NO944706L - Fremgangsmåte for rensing av fosforsyre - Google Patents

Fremgangsmåte for rensing av fosforsyre

Info

Publication number
NO944706L
NO944706L NO944706A NO944706A NO944706L NO 944706 L NO944706 L NO 944706L NO 944706 A NO944706 A NO 944706A NO 944706 A NO944706 A NO 944706A NO 944706 L NO944706 L NO 944706L
Authority
NO
Norway
Prior art keywords
phosphoric acid
purification
ions
impurity
reduction
Prior art date
Application number
NO944706A
Other languages
English (en)
Other versions
NO944706D0 (no
Inventor
Timo Karjalainen
Esko Kari
Original Assignee
Kemira Oy
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 Kemira Oy filed Critical Kemira Oy
Publication of NO944706L publication Critical patent/NO944706L/no
Publication of NO944706D0 publication Critical patent/NO944706D0/no

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration
    • C01B25/237—Selective elimination of impurities
    • C01B25/238—Cationic impurities, e.g. arsenic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Fuel Cell (AREA)
  • Removal Of Specific Substances (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Saccharide Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

Oppfinnelsen angår en frem- gangsmåte for fjerning av jern fra fos- forsyre fremstilt ved våtprosessen. Fe3'-ionene som er tilstede som en for- urensning i fosforsyren reduseres til Fe2*-ioner. Etter reduksjonen kan Fe2*- ionene fjernes fra fosforsyren ved kat- ionisk ionebytting.
NO944706A 1992-06-08 1994-12-06 Fremgangsmåte for rensing av fosforsyre NO944706D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI922650A FI90966C (fi) 1992-06-08 1992-06-08 Fosforihapon puhdistusmenetelmä
PCT/FI1993/000245 WO1993025472A1 (en) 1992-06-08 1993-06-07 Process for purifying phosphoric acid

Publications (2)

Publication Number Publication Date
NO944706L true NO944706L (no) 1994-12-06
NO944706D0 NO944706D0 (no) 1994-12-06

Family

ID=8535447

Family Applications (1)

Application Number Title Priority Date Filing Date
NO944706A NO944706D0 (no) 1992-06-08 1994-12-06 Fremgangsmåte for rensing av fosforsyre

Country Status (17)

Country Link
EP (1) EP0647205B1 (no)
AT (1) ATE138353T1 (no)
AU (1) AU4073593A (no)
BG (1) BG61396B1 (no)
CZ (1) CZ284622B6 (no)
DE (1) DE69302815T2 (no)
DK (1) DK0647205T3 (no)
ES (1) ES2088674T3 (no)
FI (1) FI90966C (no)
GR (1) GR3020332T3 (no)
HU (1) HU214096B (no)
NO (1) NO944706D0 (no)
PL (1) PL170642B1 (no)
RO (1) RO114319B1 (no)
RU (1) RU2102313C1 (no)
SK (1) SK280302B6 (no)
WO (1) WO1993025472A1 (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2320535C1 (ru) * 2006-11-01 2008-03-27 Закрытое акционерное общество "Научно-производственная компания "Интерфос" Способ получения очищенной фосфорной кислоты
US9573810B2 (en) 2012-07-21 2017-02-21 K-Technologies, Inc. Processes for the removal and recovery of minor elements in wet-process phosphoric acid
KR101600184B1 (ko) * 2014-07-18 2016-03-07 오씨아이 주식회사 인산 용액 내 금속이온의 제거방법
CN109399591B (zh) * 2018-12-26 2021-06-29 江苏新宏大集团有限公司 一种净化湿法磷酸的制备方法
CN111268659A (zh) * 2020-03-18 2020-06-12 四川大学 湿法磷酸萃取液的电解还原再生方法及湿法磷酸萃取工艺
EP4735173A1 (en) 2023-06-27 2026-05-06 Prayon Method for purifying a phosphate containing solution

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306702A (en) * 1962-06-18 1967-02-28 Nalco Chemical Co Removal of metal salt contaminants from acidic aqueous liquids
DE3022662A1 (de) * 1980-06-18 1982-01-21 Hoechst Ag, 6000 Frankfurt Verfahren zur reduktion dreiwertigen eisens in nassverfahrensphosphorsaeure
US5006319A (en) * 1988-03-04 1991-04-09 Fmc Corporation Process for removing iron, chromium and vanadium from phosphoric acid

Also Published As

Publication number Publication date
GR3020332T3 (en) 1996-09-30
PL170642B1 (pl) 1997-01-31
ATE138353T1 (de) 1996-06-15
DK0647205T3 (da) 1996-08-05
FI90966B (fi) 1994-01-14
EP0647205B1 (en) 1996-05-22
WO1993025472A1 (en) 1993-12-23
BG61396B1 (en) 1997-07-31
CZ308194A3 (en) 1995-07-12
CZ284622B6 (cs) 1999-01-13
HUT68275A (en) 1995-06-28
ES2088674T3 (es) 1996-08-16
AU4073593A (en) 1994-01-04
FI922650A0 (fi) 1992-06-08
RU2102313C1 (ru) 1998-01-20
NO944706D0 (no) 1994-12-06
SK149494A3 (en) 1995-07-11
BG99245A (bg) 1995-06-30
RO114319B1 (ro) 1999-03-30
RU94046263A (ru) 1996-10-20
FI90966C (fi) 1994-04-25
SK280302B6 (sk) 1999-11-08
HU214096B (en) 1997-12-29
EP0647205A1 (en) 1995-04-12
DE69302815T2 (de) 1996-12-19
DE69302815D1 (de) 1996-06-27

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application