EA200900656A1 - METHOD FOR PROCESSING PHOSPHOGIPS FOR AMMONIUM SULPHATE AND CALCIUM CARBONATE - Google Patents
METHOD FOR PROCESSING PHOSPHOGIPS FOR AMMONIUM SULPHATE AND CALCIUM CARBONATEInfo
- Publication number
- EA200900656A1 EA200900656A1 EA200900656A EA200900656A EA200900656A1 EA 200900656 A1 EA200900656 A1 EA 200900656A1 EA 200900656 A EA200900656 A EA 200900656A EA 200900656 A EA200900656 A EA 200900656A EA 200900656 A1 EA200900656 A1 EA 200900656A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- calcium carbonate
- processing
- phosphogypsum
- carbon dioxide
- ammonium sulfate
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Fertilizers (AREA)
Abstract
Изобретение относится к переработке фосфогипса - отхода производства фосфорно-кислотного производства на сульфат аммония ((NH)SO), используемого в химической промышленности, например в производстве удобрений, а также на карбонат кальция (СаСО). Способ переработки фосфогипса на сульфат аммония и карбонат кальция включает взаимодействие фосфогипса с раствором карбоната аммония и обработку пульпы углекислым газом с последующим разделением карбоната кальция и сульфата аммония фильтрацией. Обработку пульпы углекислым газом ведут при её охлаждении до температуры 35-45°С, углекислый газ берут и в количестве 50-70% от стехиометрии на СаО, а затем полученную реакционную массу нагревают перед фильтрацией до температуры 75-95°С.The invention relates to the processing of phosphogypsum - waste production of phosphoric acid production of ammonium sulfate ((NH) SO), used in the chemical industry, for example in the production of fertilizers, as well as calcium carbonate (CaCO). A method of processing phosphogypsum for ammonium sulfate and calcium carbonate involves the interaction of phosphogypsum with ammonium carbonate solution and the treatment of pulp with carbon dioxide, followed by separation of calcium carbonate and ammonium sulfate by filtration. The pulp is treated with carbon dioxide when it is cooled to a temperature of 35-45 ° C, carbon dioxide is taken in an amount of 50-70% of stoichiometry on CaO, and then the resulting reaction mass is heated before filtration to a temperature of 75-95 ° C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA200900656A EA015407B1 (en) | 2009-06-04 | 2009-06-04 | Method for processing phosphogypsum to ammonium sulfate and calcium carbonate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA200900656A EA015407B1 (en) | 2009-06-04 | 2009-06-04 | Method for processing phosphogypsum to ammonium sulfate and calcium carbonate |
Publications (2)
Publication Number | Publication Date |
---|---|
EA200900656A1 true EA200900656A1 (en) | 2010-12-30 |
EA015407B1 EA015407B1 (en) | 2011-08-30 |
Family
ID=43531274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EA200900656A EA015407B1 (en) | 2009-06-04 | 2009-06-04 | Method for processing phosphogypsum to ammonium sulfate and calcium carbonate |
Country Status (1)
Country | Link |
---|---|
EA (1) | EA015407B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115417427A (en) * | 2022-09-16 | 2022-12-02 | 西安西热锅炉环保工程有限公司 | System and method for preparing ammonia by circularly decomposing ammonium bicarbonate solution |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2475450C1 (en) * | 2011-11-24 | 2013-02-20 | Андрей Владимирович Своволя | Method of processing phosphogypsum |
RU2510366C2 (en) * | 2012-05-29 | 2014-03-27 | Общество с ограниченной ответственностью Инженерно-производственная компания "ИНТЕРФОС" | Method of processing phosphogypsum to ammonium sulphate and phosphochalk |
RU2509724C1 (en) * | 2012-08-13 | 2014-03-20 | Общество с ограниченной ответственностью Инженерно-производственная компания "ИНТЕРФОС" | Method of producing highly pure calcium carbonate and nitrogen-sulphate fertiliser during complex processing of phosphogypsum |
US9682868B2 (en) * | 2015-01-30 | 2017-06-20 | Sparstane Technologies LLC | Partially continuous countercurrent process for converting gypsum to ammonium sulfate and calcium carbonate |
CN104774125B (en) * | 2015-03-20 | 2017-11-03 | 潍坊学院 | A kind of method of the rich nitrogen sulfate fertilizer of utilization ardealite production and recovering rare earth |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU715468A1 (en) * | 1977-04-21 | 1980-02-15 | Предприятие П/Я В-8830 | Method of preparing ammonium sulfate |
SU1296512A1 (en) * | 1985-03-27 | 1987-03-15 | Львовский политехнический институт им.Ленинского комсомола | Method of processing phosphogypsum to ammonium sulfate and calcium carbonate |
UA75743C2 (en) * | 2004-05-24 | 2006-05-15 | Odesa Nat Polytechnical Univer | A method for the complex reprocessing phosphogypsum into fertilizers |
CN101269823B (en) * | 2008-05-07 | 2011-04-06 | 瓮福(集团)有限责任公司 | Method for producing ammonium sulphate with phosphogypsum as raw material |
-
2009
- 2009-06-04 EA EA200900656A patent/EA015407B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115417427A (en) * | 2022-09-16 | 2022-12-02 | 西安西热锅炉环保工程有限公司 | System and method for preparing ammonia by circularly decomposing ammonium bicarbonate solution |
CN115417427B (en) * | 2022-09-16 | 2024-01-30 | 西安西热锅炉环保工程有限公司 | System and method for preparing ammonia by circularly decomposing ammonium bicarbonate solution |
Also Published As
Publication number | Publication date |
---|---|
EA015407B1 (en) | 2011-08-30 |
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