BR8403902A - Processo para a diminuicao do teor de fluor de um acido fosforico obtido por processo por via umida - Google Patents

Processo para a diminuicao do teor de fluor de um acido fosforico obtido por processo por via umida

Info

Publication number
BR8403902A
BR8403902A BR8403902A BR8403902A BR8403902A BR 8403902 A BR8403902 A BR 8403902A BR 8403902 A BR8403902 A BR 8403902A BR 8403902 A BR8403902 A BR 8403902A BR 8403902 A BR8403902 A BR 8403902A
Authority
BR
Brazil
Prior art keywords
reducing
phosphoric acid
acid obtained
humid
fluor
Prior art date
Application number
BR8403902A
Other languages
English (en)
Inventor
Reinhard Gradl
Guenter Schimmel
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 BR8403902A publication Critical patent/BR8403902A/pt

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
    • C01B25/46—Preparation involving solvent-solvent extraction
    • C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
    • 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
    • C01B25/46—Preparation involving solvent-solvent extraction
    • C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
    • C01B25/462—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being alcohol or a mixture of alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Removal Of Specific Substances (AREA)
BR8403902A 1983-08-06 1984-08-03 Processo para a diminuicao do teor de fluor de um acido fosforico obtido por processo por via umida BR8403902A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833328499 DE3328499A1 (de) 1983-08-06 1983-08-06 Verfahren zur verminderung des fluorgehaltes einer nassverfahrensphosphorsaeure

Publications (1)

Publication Number Publication Date
BR8403902A true BR8403902A (pt) 1985-07-09

Family

ID=6205992

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8403902A BR8403902A (pt) 1983-08-06 1984-08-03 Processo para a diminuicao do teor de fluor de um acido fosforico obtido por processo por via umida

Country Status (7)

Country Link
US (1) US4540557A (pt)
EP (1) EP0133490B1 (pt)
BR (1) BR8403902A (pt)
DE (2) DE3328499A1 (pt)
ES (1) ES534907A0 (pt)
IL (1) IL72414A (pt)
ZA (1) ZA846018B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3505247A1 (de) * 1985-02-15 1986-08-21 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von nassverfahrensphosphorsaeure
US5531903A (en) * 1995-03-15 1996-07-02 Cominco Ltd. Fluoride removal from metal sulphate solution and a method of waste utilization
CN102732722B (zh) * 2012-05-21 2016-05-04 贵州宏达环保科技有限公司 一种萃取脱除氟、氯的湿法炼锌方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229602B1 (de) * 1972-06-19 1973-09-27 Chemische Fabrik Budenheim, Rudolf A. Oetker, 6501 Budenheim Verfahren zur Reinigung von technischer Phosphorsaure
FR2281892A1 (fr) * 1974-08-13 1976-03-12 Rhone Poulenc Ind Procede de defluoration d'acide phosphorique
DE2538410A1 (de) * 1975-08-29 1977-03-10 Giulini Gmbh Geb Verfahren zur reinigung von nassverfahrensphosphorsaeure, insbesondere fluorentfernung

Also Published As

Publication number Publication date
ZA846018B (en) 1985-04-24
IL72414A0 (en) 1984-11-30
EP0133490A3 (en) 1985-06-05
EP0133490B1 (de) 1987-05-13
EP0133490A2 (de) 1985-02-27
ES8507079A1 (es) 1985-09-01
US4540557A (en) 1985-09-10
DE3463642D1 (en) 1987-06-19
ES534907A0 (es) 1985-09-01
IL72414A (en) 1987-07-31
DE3328499A1 (de) 1985-02-14

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Legal Events

Date Code Title Description
MM Lapse due to non-payment of fees (art. 50)