia;{'sub': 2', '3, '0.5% to 5% by weight of a chromium oxide component in the form of at least one raw material based on CrO; wherein'}at least 90% by weight of the chromium oxide component has a grain size of at most 50 μm, with respect to the total weight of the chromium oxide component.2. The batch as claimed in claim 1 , wherein at least 90% by weight of the fused magnesia has a maximum grain size of 5.0 mm with respect to the total weight of the fused magnesia.3. The batch as claimed in claim 1 , with a chromium oxide component in the form of at least one of the following chromium oxide raw materials: ultrapure synthetic chromium oxide raw material or chromium oxide raw material with a proportion of CrOof at least 90% by weight with respect to the chromium oxide raw material.4. A method comprising: 50% to 99.5% by weight of fused magnesia;', '0 to 50% by weight of sintered magnesia;', {'sub': 2', '3, '0.5% to 5% by weight of a chromium oxide component in the form of at least one raw material based on CrO; wherein'}, 'at least 90% by weight of the chromium oxide component has a grain size of at most 50 μm, with respect to the total weight of the chromium oxide component; and, 'providing a batch, wherein the batch comprises the following components in the following proportions by weight, respectively with respect to the total weight of the productapplying the batch to a surface.5. A method for manufacturing a refractory ceramic ...

SPINEL REFRACTORY GRANULATES WHICH ARE SUITABLE FOR ELASTICIZING HEAVY-CLAY REFRACTORY PRODUCTS, METHOD FOR THEIR PRODUCTION AND USE THEREOF

The invention relates to a granular, refractory mineral elasticizing granulate for refractory products, in particular for basic refractory products. The minerals consist of mono-phased fused spinel mixed crystal or multi-phased fusion products of the ternary system MgO−FeO—AlOof the composition range 1. A granular , refractory mineral elasticizing granulate for refractory products , the elasticizing granulate comprising a ternary system MgO—FeO—AlOas a mono-phased fused spinel mixed crystal or a multi-phased fused product , the ternary system MgO—FeO—AlOhaving a composition with the following range:MgO: 12 to 19.5 wt.- %,{'sub': 2', '3', '2', '3', '2', '3', '2', '3, 'Remainder: FeOand AlOin a quantity ratio range of FeOto AlObetween 80 to 20 and 40 to 60 wt.- %,'}{'sub': 2', '3', '2', '3, 'wherein starting from an MgO content between 12 and 19.5 wt.- %, the mixed crystal having an FeOand AlOcontent in solid solution out of the limited ranges respectively indicated thereof, such that a total composition of 100% is obtained.'}2. The elasticizing granulate according to claim 1 , wherein the elasticizing granulate has a bulk density of ≤3.5 claim 1 , measured according to DIN EN 993-18.3. The elasticizing granulate according to claim 1 , wherein the elasticizing granulate has less than 15 wt- % of secondary phases.4. The elasticizing granulate according to claim 1 , wherein the elasticizing granulate has a grain compressive strength between 30 MPa and 50 MPa claim 1 , measured with reference to DIN EN 13005.5. The elasticizing granulate according to claim 1 , wherein the elasticizing granulate has a linear coefficient of expansion between 8.5 and 9.5·10−6 K−1.6. The elasticizing granulate according to claim 1 , wherein the elasticizing granulate has grain sizes between 0 and 6 mm claim 1 , with the following grain distributions under Gaussian grain distributions:0.5-1.0 mm 30-40 wt.- %1.0-2.0 mm 50-60 wt.- %.7. A method for producing the mono-phased elasticizing ...

Refractory spinel particles suitable for elastifying coarse ceramic refractory articles, method for the production thereof and use thereof

本发明涉及一种用于耐火制品，特别是用于碱性耐火制品的粒状的耐火矿物弹性化颗粒，在矿物上分别由来自以下组成范围的三元系MgO‑Fe 2 O 3 ‑Al 2 O 3 的单相熔化尖晶石混晶或多相熔化产物组成：MgO：12至19.5重量％，特别是15至17重量％，余量：Fe 2 O 3 /Al 2 O 3 的量比范围在80重量％/20重量％和40重量％/60重量％之间的Fe 2 O 3 和Al 2 O 3 ，其中，基于在12和19.5重量％之间的MgO含量，各混晶在由为此分别给出的限定范围构成的固溶体中分别如此地具有Fe 2 O 3 和Al 2 O 3 含量，使得得到100％的总组成。本发明此外涉及一种用于制备所述弹性化颗粒的方法以及它的用途。

Refractory article and use

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Spinel-forming composition and its use.

