AT346223B - Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren - Google Patents

Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren

Info

Publication number
AT346223B
AT346223B AT989274A AT989274A AT346223B AT 346223 B AT346223 B AT 346223B AT 989274 A AT989274 A AT 989274A AT 989274 A AT989274 A AT 989274A AT 346223 B AT346223 B AT 346223B
Authority
AT
Austria
Prior art keywords
plaster
fluorine
phosphoric acid
waste product
obtaining low
Prior art date
Application number
AT989274A
Other languages
English (en)
Other versions
ATA989274A (de
Inventor
Werner Dipl Ing Dr Czysch
Walter Dr Mueller
Heinz Dipl Ing Goeller
Original Assignee
Chemie Linz 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 Chemie Linz Ag filed Critical Chemie Linz Ag
Priority to AT989274A priority Critical patent/AT346223B/de
Priority to DE19752549625 priority patent/DE2549625A1/de
Priority to RO7584077A priority patent/RO69299A/ro
Priority to IN2306/CAL/75A priority patent/IN145328B/en
Priority to ZA757656A priority patent/ZA757656B/xx
Priority to FR7537273A priority patent/FR2294132A1/fr
Priority to IL48616A priority patent/IL48616A0/xx
Priority to SU7502196095A priority patent/SU577960A3/ru
Priority to BE162640A priority patent/BE836510A/xx
Priority to DD190027A priority patent/DD122059A1/xx
Priority to BR7508195*A priority patent/BR7508195A/pt
Priority to NL7514463A priority patent/NL7514463A/xx
Priority to US05/639,928 priority patent/US4026990A/en
Priority to JP50146947A priority patent/JPS5183897A/ja
Publication of ATA989274A publication Critical patent/ATA989274A/de
Application granted granted Critical
Publication of AT346223B publication Critical patent/AT346223B/de

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
    • C01B25/222—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
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Fertilizers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Processing Of Solid Wastes (AREA)
AT989274A 1974-12-11 1974-12-11 Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren AT346223B (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
AT989274A AT346223B (de) 1974-12-11 1974-12-11 Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren
DE19752549625 DE2549625A1 (de) 1974-12-11 1975-11-05 Verfahren zur herstellung von abfallgips
RO7584077A RO69299A (ro) 1974-12-11 1975-12-02 Procedeu de obtinere a fosfoghipsului cu continut redus de fluor
IN2306/CAL/75A IN145328B (de) 1974-12-11 1975-12-04
FR7537273A FR2294132A1 (fr) 1974-12-11 1975-12-05 Procede pour la production de gypse de recuperation
ZA757656A ZA757656B (en) 1974-12-11 1975-12-05 The purification of waste gypsum
IL48616A IL48616A0 (en) 1974-12-11 1975-12-08 The purification of waste gypsum
SU7502196095A SU577960A3 (ru) 1974-12-11 1975-12-09 Способ получени фосфорной кислоты
BE162640A BE836510A (fr) 1974-12-11 1975-12-10 Procede pour la production de gypse de recuperation
DD190027A DD122059A1 (de) 1974-12-11 1975-12-10
BR7508195*A BR7508195A (pt) 1974-12-11 1975-12-10 Processo para a producao de gesso residual
NL7514463A NL7514463A (nl) 1974-12-11 1975-12-11 Werkwijze voor het bereiden van afvalgips.
US05/639,928 US4026990A (en) 1974-12-11 1975-12-11 Production of low-fluorine gypsum as a by-product in a phosphoric acid process
JP50146947A JPS5183897A (de) 1974-12-11 1975-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT989274A AT346223B (de) 1974-12-11 1974-12-11 Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren

Publications (2)

Publication Number Publication Date
ATA989274A ATA989274A (de) 1978-02-15
AT346223B true AT346223B (de) 1978-10-25

Family

ID=3618235

Family Applications (1)

Application Number Title Priority Date Filing Date
AT989274A AT346223B (de) 1974-12-11 1974-12-11 Verfahren zur gewinnung von fluorarmem gips als abfallprodukt aus dem nassphosphorsaeureverfahren

Country Status (14)

Country Link
US (1) US4026990A (de)
JP (1) JPS5183897A (de)
AT (1) AT346223B (de)
BE (1) BE836510A (de)
BR (1) BR7508195A (de)
DD (1) DD122059A1 (de)
DE (1) DE2549625A1 (de)
FR (1) FR2294132A1 (de)
IL (1) IL48616A0 (de)
IN (1) IN145328B (de)
NL (1) NL7514463A (de)
RO (1) RO69299A (de)
SU (1) SU577960A3 (de)
ZA (1) ZA757656B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002266A1 (en) * 1981-12-21 1983-07-07 United States Gypsum Co Conversion of fluoroanhydrite to plaster
US5236679A (en) * 1992-05-06 1993-08-17 Freeport-Mcmoran Resource Partners Removal of aluminum contamination during production of phosphoric acid
WO1999041065A1 (en) 1996-03-06 1999-08-19 Compositech, Llc. Thermoplastic articles made from recycled products and process for making
CN101506120B (zh) * 2006-08-25 2012-09-05 Acc有限公司 一种惰化磷石膏中杂质的方法
CN102093072B (zh) * 2010-12-08 2013-01-09 济南大学 一种氟石膏发泡材料及其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858203A (en) * 1931-01-13 1932-05-10 Rumford Chemical Works Purification of phosphoric acid
US1969449A (en) * 1931-10-17 1934-08-07 Rumford Chemical Works Process of producing by-product calcium sulphate
US2123785A (en) * 1936-03-02 1938-07-12 Victor Chemical Works Removal of fluorine from phosphoric acid
US3151941A (en) * 1960-05-02 1964-10-06 Smith Douglass Company Inc Defluorination of peosphoric acid
US3193351A (en) * 1961-07-05 1965-07-06 Nat Distillers Chem Corp Removal of fluorine from wet process prosphoric acid
BE621425A (de) * 1962-06-23
US3323864A (en) * 1963-08-29 1967-06-06 Fmc Corp Production of phosphoric acid from a phosphatic ore
GB1248037A (en) * 1968-01-13 1971-09-29 Fisons Ltd Calcium sulphate
US3743725A (en) * 1971-11-04 1973-07-03 Atlantic Richfield Co Process for the recovery in useful form of fluorine values from phosphate rock while producing phosphoric acid
US3764658A (en) * 1972-01-26 1973-10-09 United States Steel Corp Production of fluosilicic acid

Also Published As

Publication number Publication date
FR2294132A1 (fr) 1976-07-09
SU577960A3 (ru) 1977-10-25
DD122059A1 (de) 1976-09-12
FR2294132B1 (de) 1978-05-12
US4026990A (en) 1977-05-31
RO69299A (ro) 1980-06-15
IN145328B (de) 1978-09-23
IL48616A0 (en) 1976-02-29
DE2549625A1 (de) 1976-06-16
JPS5183897A (de) 1976-07-22
ATA989274A (de) 1978-02-15
ZA757656B (en) 1976-11-24
NL7514463A (nl) 1976-06-15
BE836510A (fr) 1976-06-10
BR7508195A (pt) 1976-08-24

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee