MA20866A1 - Procede d'elimination de metaux lourds d'acides mineraux - Google Patents

Procede d'elimination de metaux lourds d'acides mineraux

Info

Publication number
MA20866A1
MA20866A1 MA21100A MA21100A MA20866A1 MA 20866 A1 MA20866 A1 MA 20866A1 MA 21100 A MA21100 A MA 21100A MA 21100 A MA21100 A MA 21100A MA 20866 A1 MA20866 A1 MA 20866A1
Authority
MA
Morocco
Prior art keywords
heavy metals
mineral acid
mineral acids
removing heavy
alkali metal
Prior art date
Application number
MA21100A
Other languages
English (en)
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of MA20866A1 publication Critical patent/MA20866A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
    • 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
    • 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
    • C01B25/24—Condensed phosphoric acids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/01—Chlorine; Hydrogen chloride
    • C01B7/07—Purification ; Separation
    • C01B7/0706—Purification ; Separation of hydrogen chloride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00—Compounds of manganese
    • C01G45/10—Sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treatment Of Sludge (AREA)
MA21100A 1986-02-13 1987-01-30 Procede d'elimination de metaux lourds d'acides mineraux MA20866A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863604483 DE3604483A1 (de) 1986-02-13 1986-02-13 Verfahren zum entfernen von schwermetallen aus mineralsaeuren

Publications (1)

Publication Number Publication Date
MA20866A1 true MA20866A1 (fr) 1987-10-01

Family

ID=6293998

Family Applications (1)

Application Number Title Priority Date Filing Date
MA21100A MA20866A1 (fr) 1986-02-13 1987-01-30 Procede d'elimination de metaux lourds d'acides mineraux

Country Status (7)

Country Link
US (1) US4777028A (fr)
EP (1) EP0232766B1 (fr)
JP (1) JPS62191409A (fr)
AT (1) ATE69035T1 (fr)
DE (2) DE3604483A1 (fr)
ES (1) ES2027235T3 (fr)
MA (1) MA20866A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327401A1 (de) * 1993-08-14 1995-02-16 Hoechst Ag Verfahren zur Entfernung von Blei und Cadmium aus Phosphorsäure
DE19811763A1 (de) * 1998-03-18 1999-09-23 Stadtwerke Karlsruhe Gmbh Verfahren zur Abtrennung von Arsen
US6861039B1 (en) * 1998-12-28 2005-03-01 Toyo Boeski Kabushiki Kaisha Method for purification of phosphoric acid high purity polyphosphoric acid
US20040179984A1 (en) * 2003-03-13 2004-09-16 Nagaraj D. R. Process for removing metal impurities from wet process phosphoric acid and compositions thereof
JP4316946B2 (ja) * 2003-07-01 2009-08-19 日本化学工業株式会社 高純度リン酸及びその製造方法
JP4567344B2 (ja) * 2004-02-12 2010-10-20 前澤工業株式会社 ヒ素の除去方法
CN101759158B (zh) * 2009-12-23 2011-06-29 河南豫光金铅股份有限公司 从废污酸中再生回收硫酸的方法
EP2455500A1 (fr) * 2010-11-22 2012-05-23 Costech International S.p.A. Procédé de traitement de tubes à rayons cathodiques en fin de vie pour la récupération de silicates solubles et en plomb
CN102431982A (zh) * 2011-09-26 2012-05-02 瓮福（集团）有限责任公司 一种磷酸脱砷方法
CN102730655B (zh) * 2012-06-26 2013-12-18 瓮福（集团）有限责任公司 肥料级磷酸微波加热制备高浓度磷酸的方法
WO2021188408A1 (fr) * 2020-03-16 2021-09-23 Dupont Safety & Construction, Inc. Concentration d'acide sulfurique
CN112279231B (zh) * 2020-11-10 2022-06-21 云南磷化集团有限公司 一种湿法磷酸真空脱氟的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1538089A (en) * 1922-03-23 1925-05-19 Fed Phosphorous Company Process for the purification of phosphoric acid
US1597984A (en) * 1923-09-13 1926-08-31 Bour Harry E La Method of concentrating and purification of phosphoric acid
DE2109970C3 (de) * 1971-03-03 1980-03-20 Hoechst Ag, 6000 Frankfurt Verfahren und Vorrichtung zur Entarsenierung von Polyphosphorsäure
US3873581A (en) * 1971-10-21 1975-03-25 Toms River Chemical Corp Process for reducing the level of contaminating mercury in aqueous solutions
DE2422902A1 (de) * 1974-05-11 1975-11-20 Kalk Chemische Fabrik Gmbh Verfahren zur herstellung von cadmiumsulfid aus phosphorsaeure
JPS53110997A (en) * 1977-03-10 1978-09-28 Mitsui Toatsu Chem Inc Purifying method for impure phosphoric acid
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra
DE3418241A1 (de) * 1984-05-16 1985-11-21 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur entfernung von arsen aus abfallschwefelsaeure

Also Published As

Publication number Publication date
ATE69035T1 (de) 1991-11-15
EP0232766A2 (fr) 1987-08-19
JPS62191409A (ja) 1987-08-21
US4777028A (en) 1988-10-11
DE3774141D1 (de) 1991-12-05
EP0232766A3 (en) 1988-12-21
ES2027235T3 (es) 1992-06-01
DE3604483A1 (de) 1987-08-20
EP0232766B1 (fr) 1991-10-30

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