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MA20585A1 - Procede pour eliminer l'arsenic de solutions d'acides phosphoriques - Google Patents

Procede pour eliminer l'arsenic de solutions d'acides phosphoriques

Info

Publication number
MA20585A1
MA20585A1 MA20811A MA20811A MA20585A1 MA 20585 A1 MA20585 A1 MA 20585A1 MA 20811 A MA20811 A MA 20811A MA 20811 A MA20811 A MA 20811A MA 20585 A1 MA20585 A1 MA 20585A1
Authority
MA
Morocco
Prior art keywords
phosphoric acid
acid solutions
removing arsenic
arsenic
solutions
Prior art date
Application number
MA20811A
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 MA20585A1 publication Critical patent/MA20585A1/fr

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
    • 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
    • C01B25/26—Phosphates
    • C01B25/30—Alkali metal phosphates
    • C01B25/308—Methods for converting an alkali metal orthophosphate into another one; Purification; Decolorasing; Dehydrating; Drying
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Removal Of Specific Substances (AREA)
MA20811A 1984-12-10 1985-12-05 Procede pour eliminer l'arsenic de solutions d'acides phosphoriques MA20585A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843444975 DE3444975A1 (de) 1984-12-10 1984-12-10 Verfahren zur entarsenierung von phosphorsauren loesungen

Publications (1)

Publication Number Publication Date
MA20585A1 true MA20585A1 (fr) 1986-07-01

Family

ID=6252363

Family Applications (1)

Application Number Title Priority Date Filing Date
MA20811A MA20585A1 (fr) 1984-12-10 1985-12-05 Procede pour eliminer l'arsenic de solutions d'acides phosphoriques

Country Status (9)

Country Link
US (1) US4668492A (fr)
EP (1) EP0184690B1 (fr)
JP (1) JPS61141607A (fr)
CA (1) CA1261115A (fr)
DE (2) DE3444975A1 (fr)
ES (1) ES8605444A1 (fr)
IL (1) IL77050A0 (fr)
MA (1) MA20585A1 (fr)
ZA (1) ZA859381B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804526A (en) * 1987-10-13 1989-02-14 Fmc Corporation Process for purifying phosphoric acid for electrical semiconductor use
US4824650A (en) * 1988-08-23 1989-04-25 Segrist Lloyd E Method for extracting arsenic and heavy metals from phosphoric acid
CN102849698B (zh) * 2012-09-28 2014-07-16 凯恩德利(北京)科贸有限公司 高效磷酸除砷方法及装置
CN103979510A (zh) * 2014-04-25 2014-08-13 防城港博森化工有限公司 一种磷酸生产中的脱砷方法
CN109809378A (zh) * 2019-03-27 2019-05-28 重庆万盛川东化工有限公司 食品磷酸生产工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL295743A (fr) * 1962-07-25
US3421845A (en) * 1965-06-07 1969-01-14 Hooker Chemical Corp Production of sodium phosphates
JPS5018388A (fr) * 1973-06-21 1975-02-26
IT1125158B (it) * 1976-11-19 1986-05-14 Sarda Off Mec Miglioramenti nei procedimenti per la preparazione di tripolifosfato sodico
US4485078A (en) * 1982-03-16 1984-11-27 Agrico Chemical Company Process for producing wet process phosphoric acid from phosphate rocks containing fluochlorapatite and related minerals
DE3421297A1 (de) * 1984-06-08 1985-12-12 Basf Ag, 6700 Ludwigshafen Verfahren zur reduzierung des schwefelsaeuregehaltes und des gehaltes an verunreinigungen in nassverfahrensphosphorsaeure

Also Published As

Publication number Publication date
ES549773A0 (es) 1986-04-01
US4668492A (en) 1987-05-26
EP0184690A2 (fr) 1986-06-18
EP0184690B1 (fr) 1990-05-02
IL77050A0 (en) 1986-04-29
ES8605444A1 (es) 1986-04-01
DE3577431D1 (de) 1990-06-07
DE3444975A1 (de) 1986-06-12
CA1261115A (fr) 1989-09-26
EP0184690A3 (en) 1988-03-23
JPS61141607A (ja) 1986-06-28
ZA859381B (en) 1986-08-27

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