The composition in the ternary MgO-Al2O3-Cr2O3 system is located within the Figure A' -A" -B" -B', with A' = 53% by weight of MgO, 44% by weight of Al2O3 and 3% by weight of Cr2O3, A" = 21% by weight of MgO, 76% by weight of Al2O3 and 3% by weight of Cr2O3, B" = 19.5% by weight of MgO, 60.5% by weight of Al2O3 and 20% by weight of Cr2O3, and B' = 49% by weight of MgO, 31% by weight of Al2O3 and 20% by weight of Cr2O3, and the use thereof as additive in magnesia bricks. c

Spinel-forming composition and the use thereof

Spinel-forming composition and its use

The composition in the ternary MgO-Al2O3-Cr2O3 system is located within the Figure A' -A" -B" -B', with A' = 53% by weight of MgO, 44% by weight of Al2O3 and 3% by weight of Cr2O3, A" = 21% by weight of MgO, 76% by weight of Al2O3 and 3% by weight of Cr2O3, B" = 19.5% by weight of MgO, 60.5% by weight of Al2O3 and 20% by weight of Cr2O3, and B' = 49% by weight of MgO, 31% by weight of Al2O3 and 20% by weight of Cr2O3, and the use thereof as additive in magnesia bricks. c

FIREPROOF MORTAR

Particles for the manufacture of sintered refractory articles, batches for the manufacture of sintered refractory articles, processes for the manufacture of sintered refractory articles and sintered refractory articles

소결된 내화 제품의 제조를 위한 입자, 여기서 상기 입자는 마그네시아-크로마이트의 코어를 포함하고, 여기서 상기 마그네시아-크로마이트의 코어의 표면은 적어도 부분적으로 산화 크롬 포함 코팅을 갖는다.

FIRE-RESISTANT LINING FOR STATIONARY OR MOVABLE VESSELS FOR THE ACCESSION OF CRUDE IRON.

Spinel refractory granulates which are suitable for elasticizing heavy-clay refractory products, method for their production and use thereof.

La invención se refiere a un granulado de elastificación mineral refractario granuloso para productos refractarios, en particular para productos refractarios básicos, que se compone en lo mineral en cada caso de un cristal mixto de espinela fundida monofásico o un producto fundido multifásico del sistema ternario MgO-Fe2O3-Al2O3 del intervalo de composición MgO: del 12 al 19,5, en particular del 15 al 17 % en peso, resto: Fe2O3 y Al2O3 en el intervalo de relación cuantitativa de Fe2O3 a AI2O3 de entre el 80 al 20 y el 40 al 60 % en peso, en donde, partiendo de un contenido de MgO de entre el 12 y el 19,5 % en peso, los respectivos cristales mixtos tienen en cada caso un contenido de Fe2O3 y Al2O3 en solución sólida dentro de los intervalos limitados indicados en cada caso para ello, de tal modo que se da una composición total del 100 %. La invención se refiere además a un procedimiento para la fabricación del granulado de elastificación así como a su uso.

Refractory containing low silica magnesia clinker and products using this refractory

본 발명은 고온, 산화분위기 조건하에서도 슬러그 분해에 대해 안정적이며 철 함유량이 높은 슬러그에 대해서도 우수한 내식성을 나타내는 고순도 전융마그네시아 클링카로 이루어진 내화재와, 이 내식성이 우수한 전용 마그네시아 클링카를 사용하여 내식성과 함께 내스폴링성도 우수한 소성 혹은 불소성 연와를 제공한다. MgO 함유량이 98.0~99.8중량% 이고, SiO z 함유량이 0.05중량% 이하이며, CaO 함유량이 0.1~2.0 중량%인 전융마그네시아 클링카로 이루어진 내화재료이며, 이를 10중량% 이상 함유시켜 소성, 불소성 혹은 부정형 내화물을 얻는다.

Articles refractaires basiques cuits et charges de depart pour leur fabrication

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一种低成本、长寿命中间包渣线干式料

本发明公开了一种低成本、长寿命中间包渣线干式料，涉及耐火材料领域，其原料组份质量百分比为：5‑3mm的镁碳砖颗粒为13～15%，3‑1mm的94电熔镁砂为27～29%，1‑0mm的95电熔镁砂为22～24%，200目的96.3电熔镁砂为16～18%，325目的镁铬砖粉为6～7%，200目的87矾土为2～3%，酚醛树脂为3～4%，硼砂为0.1～0.3%，余量为8‑5mm的镁碳砖颗粒，用于T型方坯中间包工作层渣线部位。本发明制备的干式料具备优异的抗侵蚀性能，且相对成本较低，在T型方坯中间包上使用寿命超过60h，使用寿命长。

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Feuerfestes Material

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Material zur Herstellung von feuerfesten Formkörpern

