RU94042250A - Method to treat wastes presented in the form of sodium sulfate - Google Patents

Method to treat wastes presented in the form of sodium sulfate

Info

Publication number
RU94042250A
RU94042250A RU94042250/25A RU94042250A RU94042250A RU 94042250 A RU94042250 A RU 94042250A RU 94042250/25 A RU94042250/25 A RU 94042250/25A RU 94042250 A RU94042250 A RU 94042250A RU 94042250 A RU94042250 A RU 94042250A
Authority
RU
Russia
Prior art keywords
kcl
potassium sulfate
potassium
nacl
saturated
Prior art date
Application number
RU94042250/25A
Other languages
Russian (ru)
Other versions
RU2108972C1 (en
Inventor
Шерцберг Хайнц
De]
Шмитц Райнер
Original Assignee
Маннесманн АГ (DE)
Маннесманн Аг
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 Маннесманн АГ (DE), Маннесманн Аг filed Critical Маннесманн АГ (DE)
Publication of RU94042250A publication Critical patent/RU94042250A/en
Application granted granted Critical
Publication of RU2108972C1 publication Critical patent/RU2108972C1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/04—Chlorides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/06—Preparation of sulfates by double decomposition
    • C01D5/08—Preparation of sulfates by double decomposition with each other or with ammonium sulfate

Abstract

FIELD: methods of treatment of wastes presented in the form of sodium sulfate by reaction of exchange with potassium chloride with production of potassium sulfate in presence of water. SUBSTANCE: reaction of exchange is exercised in one stage under temperature of 5 - 50 C and mainly - 20 - 30 C with production of suspension of potassium sulfate and KSO- mother liquor, composition of which in terms of 1000 kmole of HO corresponds to the following: 11.5 - 15.0 kmole of NaCl, 2.4 - 3.0 kmole of NaSOand 23. 0 - 43.6 kmole of KCl;. Formed potassium sulfate is separated from potassium sulfate mother liquor and dried and potassium sulfate mother liquor is mixed with KCl - NaCl mixture, especially with KCl - NaCl crystallizate in the qualitative ratio, that allows to produce pure potassium chloride crystallizate and saturated KCl and almost saturated NaCl solution. In the case if it is necessary formed KCl crystallite is as a whole or partially introduced as raw material in stage of potassium sulfate production and / or formed saturated KCl and almost saturated NaCl solution are fed in circulation of raw potassium salts processing aggregate solution. EFFECT: improved process.

Claims (1)

Изобретение относится к способу обработки отходов в виде сульфата натрия реакцией обмена с хлоридом калия с получением сульфата калия в присутствии воды. Реакцию обмена осуществляют в одну стадию при температуре 5 - 50oC, в особенности 20 - 30oC, с получением суспензии из сульфата калия и K2SO4 - маточного раствора, состав которого, в расчете на 1000 кмоль H2O, соответствует следующему: 11,5 - 15,0 кмоль Na2Cl2, 2,4 - 3,0 кмоль Na2SO4 и 23,0 - 43,6 кмоль K2Cl2; образовавшийся сульфат калия отделяют от маточного раствора сульфата калия и высушивают и маточный раствор сульфата калия перемешивают с KCl - NaCl-смесью, в особенности с KCl - NaCl - кристаллизатором в таком количественном соотношении, чтобы образовывались чистый кристаллизат хлорида калия и насыщенный KCl и почти насыщенный NaCl раствор, причем в случае необходимости образовавшийся KCl - кристаллизат целиком или частично в виде сырья вводят в стадию получения сульфата калия и/или образовавшийся насыщенный KCl и почти насыщенный NaCl раствор подают в циркуляцию раствора установки по переработке сырых калийных солей.The invention relates to a method for treating waste in the form of sodium sulfate by an exchange reaction with potassium chloride to produce potassium sulfate in the presence of water. The exchange reaction is carried out in one stage at a temperature of 5-50 ° C, in particular 20-30 ° C, to obtain a suspension of potassium sulfate and K 2 SO 4 - mother liquor, the composition of which, based on 1000 kmol of H 2 O, corresponds to the following: 11.5 - 15.0 kmol Na 2 Cl 2 , 2.4 - 3.0 kmol Na 2 SO 4 and 23.0 - 43.6 kmol K 2 Cl 2 ; the resulting potassium sulfate is separated from the mother liquor of potassium sulfate and dried, and the mother liquor of potassium sulfate is mixed with a KCl - NaCl mixture, in particular with a KCl - NaCl crystallizer in such a proportion that a pure crystalline potassium chloride and saturated KCl and almost saturated NaCl are formed a solution, moreover, if necessary, the formed KCl crystallisate is introduced, in whole or in part, in the form of raw materials, into the stage of potassium sulfate production and / or the formed saturated KCl and almost saturated NaCl solution are fed into circulation of the solution of the plant for the processing of raw potash salts.
RU94042250A 1993-11-26 1994-11-24 Method for treating wastes resulting from processing crude potassium salts and constituted, predominantly, by sodium sulfates RU2108972C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4340839.7 1993-11-26
DE19934340839 DE4340839C1 (en) 1993-11-26 1993-11-26 Process for the utilisation of waste sodium sulphate

Publications (2)

Publication Number Publication Date
RU94042250A true RU94042250A (en) 1996-09-20
RU2108972C1 RU2108972C1 (en) 1998-04-20

Family

ID=6503841

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94042250A RU2108972C1 (en) 1993-11-26 1994-11-24 Method for treating wastes resulting from processing crude potassium salts and constituted, predominantly, by sodium sulfates

Country Status (2)

Country Link
DE (1) DE4340839C1 (en)
RU (1) RU2108972C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115246650A (en) * 2021-08-09 2022-10-28 江苏美东环境科技有限公司 Method for preparing industrial potassium sulfate from hazardous organic waste salt containing potassium chloride and sodium sulfate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3219911A1 (en) * 2021-05-25 2022-12-01 Jakob LIEDBERG Process for treatment of a sodium sulfate containing residue process stream of a battery manufacturing facility, a battery recycling facility, or a steel production plant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE504155C (en) * 1924-10-16 1930-08-01 Dipl Berging Ferdinand Stein Process for the production of potassium sulfate from sodium sulfate or glaserite and potassium chloride or their solutions
DE2820445C3 (en) * 1978-05-10 1982-05-19 Vsesojuznyj naučno-issledovatel'skij i proektnyj institut galurgii, Leningrad Process for the production of potassium sulfate
DD244540A1 (en) * 1985-12-20 1987-04-08 Kali Veb K PROCESS FOR PROCESSING GLASS SALT TO ALKALISULFATES
DD256503B1 (en) * 1986-12-30 1989-03-15 Kali Veb K METHOD FOR CARRYING OUT THE DECK PROCESS IN THE CALIINDUSTRY
DD273428A1 (en) * 1988-06-28 1989-11-15 Kali Veb K METHOD FOR THE PRODUCTION OF GROB CRYSTALLINE CORRUGATED CALIUM SULFATE IN BALL CONSTRUCTION FROM GLASSERITE AND CHLORINE CHLORIDE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115246650A (en) * 2021-08-09 2022-10-28 江苏美东环境科技有限公司 Method for preparing industrial potassium sulfate from hazardous organic waste salt containing potassium chloride and sodium sulfate

Also Published As

Publication number Publication date
DE4340839C1 (en) 1994-12-15
RU2108972C1 (en) 1998-04-20

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