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RU98113521A - METHOD FOR ALLOCATION OF ALUMINUM AND SILICA - Google Patents

METHOD FOR ALLOCATION OF ALUMINUM AND SILICA

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Publication number
RU98113521A
RU98113521A RU98113521/12A RU98113521A RU98113521A RU 98113521 A RU98113521 A RU 98113521A RU 98113521/12 A RU98113521/12 A RU 98113521/12A RU 98113521 A RU98113521 A RU 98113521A RU 98113521 A RU98113521 A RU 98113521A
Authority
RU
Russia
Prior art keywords
solution
cacl
alcl
specified
aluminosilicate
Prior art date
Application number
RU98113521/12A
Other languages
Russian (ru)
Other versions
RU2176984C2 (en
Inventor
Шломо Нехари
Чаноч Горин
Израиль Лин
Амос Беркович
Original Assignee
Мэшел Алюмина Индастриес Лтд.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IL11640995A external-priority patent/IL116409A/en
Application filed by Мэшел Алюмина Индастриес Лтд. filed Critical Мэшел Алюмина Индастриес Лтд.
Publication of RU98113521A publication Critical patent/RU98113521A/en
Application granted granted Critical
Publication of RU2176984C2 publication Critical patent/RU2176984C2/en

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Claims (13)

1. Способ для одновременного выделения существенно чистых глинозема и кремнезема из алюмосиликатов, включающий следующие стадии:
(i) нагревание указанного алюмосиликата с гидратированным CaCl2 для получения кальций-алюмо-силикатного и кальций-алюминатного продуктов, где указанный CaCl2 является, в основном, свободным от MgCl2;
(ii) выщелачивание указанных продуктов с помощью HCl с образованием раствора, содержащего AlCl3 и CaCl2, и нерастворимый кремнезем;
(iii) выделение указанного нерастворимого кремнезема из указанного раствора;
(iv) кристаллизация AlCl3 из указанного раствора и выделение указанного глинозема из указанного кристаллизованного AlCl3;
(v) удаление, в основном, MgCl2 из раствора CaCl2 стадии (iv); и
(vi) рециклизация раствора CaCl2 для использования на стадии (i).1. A method for the simultaneous separation of substantially pure alumina and silica from aluminosilicates, comprising the following steps:
(i) heating said aluminosilicate with hydrated CaCl 2 to obtain calcium aluminosilicate and calcium aluminate products, wherein said CaCl 2 is substantially free of MgCl 2 ;
(ii) leaching said products with HCl to form a solution containing AlCl 3 and CaCl 2 and insoluble silica;
(iii) recovering said insoluble silica from said solution;
(iv) crystallizing AlCl 3 from said solution and recovering said alumina from said crystallized AlCl 3 ;
(v) removing substantially MgCl 2 from the CaCl 2 solution of step (iv); and
(vi) recycling the CaCl 2 solution for use in step (i). 2. Способ по п. 1, где указанный алюмосиликат содержится в материале, выбранном из группы, включающей отходы угля, золу, каолин, сланец и глины. 2. The method of claim 1, wherein said aluminosilicate is contained in a material selected from the group consisting of coal waste, ash, kaolin, shale, and clay. 3. Способ по п. 1, где указанный CaCl2 добавляется к указанному алюмосиликату в весовом отношении 0,5:1-3:1.3. The method according to p. 1, where the specified CaCl 2 is added to the specified aluminosilicate in a weight ratio of 0.5: 1-3: 1. 4. Способ по п. 1, где указанный нерастворимый кремнезем выделяется из указанного раствора на стадии (iii) путем фильтрации. 4. The method of claim 1, wherein said insoluble silica is separated from said solution in step (iii) by filtration. 5. Способ по п. 1, где указанный нерастворимый кремнезем выделяется из указанного раствора на стадии (iii) путем декантации. 5. The method of claim 1, wherein said insoluble silica is separated from said solution in step (iii) by decantation. 6. Способ по п. 1, где указанный глинозем выделяется из указанного кристаллизованного AlCl3 на стадии (iv) путем гидролитического разложения.6. The method of claim 1, wherein said alumina is separated from said crystallized AlCl 3 in step (iv) by hydrolytic decomposition. 7. Способ по п. 1, где указанный Mg удаляется из указанной соли путем осаждения Ca(OH)2.7. The method of claim 1, wherein said Mg is removed from said salt by precipitation of Ca (OH) 2 . 8. Способ по п. 1, где указанная соль CaCl2, использованная на стадии (i), находится в форме рассола.8. The method of claim 1, wherein said CaCl 2 salt used in step (i) is in the form of a brine. 9. Способ по п. 1, где смесь алюмо-силиката и соли CaCl2 стадии (i) сушится при 200-250°С перед нагреванием.9. The method according to p. 1, where the mixture of aluminosilicate and CaCl 2 salt of stage (i) is dried at 200-250 ° C before heating. 10. Способ по п. 1, где указанное нагревание проводится при температуре 900-1300°С. 10. The method according to p. 1, where the specified heating is carried out at a temperature of 900-1300 ° C. 11. Способ по п. 10, где указанное нагревание проводится при температуре 1100-1220oС.11. The method according to p. 10, where the specified heating is carried out at a temperature of 1100-1220 o C. 12. Способ по п. 1, где Fe экстрагируется из указанного раствора AlCl3 стадии (ii) или путем ионного обмена или жидкостной экстракции до кристаллизации AlCl3 стадии (iv).12. The method according to p. 1, where Fe is extracted from the specified solution of AlCl 3 stage (ii) or by ion exchange or liquid extraction to crystallize AlCl 3 stage (iv). 13. Способ по п. 1, где Fe экстрагируется из указанного раствора AlCl3 стадии (ii) или путем ионного обмена или жидкостной экстракции после кристаллизации AlCl3 стадии (iv).13. The method according to p. 1, where Fe is extracted from the specified solution of AlCl 3 stage (ii) or by ion exchange or liquid extraction after crystallization of AlCl 3 stage (iv).
RU98113521/12A 1995-12-15 1996-12-12 Method of isolation of alumina and silica RU2176984C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL116409 1995-12-15
IL11640995A IL116409A (en) 1995-12-15 1995-12-15 Process for the recovery of alumina and silica

Publications (2)

Publication Number Publication Date
RU98113521A true RU98113521A (en) 2000-06-20
RU2176984C2 RU2176984C2 (en) 2001-12-20

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Country Status (17)

Country Link
US (1) US5993758A (en)
EP (1) EP0866769B1 (en)
JP (1) JP2000505034A (en)
KR (1) KR100421596B1 (en)
CN (1) CN1085622C (en)
AT (1) ATE182128T1 (en)
AU (1) AU713938B2 (en)
BR (1) BR9612010A (en)
CA (1) CA2240067A1 (en)
CZ (1) CZ184998A3 (en)
DE (1) DE69603289T2 (en)
ES (1) ES2134649T3 (en)
HU (1) HUP0001163A3 (en)
IL (1) IL116409A (en)
RU (1) RU2176984C2 (en)
WO (1) WO1997022554A1 (en)
ZA (1) ZA9610486B (en)

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