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EA200900656A1 - METHOD FOR PROCESSING PHOSPHOGIPS FOR AMMONIUM SULPHATE AND CALCIUM CARBONATE - Google Patents

METHOD FOR PROCESSING PHOSPHOGIPS FOR AMMONIUM SULPHATE AND CALCIUM CARBONATE

Info

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
Application number
EA200900656A
Other languages
Russian (ru)
Other versions
EA015407B1 (en
Inventor
Владимир Григорьевич Казак
Виктор Васильевич Долгов
Наталья Митрофановна Бризицкая
Андрей Станиславович Малявин
Наталья Васильевна Букколини
Денис Александрович Пагалёшкин
Максим Николаевич Цикин
Original Assignee
Открытое Акционерное Общество "Научно-Исследовательский Институт По Удобрениям И Инсектофунгицидам Им. Профессора Я.В. Самойлова"
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 Открытое Акционерное Общество "Научно-Исследовательский Институт По Удобрениям И Инсектофунгицидам Им. Профессора Я.В. Самойлова" filed Critical Открытое Акционерное Общество "Научно-Исследовательский Институт По Удобрениям И Инсектофунгицидам Им. Профессора Я.В. Самойлова"
Priority to EA200900656A priority Critical patent/EA015407B1/en
Publication of EA200900656A1 publication Critical patent/EA200900656A1/en
Publication of EA015407B1 publication Critical patent/EA015407B1/en

Links

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  • 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.

EA200900656A 2009-06-04 2009-06-04 Method for processing phosphogypsum to ammonium sulfate and calcium carbonate EA015407B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ KG MD TJ TM

TC4A Change in name of a patent proprietor in a eurasian patent
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): BY KZ