RU2005129808A - METHOD FOR PROCESSING A LOW-POTASSIUM SODARING SOLUTION WITH A HIGH SULFUR CONTENT - Google Patents

METHOD FOR PROCESSING A LOW-POTASSIUM SODARING SOLUTION WITH A HIGH SULFUR CONTENT Download PDF

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RU2005129808A
RU2005129808A RU2005129808/15A RU2005129808A RU2005129808A RU 2005129808 A RU2005129808 A RU 2005129808A RU 2005129808/15 A RU2005129808/15 A RU 2005129808/15A RU 2005129808 A RU2005129808 A RU 2005129808A RU 2005129808 A RU2005129808 A RU 2005129808A
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Russia
Prior art keywords
soda
potassium
recrystallization
salt
mother liquor
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RU2005129808/15A
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Russian (ru)
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RU2305658C2 (en
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Гакиф Закирович Насыров (RU)
Гакиф Закирович Насыров
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Открытое акционерное общество "Всероссийский алюминиево-магниевый институт" (RU)
Открытое акционерное общество "Всероссийский алюминиево-магниевый институт"
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Priority to RU2005129808/15A priority Critical patent/RU2305658C2/en
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Способ комплексной переработки низкокалийного содопоташного раствора с высоким содержанием серы, включающий предварительную концентрирующую выпарку исходного содопоташного раствора, последующую его выпарку до насыщения сульфатными солями с выделением в осадок чистой моногидратной соды, выделение сульфата калия из полученного маточного раствора моногидратной соды путем смешения с маточным раствором безводной соды и охлаждением его до температуры 35-40°С, выделения из маточного раствора сульфата калия грязной безводной соды и перекристаллизацию грязной безводной соды в чистую моногидратную соду, отличающийся тем, что избыток серы, содержащейся в исходном содопоташном растворе сверх содержания в нем калийной щелочи, выводят из процесса в виде самостоятельной беркеитовой соли (Na2СО3·2Na2SO4) путем гидрохимической перекристаллизации части товарного сульфата калия расчетного количества насыщенного раствора моногидратной соды последовательно в две стадии, при этом на первой стадии в осадок выделяют глазеритовую соль (Na2SO4·3K2SO4) путем перекристаллизации исходного сульфата калия в оборотном маточном растворе, получаемом на второй стадии при перекристаллизации глазеритовой соли, а на второй стадии выделяют в осадок беркеитовую соль (Na2CO3·2Na2SO4) путем перекристаллизации глазеритовой соли в вновь приготовленном насыщенном растворе чистой моногидратной соды, дозируемом из расчета получения после перекристаллизации глазеритовой соли оборотного маточного раствора с молярным индексом калия не более 17%.A method of complex processing of low potassium soda-potash solution with a high sulfur content, including preconcentrating evaporation of the initial soda-potash solution, its subsequent evaporation to saturation with sulphate salts to precipitate pure monohydrate soda, the separation of potassium sulphate from the resulting mother liquor of monohydrate soda by mixing with the mother liquor anhydrous anhydrous and cooling it to a temperature of 35-40 ° C, the allocation of dirty anhydrous soda from the mother liquor of potassium sulfate and redistribution the istallization of dirty anhydrous soda into pure monohydrate soda, characterized in that the excess of sulfur contained in the original soda-potash solution in excess of the potassium alkali content in it is removed from the process in the form of an independent berkeite salt (Na 2 CO 3 · 2Na 2 SO 4 ) by hydrochemical recrystallization marketable parts of potassium sulfate calculated amount of a saturated solution of soda monohydrate sequentially in two steps, wherein in the first stage the precipitate is isolated glazeritovuyu salt (Na 2 SO 4 · 3K 2 SO 4) by recrystallization iskhodnog potassium sulfate in working mother liquor which is obtained in the second step the recrystallization glazeritovoy salts, and in the second stage is isolated precipitate berkeitovuyu salt (Na 2 CO 3 · 2Na 2 SO 4) by recrystallization glazeritovoy salt in a newly prepared saturated pure monohydrate soda solution metered based on the receipt after recrystallization of the glaserite salt of a reverse mother liquor with a molar index of potassium of not more than 17%.
RU2005129808/15A 2005-09-14 2005-09-14 Method of processing low-potassium soda potash solution at high content of sulfur RU2305658C2 (en)

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RU2005129808/15A RU2305658C2 (en) 2005-09-14 2005-09-14 Method of processing low-potassium soda potash solution at high content of sulfur

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RU2005129808/15A RU2305658C2 (en) 2005-09-14 2005-09-14 Method of processing low-potassium soda potash solution at high content of sulfur

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RU2005129808A true RU2005129808A (en) 2007-03-27
RU2305658C2 RU2305658C2 (en) 2007-09-10

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RU2305658C2 (en) 2007-09-10

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Effective date: 20080915