SG144902A1 - Method and apparatus for obtaining purified phosphoric acid from phosphoric acid aqueous solution containing plural metal ions - Google Patents

Method and apparatus for obtaining purified phosphoric acid from phosphoric acid aqueous solution containing plural metal ions

Info

Publication number
SG144902A1
SG144902A1 SG200801052-2A SG2008010522A SG144902A1 SG 144902 A1 SG144902 A1 SG 144902A1 SG 2008010522 A SG2008010522 A SG 2008010522A SG 144902 A1 SG144902 A1 SG 144902A1
Authority
SG
Singapore
Prior art keywords
phosphoric acid
metal ions
aqueous solution
solution containing
inorganic salt
Prior art date
Application number
SG200801052-2A
Inventor
Syogo Maeda
Tomokiyo Takeyama
Akiyoshi Oda
Eiichi Mizutani
Yasuhito Kawase
Original Assignee
Nippon Refine Co Ltd
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 Nippon Refine Co Ltd filed Critical Nippon Refine Co Ltd
Publication of SG144902A1 publication Critical patent/SG144902A1/en

Links

Abstract

Method and apparatus for obtaining purified phosphoric acid from phosphoric acid aqueous solution containing plural metal ions A method for obtaining purified phosphoric acid from a phosphoric acid aqueous solution containing a plurality of metal ions includes: [1] crystallizing and coprecipitating that separate out an inorganic salt crystal from a phosphoric acid aqueous solution containing a plurality of metal ions and coprecipitate metal ions including: (a) mixing a phosphoric acid aqueous solution containing a plurality of metal ions with an inorganic salt aqueous solution; (b) separating out an inorganic salt crystal and coprecipitating simultaneously the metal ions by further mixing an organic poor solvent which is soluble in phosphoric acid and does not dissolve an inorganic salt with the above resultant mixture; and (c) solid-liquid separating by filtering the inorganic salt crystal containing the metal ions; and [2] evaporating that obtains purified phosphoric acid by evaporating an organic poor solvent and water in a filtrate obtained by the filtration, wherein the amount of metal ions dissolved in the phosphoric acid / organic poor solvent mixture in the separating is less than the amount of metal ions in the phosphoric acid solution used in the mixing.
SG200801052-2A 2007-02-08 2008-02-05 Method and apparatus for obtaining purified phosphoric acid from phosphoric acid aqueous solution containing plural metal ions SG144902A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007028820A JP5242061B2 (en) 2007-02-08 2007-02-08 Method and apparatus for obtaining purified phosphoric acid from aqueous phosphoric acid solution containing a plurality of metal ions

Publications (1)

Publication Number Publication Date
SG144902A1 true SG144902A1 (en) 2008-08-28

Family

ID=39710888

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200801052-2A SG144902A1 (en) 2007-02-08 2008-02-05 Method and apparatus for obtaining purified phosphoric acid from phosphoric acid aqueous solution containing plural metal ions

Country Status (5)

Country Link
JP (1) JP5242061B2 (en)
KR (1) KR101410594B1 (en)
CN (1) CN101239710B (en)
SG (1) SG144902A1 (en)
TW (1) TWI452010B (en)

