RU2013149809A - METHOD FOR EXTRACTION OF ALUMINUM OXIDE FROM RED Sludge - Google Patents
METHOD FOR EXTRACTION OF ALUMINUM OXIDE FROM RED Sludge Download PDFInfo
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- RU2013149809A RU2013149809A RU2013149809/05A RU2013149809A RU2013149809A RU 2013149809 A RU2013149809 A RU 2013149809A RU 2013149809/05 A RU2013149809/05 A RU 2013149809/05A RU 2013149809 A RU2013149809 A RU 2013149809A RU 2013149809 A RU2013149809 A RU 2013149809A
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- red mud
- solution
- extraction
- naoh
- ratio
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Способ извлечения оксида алюминия из красного шлама, включающий автоклавное выщелачивании красного шлама при повышенной температуре и давлении выше атмосферного в присутствии гидроксида кальция в щелочном растворе, отличающийся тем, что в исходный красный шлам вводят гидроксид кальция в количестве 2,5-5,0% от массы исходного шлама и 40%-ный раствор NaOH до получения соотношения Ж:Т=1,5÷2,8:1; после автоклавного выщелачивания полученную пульпу охлаждают до 80-120°C, затем добавляют 10%-ный раствор NaOH или воды до получения соотношения Ж:Т не менее 5:1 и выдерживают при перемешивании не менее 1 часа, после чего фильтруют.The method of extraction of alumina from red mud, including autoclave leaching of red mud at elevated temperature and pressure above atmospheric in the presence of calcium hydroxide in an alkaline solution, characterized in that 2.5 to 5.0% of calcium hydroxide is introduced into the original red mud the mass of the original sludge and a 40% solution of NaOH to obtain the ratio W: T = 1.5 ÷ 2.8: 1; after autoclave leaching, the resulting pulp is cooled to 80-120 ° C, then a 10% solution of NaOH or water is added to obtain a W: T ratio of at least 5: 1 and kept under stirring for at least 1 hour, and then filtered.
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RU2013149809/05A RU2561417C2 (en) | 2013-11-07 | 2013-11-07 | Method of extraction of aluminium oxide from red slime |
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RU2013149809/05A RU2561417C2 (en) | 2013-11-07 | 2013-11-07 | Method of extraction of aluminium oxide from red slime |
Publications (2)
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RU2013149809A true RU2013149809A (en) | 2015-05-20 |
RU2561417C2 RU2561417C2 (en) | 2015-08-27 |
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RU2013149809/05A RU2561417C2 (en) | 2013-11-07 | 2013-11-07 | Method of extraction of aluminium oxide from red slime |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2687470C1 (en) * | 2018-09-13 | 2019-05-13 | Федеральное государственное бюджетное учреждение науки Институт химии твердого тела Уральского отделения Российской академии наук | Method of extracting aluminum oxide from alumina production wastes |
RU2707223C1 (en) * | 2019-05-15 | 2019-11-25 | Федеральное государственное бюджетное учреждение науки Институт химии твердого тела Уральского отделения Российской академии наук | Bauxite processing method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2193525C1 (en) * | 2001-08-08 | 2002-11-27 | Общество с ограниченной ответственностью "АЛКОРУС ИНЖИНИРИНГ" | Method for hydrochemical processing of aluminosilicate stock |
RU2313490C1 (en) * | 2006-05-11 | 2007-12-27 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Method of processing of bauxites |
TW200909356A (en) * | 2007-07-09 | 2009-03-01 | Aditya Birla Sci & Tech Co Ltd | Extraction of alumina |
CN104520237B (en) * | 2012-03-29 | 2018-05-01 | 奥佰特氧化铝有限公司 | The method for handling flying dust |
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RU2561417C2 (en) | 2015-08-27 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20171108 |