FR1485940A - Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate - Google Patents

Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate

Info

Publication number
FR1485940A
FR1485940A FR67756A FR67756A FR1485940A FR 1485940 A FR1485940 A FR 1485940A FR 67756 A FR67756 A FR 67756A FR 67756 A FR67756 A FR 67756A FR 1485940 A FR1485940 A FR 1485940A
Authority
FR
France
Prior art keywords
manufacture
phosphoric acid
calcium sulfate
wet process
sulfate hemihydrate
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR67756A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prayon SA
Original Assignee
Prayon SA
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 Prayon SA filed Critical Prayon SA
Priority to FR67756A priority Critical patent/FR1485940A/en
Application granted granted Critical
Publication of FR1485940A publication Critical patent/FR1485940A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Special Chairs (AREA)
FR67756A 1965-07-07 1966-06-30 Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate Expired FR1485940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR67756A FR1485940A (en) 1965-07-07 1966-06-30 Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU49007 1965-07-07
FR67756A FR1485940A (en) 1965-07-07 1966-06-30 Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate

Publications (1)

Publication Number Publication Date
FR1485940A true FR1485940A (en) 1967-06-23

Family

ID=19724362

Family Applications (1)

Application Number Title Priority Date Filing Date
FR67756A Expired FR1485940A (en) 1965-07-07 1966-06-30 Wet process for the manufacture of phosphoric acid and calcium sulfate hemihydrate

Country Status (16)

Country Link
AT (1) AT269064B (en)
BE (1) BE683739A (en)
BG (1) BG20319A3 (en)
DE (1) DE1567821B1 (en)
DK (1) DK130955B (en)
ES (1) ES329179A1 (en)
FI (1) FI47652C (en)
FR (1) FR1485940A (en)
GB (1) GB1111078A (en)
IL (1) IL26076A (en)
LU (1) LU49007A1 (en)
NL (1) NL6609093A (en)
NO (1) NO116287B (en)
OA (1) OA02091A (en)
SE (1) SE336775B (en)
SU (1) SU378002A3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2171861A1 (en) * 1972-02-11 1973-09-28 Cerphos Phosphoric acid prodn - with wet screening of digester product
WO2005118470A1 (en) * 2004-06-01 2005-12-15 Prayon Technologies Method for producing phosphoric acid
WO2011067321A1 (en) 2009-12-02 2011-06-09 Prayon Technologies Method for producing phosphoric acid
WO2012163425A1 (en) 2011-06-01 2012-12-06 Prayon Technologies Dihydrate-hemihydrate process for producing phosphoric acid
WO2013060689A1 (en) 2011-10-24 2013-05-02 Prayon Sa Method for treating phosphate rock

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984525A (en) * 1967-02-01 1976-10-05 Albright & Wilson Limited Manufacture of phosphoric acid
DE2233189C2 (en) * 1972-07-06 1986-06-26 Ruhr-Stickstoff Ag, 4630 Bochum Process for the production of pure calcium sulfate hemihydrate
US4059674A (en) * 1972-07-18 1977-11-22 Pullman Incorporated Method for manufacturing phosphoric acid and gypsum
SE440069B (en) * 1982-12-22 1985-07-15 Boliden Ab PROCEDURE FOR RECYCLING GYPS
DE3585627D1 (en) * 1985-12-23 1992-04-16 Prayon Rupel S A Soc Chimique METHOD FOR TREATING ALPHA CALCIUM SULFATE SEMI-HYDRATE AND PRODUCT OBTAINED BY THE PROCEDURE.
CN104528798A (en) * 2014-12-16 2015-04-22 中国科学院青海盐湖研究所 Method for purifying low-grade natural gypsum or gypsum tailings by recrystallization
DE102016212242B4 (en) 2016-07-05 2019-02-07 Technische Universität Bergakademie Freiberg Process for the production of phosphoric acid from phosphorus-containing primary and secondary raw materials
CN111807340B (en) * 2019-04-10 2023-07-21 中石化南京工程有限公司 Semi-water-dihydrate phosphoric acid production device and method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2171861A1 (en) * 1972-02-11 1973-09-28 Cerphos Phosphoric acid prodn - with wet screening of digester product
WO2005118470A1 (en) * 2004-06-01 2005-12-15 Prayon Technologies Method for producing phosphoric acid
EA010973B1 (en) * 2004-06-01 2008-12-30 Прэйон Текнолоджиз Method for production of phosphoric acid
CN1960941B (en) * 2004-06-01 2010-09-08 普拉昂技术公司 Method for producing phosphoric acid
WO2011067321A1 (en) 2009-12-02 2011-06-09 Prayon Technologies Method for producing phosphoric acid
US9255006B2 (en) 2009-12-02 2016-02-09 Prayon Technologies Method for producing phosphoric acid
WO2012163425A1 (en) 2011-06-01 2012-12-06 Prayon Technologies Dihydrate-hemihydrate process for producing phosphoric acid
US9371230B2 (en) 2011-06-01 2016-06-21 Prayton Technologies Dihydrate-hemihydrate process for producing phosphoric acid
WO2013060689A1 (en) 2011-10-24 2013-05-02 Prayon Sa Method for treating phosphate rock

Also Published As

Publication number Publication date
DK130955C (en) 1975-12-29
ES329179A1 (en) 1967-05-01
SE336775B (en) 1971-07-19
DK130955B (en) 1975-05-12
SU378002A3 (en) 1973-04-17
NO116287B (en) 1969-03-03
BE683739A (en) 1967-01-06
FI47652C (en) 1974-02-11
OA02091A (en) 1970-05-05
GB1111078A (en) 1968-04-24
LU49007A1 (en) 1967-01-09
IL26076A (en) 1970-07-19
AT269064B (en) 1969-03-10
NL6609093A (en) 1967-01-09
FI47652B (en) 1973-10-31
DE1567821B1 (en) 1971-08-12
BG20319A3 (en) 1975-11-05

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