RU2001117776A - The method of producing magnesium oxide from natural brines - Google Patents

The method of producing magnesium oxide from natural brines

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Publication number
RU2001117776A
RU2001117776A RU2001117776/12A RU2001117776A RU2001117776A RU 2001117776 A RU2001117776 A RU 2001117776A RU 2001117776/12 A RU2001117776/12 A RU 2001117776/12A RU 2001117776 A RU2001117776 A RU 2001117776A RU 2001117776 A RU2001117776 A RU 2001117776A
Authority
RU
Russia
Prior art keywords
cacl
limestone
dolomite
precipitate
magnesium oxide
Prior art date
Application number
RU2001117776/12A
Other languages
Russian (ru)
Other versions
RU2211803C2 (en
Inventor
Александр Дмитриевич Рябцев
Андрей Гельевич Вахромеев
Лариса Тимофеевна Менжерес
Елена Викторовна Мамылова
Наталья Павловна Коцупало
Original Assignee
Закрытое акционерное общество "Экостар-Наутех"
Filing date
Publication date
Application filed by Закрытое акционерное общество "Экостар-Наутех" filed Critical Закрытое акционерное общество "Экостар-Наутех"
Priority to RU2001117776A priority Critical patent/RU2211803C2/en
Priority claimed from RU2001117776A external-priority patent/RU2211803C2/en
Publication of RU2001117776A publication Critical patent/RU2001117776A/en
Application granted granted Critical
Publication of RU2211803C2 publication Critical patent/RU2211803C2/en

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Claims (3)

1. Способ получения оксида магния из рассолов с содержанием CaCl2 до 60,0 г/л, включающий обработку их известковым молоком, полученным после обжига доломита, известняка, сгущение пульпы в присутствии полиакриламида, фильтрацию и промывку осадка Mg(OH)2, карбонизацию пульпы с получением твердой фазы основного карбоната магния и его прокаливание, отличающийся тем, что используют высокоминерализованный рассол с содержанием CaCl2 60-350 г/л, который охлаждают до +18 ÷ -25°С, после отделения кристаллов CaCl2·6H2O разбавляют и отделяют выпавший осадок гидроксида железа, а образующийся при осаждении гидроксида магния раствор CaCl2 после нейтрализации направляют на растворение кристаллов CaCl2·6H2O с получением тяжелых солевых растворов.1. A method of producing magnesium oxide from brines with a CaCl 2 content of up to 60.0 g / l, including treating them with milk of lime obtained after calcining dolomite, limestone, thickening the pulp in the presence of polyacrylamide, filtering and washing the precipitate Mg (OH) 2 , carbonization pulps with obtaining the solid phase of the basic magnesium carbonate and its calcination, characterized in that they use highly mineralized brine with a CaCl 2 content of 60-350 g / l, which is cooled to +18 ÷ -25 ° C, after separation of CaCl 2 · 6H 2 O crystals the hydroxide precipitate is diluted and separated and iron, and formed by the deposition of magnesium hydroxide CaCl 2 solution after neutralization direct dissolution of crystals CaCl 2 · 6H 2 O to give a heavy brines. 2. Способ по п.1, отличающийся тем, что обжиг доломита (известняка) осуществляют до степени диссоциации карбонатов на 91-95%.2. The method according to claim 1, characterized in that the firing of dolomite (limestone) is carried out to a degree of dissociation of carbonates by 91-95%. 3. Способ по п.1, отличающийся тем, что осадок ("недожог") после карбонизации пульпы возвращают на обжиг доломита (известняка).3. The method according to claim 1, characterized in that the precipitate ("underburning") after carbonation of the pulp is returned to the firing of dolomite (limestone).
RU2001117776A 2001-06-26 2001-06-26 Method of recovering magnesium oxide from natural brines RU2211803C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2001117776A RU2211803C2 (en) 2001-06-26 2001-06-26 Method of recovering magnesium oxide from natural brines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2001117776A RU2211803C2 (en) 2001-06-26 2001-06-26 Method of recovering magnesium oxide from natural brines

Publications (2)

Publication Number Publication Date
RU2001117776A true RU2001117776A (en) 2003-06-10
RU2211803C2 RU2211803C2 (en) 2003-09-10

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Family Applications (1)

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RU2001117776A RU2211803C2 (en) 2001-06-26 2001-06-26 Method of recovering magnesium oxide from natural brines

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RU (1) RU2211803C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2516538C2 (en) * 2012-02-17 2014-05-20 Закрытое акционерное общество (ЗАО) "Экостра-Наутех" Method of obtaining lithium concentrate from lithium-bearing natural brines and its processing
RU2681622C1 (en) * 2018-06-06 2019-03-11 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" Method of obtaining aqueous magnesium bicarbonate
RU2748371C1 (en) * 2020-10-22 2021-05-24 Общество С Ограниченной Ответственностью "Научно - Исследовательский Институт Технологий Органической, Неорганической Химии И Биотехнологий" Method for cleaning bischofite from iron compounds

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