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Feuerfeste zusammensetzung enthaltend elektrisch geschmolzenes magnesiumoxid mit geringem siliciumdioxid-anteil und daraus hergestellte produkt

Material zur herstellung von feuerfesten formkoerpern

Feuerfeste Gegenstände

一种低成本、长寿命中间包渣线干式料

本发明公开了一种低成本、长寿命中间包渣线干式料，涉及耐火材料领域，其原料组份质量百分比为：5‑3mm的镁碳砖颗粒为13～15%，3‑1mm的94电熔镁砂为27～29%，1‑0mm的95电熔镁砂为22～24%，200目的96.3电熔镁砂为16～18%，325目的镁铬砖粉为6～7%，200目的87矾土为2～3%，酚醛树脂为3～4%，硼砂为0.1～0.3%，余量为8‑5mm的镁碳砖颗粒，用于T型方坯中间包工作层渣线部位。本发明制备的干式料具备优异的抗侵蚀性能，且相对成本较低，在T型方坯中间包上使用寿命超过60h，使用寿命长。

Corpo refrattario basico combusto e carica relativa

Feuerfeste Gegenstände

用于生产烧结耐火产品的颗粒、用于生产烧结耐火产品的批料、用于生产烧结耐火产品的方法和烧结耐火产品

用于生产烧结耐火产品的颗粒，其中所述颗粒包含氧化镁‑铬铁矿核，其中所述氧化镁‑铬铁矿核的表面至少部分地具有包含氧化铬的涂层。

Charge de depart pour la fabrication de corps refractaires basiques cuits et corps refractaires obtenus a partir de cette charge

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一种镁质喷补料及其应用

本发明属于耐火材料领域，提供了一种镁质喷补料。本发明提供的镁质喷补料由特定组成和含量的组分构成，由于各组分的配合作用，能与炉体耐火材料紧密的粘结在一起，提高了粘结强度和附着率。本发明还提供了所述的喷补料在炉衬修补中的应用，在高温下镁质喷补料烧结致密性好，耐压强度和抗折强度高，热稳定性好，炉补效果明显。

一种介质滤波器、制备介质滤波器的方法及通信设备

本申请提供了一种介质滤波器、制备介质滤波器的方法及通信设备。该介质滤波器包括多个介质块及至少两个第一介质板，多个介质块彼此间隔设置，至少两个第一介质板依次设置于空间上相邻的两个介质块之间，以形成依次经过多个介质块的主耦合路径；其中，介质块和第一介质板一体烧结成型，相比于现有技术中多个介质块拼接成型的方式，取消了拼接工艺中所需的定位工艺及二次烧结工艺，降低了工艺复杂性，结构简单，适合大批量生产，且消除了定位过程中出现的尺寸误差而导致多个介质块的耦合窗口拼接精度不高的问题，提高了介质滤波器的稳定性及一致性。

一种冶炼超纯净钢用钢包复合材质渣线砖及其生产方法

一种冶炼超纯净钢用钢包复合材质渣线砖及其生产方法，是由下列重量份数的原料制备而成：1‑6mm 985大结晶镁砂粗颗粒35‑55份、0‑1mm 985大结晶镁砂或电熔镁铬砂细颗粒15‑20份、180目985大结晶镁砂或电熔镁铬砂细粉20‑35份、复合添加剂1.2‑4.2份、膨胀石墨0‑0.4份、复合碳源为3‑5份、200目金属铝粉2‑5份、液体树脂3‑4份、固体树脂粉0.2‑1份。本发明可提高镁碳砖对钢渣的抗侵蚀能力，最终生产出碳含量为5％‑8％的优质镁碳砖，具有与普通高碳镁碳砖一样优良的抗侵蚀性和抗渣性，满足冶炼超纯净钢对钢包渣线耐材的需要。

适用于使粗陶瓷耐火制品弹性化的耐火尖晶石颗粒，其制备方法和其用途

本发明涉及一种用于耐火制品，特别是用于碱性耐火制品的粒状的耐火矿物弹性化颗粒，在矿物上分别由来自以下组成范围的三元系MgO‑Fe 2 O 3 ‑Al 2 O 3 的单相熔化尖晶石混晶或多相熔化产物组成：MgO：12至19.5重量％，特别是15至17重量％，余量：Fe 2 O 3 /Al 2 O 3 的量比范围在80重量％/20重量％和40重量％/60重量％之间的Fe 2 O 3 和Al 2 O 3 ，其中，基于在12和19.5重量％之间的MgO含量，各混晶在由为此分别给出的限定范围构成的固溶体中分别如此地具有Fe 2 O 3 和Al 2 O 3 含量，使得得到100％的总组成。本发明此外涉及一种用于制备所述弹性化颗粒的方法以及它的用途。