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JP4927670B2 (en) * 2007-09-07 2012-05-09 住友精密工業株式会社 Etching waste liquid recycling method and recycling apparatus
CN101439849B (en) * 2008-12-31 2010-12-08 孟庆深 Comprehensive utilization process for waste aluminum etching solution
CN102905783B (en) * 2010-05-25 2016-04-27 M技术株式会社 Control the manufacture method of the precipitation material of doped chemical amount
CN101857216B (en) * 2010-06-29 2012-04-25 贵州川恒化工有限责任公司 Method for extracting and purifying wet-process phosphorous acid to produce industrial-grade phosphorous acid
CN102502547A (en) * 2011-10-10 2012-06-20 浙江兴达活性炭有限公司 Process for removing impurity in phosphoric acid from activated carbon production by phosphoric acid method
CN102730656A (en) * 2012-06-26 2012-10-17 瓮福（集团）有限责任公司 Method for preparing phosphoric acid with high concentration by microwave heating of raffinate acid
KR102228425B1 (en) * 2013-01-14 2021-03-16 술저 매니지멘트 에이지 Multi-stage crystallisation process and apparatus to purify a compound
JP5962538B2 (en) * 2013-02-27 2016-08-03 Ｊｆｅエンジニアリング株式会社 Water treatment method and apparatus
CN103979509B (en) * 2014-04-28 2016-04-06 合肥茂腾环保科技有限公司 A kind of method reclaiming phosphoric acid in waste aluminum etching solution
JP6268054B2 (en) * 2014-07-09 2018-01-24 株式会社アナック Method and apparatus for producing fertilizer by treating phosphoric acid mixed acid waste liquid
JP2016059855A (en) 2014-09-17 2016-04-25 株式会社東芝 Treatment apparatus and method for recycling treatment liquid
CN107089650B (en) * 2017-05-27 2019-10-11 深圳市深投环保科技有限公司 The preparation method of chemical polishing waste phosphoric acid processing method and monoammonium phosphate
CN108837551B (en) * 2018-07-28 2024-04-02 湖南懋天世纪新材料有限公司 Superfine ammonium paratungstate evaporation crystallization device and crystallization method
KR20200054890A (en) * 2018-11-12 2020-05-20 주식회사 동진쎄미켐 Method for preparing purified phosphoric acid from used etchant
CN109942408A (en) * 2019-03-24 2019-06-28 雒晓兵 A kind of waste utilization method of useless etching mixed acid solution
CN110980675A (en) * 2019-12-30 2020-04-10 南京乐透思环保科技有限公司 Defluorination method of wet-process phosphoric acid
CN112499606B (en) * 2021-01-20 2022-04-08 江苏电科环保有限公司 Purification method of phosphoric acid waste liquid
WO2023034158A1 (en) * 2021-09-03 2023-03-09 Texas Tech University System Preparation of ionic pharmaceutical cocrystals using solid and liquid components

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KR100655429B1 (en) * 2005-11-10 2006-12-08 삼성전자주식회사 System and method for regenerating the phosphoric acid solution, and apparatus for treating substrate with the system

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JP2006315931A (en) * 2005-05-16 2006-11-24 Nippon Refine Kk Method and apparatus for recovering phosphoric acid from metal ion-containing mixed acid aqueous solution containing phosphoric acid and at least one kind of acid except phosphoric acid
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1046346A1 (en) * 1981-12-25 1983-10-07 Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов,Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии Method for regenerating waste fluorinaceous solutions
FR2629812A1 (en) * 1988-04-12 1989-10-13 Cerphos Process for removing heavy metals, and especially cadmium, contained in phosphoric acid
JP2002153889A (en) * 2000-11-20 2002-05-28 National Institute Of Advanced Industrial & Technology Method for treating copper chloride-containing waste etching solution, treating agent and method for recovering copper
KR20060002636A (en) * 2004-07-03 2006-01-09 주식회사 에이제이테크 A method of recycling used etchant containing phosphoric acid
KR100655429B1 (en) * 2005-11-10 2006-12-08 삼성전자주식회사 System and method for regenerating the phosphoric acid solution, and apparatus for treating substrate with the system

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RECOVERY OF PHOSPHORIC ACID IN WASTE ACID *

Also Published As

Publication number Publication date
TW200846280A (en) 2008-12-01
CN101239710A (en) 2008-08-13
KR101410594B1 (en) 2014-06-20
KR20080074791A (en) 2008-08-13
JP5242061B2 (en) 2013-07-24
TWI452010B (en) 2014-09-11
CN101239710B (en) 2013-07-10
JP2008189537A (en) 2008-08-21

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