SU520001A1 - The method of hydrochemical processing of alunite - Google Patents

The method of hydrochemical processing of alunite

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Publication number
SU520001A1
SU520001A1 SU1852006A SU1852006A SU520001A1 SU 520001 A1 SU520001 A1 SU 520001A1 SU 1852006 A SU1852006 A SU 1852006A SU 1852006 A SU1852006 A SU 1852006A SU 520001 A1 SU520001 A1 SU 520001A1
Authority
SU
USSR - Soviet Union
Prior art keywords
sodium
potassium
sulphate
amount
solution
Prior art date
Application number
SU1852006A
Other languages
Russian (ru)
Inventor
Г.З. Насыров
Н.А. Калужский
В.Н. Костин
Original Assignee
Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой, Магниевой И Электродной Промышленности Министерства Цветной Металлургии Ссср
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
Application filed by Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой, Магниевой И Электродной Промышленности Министерства Цветной Металлургии Ссср filed Critical Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой, Магниевой И Электродной Промышленности Министерства Цветной Металлургии Ссср
Priority to SU1852006A priority Critical patent/SU520001A1/en
Priority to DE2345292A priority patent/DE2345292C3/en
Priority to CA180,838A priority patent/CA1003619A/en
Priority to IT28861/73A priority patent/IT998596B/en
Priority to MX147176A priority patent/MX143262A/en
Priority to FR7339507A priority patent/FR2209719A1/en
Priority to US05/607,498 priority patent/US3983211A/en
Application granted granted Critical
Publication of SU520001A1 publication Critical patent/SU520001A1/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00Compounds of aluminium
    • C01F7/02Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0686Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process from sulfate-containing minerals, e.g. alunite
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/008Preparation of potassium sulfate from alunite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Claims (1)

