FI47652C - Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si. - Google Patents

Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si.

Info

Publication number
FI47652C
FI47652C FI661783A FI178366A FI47652C FI 47652 C FI47652 C FI 47652C FI 661783 A FI661783 A FI 661783A FI 178366 A FI178366 A FI 178366A FI 47652 C FI47652 C FI 47652C
Authority
FI
Finland
Prior art keywords
preparation
phosphoric acid
calcium sulphate
sulphate hemihydrate
hemihydrate
Prior art date
Application number
FI661783A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI47652B (xx
Inventor
Pavonet
Original Assignee
Prayon
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 filed Critical Prayon
Publication of FI47652B publication Critical patent/FI47652B/fi
Application granted granted Critical
Publication of FI47652C publication Critical patent/FI47652C/fi

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)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Special Chairs (AREA)
FI661783A 1965-07-07 1966-07-04 Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si. FI47652C (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU49007 1965-07-07

Publications (2)

Publication Number Publication Date
FI47652B FI47652B (xx) 1973-10-31
FI47652C true FI47652C (fi) 1974-02-11

Family

ID=19724362

Family Applications (1)

Application Number Title Priority Date Filing Date
FI661783A FI47652C (fi) 1965-07-07 1966-07-04 Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si.

Country Status (16)

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

Families Citing this family (13)

* 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
FR2171861A1 (en) * 1972-02-11 1973-09-28 Cerphos Phosphoric acid prodn - with wet screening of digester product
DE2233189C2 (de) * 1972-07-06 1986-06-26 Ruhr-Stickstoff Ag, 4630 Bochum Verfahren zur Herstellung von reinem Calciumsulfathalbhydrat
US4059674A (en) * 1972-07-18 1977-11-22 Pullman Incorporated Method for manufacturing phosphoric acid and gypsum
SE440069B (sv) * 1982-12-22 1985-07-15 Boliden Ab Forfarande for omkristallisation av gips
ATE73425T1 (de) * 1985-12-23 1992-03-15 Prayon Rupel Societe Anonyme S Verfahren zur behandlung von alpha-calciumsulfat- halbhydrat und nach dem vefahren erhaltenes produkt.
BE1016065A3 (fr) * 2004-06-01 2006-02-07 Prayon Technologies Procede de production d'acide phosphorique.
BE1019055A3 (fr) 2009-12-02 2012-02-07 Prayon Technologies Procede de production d'acide phosphorique.
US9371230B2 (en) 2011-06-01 2016-06-21 Prayton Technologies Dihydrate-hemihydrate process for producing phosphoric acid
PL2771280T3 (pl) 2011-10-24 2018-10-31 Hydrometal Sa Sposób obróbki skał fosfatowych
CN104528798A (zh) * 2014-12-16 2015-04-22 中国科学院青海盐湖研究所 重结晶提纯低品位天然石膏或石膏尾矿的方法
DE102016212242B4 (de) 2016-07-05 2019-02-07 Technische Universität Bergakademie Freiberg Verfahren zur Herstellung von Phosphorsäure aus phosphorhaltigen Primär- und Sekundärrohstoffen
CN111807340B (zh) * 2019-04-10 2023-07-21 中石化南京工程有限公司 一种半水-二水法磷酸生产装置及方法

Also Published As

Publication number Publication date
SU378002A3 (xx) 1973-04-17
DK130955B (da) 1975-05-12
BE683739A (xx) 1967-01-06
OA02091A (fr) 1970-05-05
BG20319A3 (xx) 1975-11-05
NL6609093A (xx) 1967-01-09
DE1567821B1 (de) 1971-08-12
ES329179A1 (es) 1967-05-01
NO116287B (xx) 1969-03-03
IL26076A (en) 1970-07-19
DK130955C (xx) 1975-12-29
FI47652B (xx) 1973-10-31
GB1111078A (en) 1968-04-24
FR1485940A (fr) 1967-06-23
LU49007A1 (xx) 1967-01-09
SE336775B (xx) 1971-07-19
AT269064B (de) 1969-03-10

Similar Documents

Publication Publication Date Title
CH489441A (de) Verfahren zur Herstellung von a-Calciumsulfat-Halbhydrat
AT249637B (de) Verfahren zur Herstellung von Dicalciumphosphatdihydrat
FI47652C (fi) Menetelmä fosforihapon ja kalsiumsulfaatin hemihydraatin valmistamisek si.
FI42957C (fi) Menetelmä fosfori-, fosfoni- sekä tionofosfori-, tionofosfonihappoestereiden valmistamiseksi
CA718837A (en) Wet-process phosphoric acid manufacture by the semihydrate-dihydrate calcium sulphate method
CH482687A (de) Verfahren zur Herstellung von 3',5'- und 2',5'-Dinucleosidphosphaten
AT266678B (de) Vorrichtung zur Herstellung von gebranntem Gips
AT268201B (de) Verfahren zur Stabilisierung vom Dikalziumphosphatdihydrat
DK138941B (da) Kontinuerlig fremgangsmåde til fremstilling af phosphorsyre og gips.
ZA7151B (en) Process for the manufacture of an overburned gypsum
CA920772A (en) Process for the preparation of calcined gypsum
ZA701471B (en) Process for the production of defluorinated cement clinkers from phosphoric acid-by-product-gypsum
DK131143B (da) Fremgangsmåde til fremstilling af i det væsentlige vandfrit calciumsulfat.
CH479497A (de) Verfahren zur Herstellung von Zementklinkern
DK121162B (da) Fremgangsmåde til fremstilling af phosphorsyre og gips.
CA776577A (en) Production of phosphoric acid and gypsum
AT260943B (de) Verfahren zur Gewinnung von reinem 5-Amino-4-chlor-2-phenylpyridazin-3-on
YU39519B (en) Process for the manufacture of phosphoric acid and calcium sulfate dihydrate
AT264358B (de) Verfahren zur Herstellung von Weißzementklinkern
CH475186A (de) Verfahren zur Herstellung von Trialkylaminen
DK114183B (da) Fremgangsmåde til fremstilling af calciumsulfat-semihydrat.
FR1483486A (fr) Procédé de préparation de phosphate dicalcique dihydraté stabilisé
AU420533B2 (en) Method for manufacturing phosphoric acid and hemihydrate calcium sulphate bythe wet process
CH461480A (de) Verfahren zur Herstellung von 6a, 9a-Difluor-16-methylen-1,4-pregnadien-3,20-dion-11B,17a-diol
CA727036A (en) Production of calcium sulphate hemihydrate