ZA861099B - Process for making wet-process phosphoric acid - Google Patents

Process for making wet-process phosphoric acid

Info

Publication number
ZA861099B
ZA861099B ZA861099A ZA861099A ZA861099B ZA 861099 B ZA861099 B ZA 861099B ZA 861099 A ZA861099 A ZA 861099A ZA 861099 A ZA861099 A ZA 861099A ZA 861099 B ZA861099 B ZA 861099B
Authority
ZA
South Africa
Prior art keywords
phosphoric acid
making wet
process phosphoric
wet
making
Prior art date
Application number
ZA861099A
Other languages
English (en)
Inventor
Friedrich Kolkmann
Herbert Ressel
Reinhard Gradl
Guenther 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6262637&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA861099(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of ZA861099B publication Critical patent/ZA861099B/xx

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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/2208—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/225—Dihydrate process
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
    • C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
    • C01B25/226—Hemihydrate process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Removal Of Specific Substances (AREA)
  • Silicon Compounds (AREA)
ZA861099A 1985-02-15 1986-02-14 Process for making wet-process phosphoric acid ZA861099B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853505247 DE3505247A1 (de) 1985-02-15 1985-02-15 Verfahren zur herstellung von nassverfahrensphosphorsaeure

Publications (1)

Publication Number Publication Date
ZA861099B true ZA861099B (en) 1986-10-29

Family

ID=6262637

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA861099A ZA861099B (en) 1985-02-15 1986-02-14 Process for making wet-process phosphoric acid

Country Status (5)

Country Link
US (1) US4683127A (es)
EP (1) EP0191325B1 (es)
DE (2) DE3505247A1 (es)
ES (1) ES8800114A1 (es)
ZA (1) ZA861099B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0640518Y2 (ja) * 1988-01-26 1994-10-26 池田物産株式会社 リヤシートバックのロック装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520273A (en) 1974-07-06 1978-08-02 Fisons Ltd Phosphoric acid and gypsum from phosphatic material
US4132765A (en) 1975-06-26 1979-01-02 E. I. Du Pont De Nemours And Company Recovery of fluoride values
FR2507170A2 (fr) * 1976-02-26 1982-12-10 Ind Chimiques Maghrebines Procede de clarification et de defluoration simultanees de l'acide phosphorique et acide obtenu par ledit procede
DE3202659A1 (de) * 1982-01-28 1983-08-04 Hoechst Ag, 6230 Frankfurt Verfahren zur reinigung von nassverfahrensphosphorsaeure
DE3328499A1 (de) * 1983-08-06 1985-02-14 Hoechst Ag, 6230 Frankfurt Verfahren zur verminderung des fluorgehaltes einer nassverfahrensphosphorsaeure

Also Published As

Publication number Publication date
US4683127A (en) 1987-07-28
EP0191325B1 (de) 1991-11-13
DE3682407D1 (de) 1991-12-19
DE3505247A1 (de) 1986-08-21
ES551985A0 (es) 1987-11-16
EP0191325A2 (de) 1986-08-20
ES8800114A1 (es) 1987-11-16
EP0191325A3 (en) 1989-01-11

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