Способ включает следующие технологические переделы: размол и выщелачивание алунитовой руды оборотным щелочным раствором , обескремнивание и упарку алюминатного раствора с выделением в осадок смеси сульфатов кали  и натри , разбавление и выкручивание алюминатного раствора с выделением в осадок гидроокиси алюмини , конверсию сульфатных солей раствором едкого кали  по реакции: ( теКаД) SO4+mKOH K2SO4+/ zNaOH, где - т-{-п 1, возврат маточного раствора после выкручивани  в смеси с раствором после коиверсии сульфатов дл  выщелачивани  новой порции алунита с добавкой в него требуемого количества едкого натри  со стороны. Дл  выдерживани  заданного содержани  мол рного состава щелочей кали  и натри  в технологическом цикле в процесс со .стороны ввод т едкий натр, количество которого рассчитываетс  следующим образом: %Na+R,On- %Na, где X - количество вводимого едкого натра , кг; RaOc, Р2Оп, Р2Оал - количество щелочей в пересчете на Na2O соответствепно в товарном сульфате кали , безвозвратно тер емое в технологическом цикле и вводимое в процессе с алунитом на 1 т глинозема , кг; % Na - количество натриевой щелочи от суммы щелочей в товарном сульфате кали  и в алуните, мол. %. Пример. Дл  получени  1 т глинозема берут 6,5 т алунитовой руды, в которой содержитс  1100 кг AlgOa, 223 кг смеси сульфатов кали  и натри  в пересчете на Na2O, в которой мол рна  дол  содержани  натриевой щелочи равна 10%, и 860 кг ЗОз, св занного в алуните с глиноземом. В результате гидрохимической переработки руды способом Байера и конверсии сульфатных отходов раствором едкого кали  получают в товарном продукте 1000 кг глинозема и 843 кг сульфата кали  в пересчете на ЫагО, содержащего 10% сульфата натри  от сзммы щелочей в сульфате. В технологическом цикле тер ют со щламом 60 кг ЗОз, 50 кг щелочей. При этом дл  сохранени  мол рного содерлсани  кали  от суммы щелочей в технологическом цикле на уровне 20% ввод т в процесс со стороны на 1 т глинозема следующее количество едкого натра, кг: Na2O 843-0,1+50-0,8-223-0,1 102 или в пересчете на NaOH, кг: , где 40 и 62 - молекул рные веса, соответственно NaOH и Na2O. Формула изобретени  1. Способ получени  глинозема и сульфата кали  из алунита путем извлечени  глинозема щелочным гидрохимическим методом и получени  сульфата кали  конверсией сульфатных отходов раствором едкого кали , отличающийс  тем, что, с целью увеличени  извлечени  сульфата каЛИЯ , сокращени  удельных объемов растворов и повышени  степени очистки алюминатного раствора от окиси кремни , в процесс ввод т натрийсодержащее соединение, обеспечивающее мол рное соотнощение калиевой и натриевой щелочей в алюминатном растворе на всех технологических переделах в следующих соотнощени х, %: Калиева  щелочь15-25 Натриева  щелочьОстальное 2, Способ по п. 1, отличающийс  тем, что в качестве натрийсодержащего соединени  ввод т едкий натр. 3. Способ по п. 1, отличающийс  тем, что в качестве натрийсодержащего соединени  ввод т сульфат натри .The method includes the following technological redistribution: grinding and leaching of alunite ore with circulating alkaline solution, desilication and evaporation of the aluminate solution to precipitate a mixture of potassium and sodium sulphate, diluting and unscrewing the aluminate solution, precipitating sulphate salts with a caustic potassium solution. : (TEKA) SO4 + mKOH K2SO4 + / zNaOH, where - t - {- n 1, return the mother liquor after unscrewing mixed with the solution after co-sulfates to leach out a new batch of al unit with the addition of the required amount of sodium hydroxide from the side. In order to maintain a given content of the molar composition of alkalis of potassium and sodium in the process cycle, caustic soda is introduced into the process from the side, the amount of which is calculated as follows:% Na + R, On-% Na, where X is the amount of caustic soda, kg; RaOc, P2Op, P2Oal - the amount of alkalis in terms of Na2O corresponds to commercial potassium sulfate, irretrievably lost in the technological cycle and introduced in the process with alunite per 1 ton of alumina, kg; % Na is the amount of sodium alkali of the amount of alkali in salable potassium sulfate and in alunite, they say. % Example. To obtain 1 ton of alumina, 6.5 tons of alunite ore are taken, which contains 1100 kg of AlgOa, 223 kg of a mixture of potassium and sodium sulphates in terms of Na2O, in which the molar content of sodium alkali is 10%, and 860 kg of SO, alunite with alumina. As a result of hydrochemical ore processing by the Bayer method and the conversion of sulphate waste with a solution of caustic potash, 1000 kg of alumina and 843 kg of potassium sulphate in terms of LAO, containing 10% of sodium sulphate from the alkali sulphate in sulphate, are obtained in the salable product. In the process cycle, 60 kg of ZOZ, 50 kg of alkali are lost with a slit. At the same time, in order to preserve the molar content of potassium from the amount of alkalis in the technological cycle at a level of 20%, the following amount of caustic soda, kg: Na2O 843-0.1 + 50-0.8-223- 0.1 102 or in terms of NaOH, kg:, where 40 and 62 are molecular weights, respectively, NaOH and Na2O. Claim 1. Method for producing alumina and potassium sulphate from alunite by extracting alumina by alkaline hydrochemical method and obtaining potassium sulphate by converting sulphate wastes with caustic soda solution, in order to increase the recovery of potassium sulphate, reduce specific volumes of solutions and increase the degree of purification solution of silicon oxide, sodium-containing compound is introduced into the process, ensuring the molar ratio of potassium and sodium alkali in the aluminate solution on Cex technological updating in the following sootnoscheni x,%: Kaliyeva scheloch15-25 Sodium schelochOstalnoe 2 The method according to claim 1, characterized in that as the sodium-containing compound is introduced caustic soda.. 3. A method according to claim 1, characterized in that sodium sulfate is added as the sodium compound.
SU1852006A 1972-12-08 1972-12-08 The method of hydrochemical processing of alunite SU520001A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SU1852006A SU520001A1 (en) 1972-12-08 1972-12-08 The method of hydrochemical processing of alunite
DE2345292A DE2345292C3 (en) 1972-12-08 1973-09-07 Process for the extraction of clay and potassium sulfate from Alunit
CA180,838A CA1003619A (en) 1972-12-08 1973-09-12 Method of producing alumina and potassium sulphate from alunite
IT28861/73A IT998596B (en) 1972-12-08 1973-09-12 PROCEDURE FOR OBTAINING ALUMINE AND POTASSIUM SULFATE FROM ALUNITE
MX147176A MX143262A (en) 1972-12-08 1973-11-01 IMPROVED METHOD FOR OBTAINING ALUMINA AND POTASSIUM SULPHATE FROM MINERALES DE ALUNITA
FR7339507A FR2209719A1 (en) 1972-12-08 1973-11-07 Alumina and potassium sulphate prodn. from alunite - with high yields, using an alkali soln.
US05/607,498 US3983211A (en) 1972-12-08 1975-08-25 Method of producing alumina and potassium sulphate form alunite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1852006A SU520001A1 (en) 1972-12-08 1972-12-08 The method of hydrochemical processing of alunite

Publications (1)

Publication Number Publication Date
SU520001A1 true SU520001A1 (en) 1976-07-25

Family

ID=20533611

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1852006A SU520001A1 (en) 1972-12-08 1972-12-08 The method of hydrochemical processing of alunite

Country Status (6)

Country Link
CA (1) CA1003619A (en)
DE (1) DE2345292C3 (en)
FR (1) FR2209719A1 (en)
IT (1) IT998596B (en)
MX (1) MX143262A (en)
SU (1) SU520001A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117077A (en) * 1976-09-13 1978-09-26 Gakif Zakirovich Nasyrov Process for alunite treatment

Also Published As

Publication number Publication date
FR2209719A1 (en) 1974-07-05
CA1003619A (en) 1977-01-18
DE2345292B2 (en) 1977-09-01
FR2209719B1 (en) 1976-06-18
DE2345292A1 (en) 1974-07-11
DE2345292C3 (en) 1978-05-03
IT998596B (en) 1976-02-20
MX143262A (en) 1981-04-10

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