NO155960C - Fremgangsmaate for fremstilling av jernfri crooh. - Google Patents

Fremgangsmaate for fremstilling av jernfri crooh.

Info

Publication number
NO155960C
NO155960C NO812598A NO812598A NO155960C NO 155960 C NO155960 C NO 155960C NO 812598 A NO812598 A NO 812598A NO 812598 A NO812598 A NO 812598A NO 155960 C NO155960 C NO 155960C
Authority
NO
Norway
Prior art keywords
crooh
procedure
free
manufacturing iron
iron
Prior art date
Application number
NO812598A
Other languages
English (en)
Norwegian (no)
Other versions
NO155960B (no
NO812598L (no
Inventor
Seppo Olavi Heimala
Stig Erik Hultholm
Frans Heikki Tuovinen
Original Assignee
Outokumpu Oy
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 Outokumpu Oy filed Critical Outokumpu Oy
Publication of NO812598L publication Critical patent/NO812598L/no
Publication of NO155960B publication Critical patent/NO155960B/no
Publication of NO155960C publication Critical patent/NO155960C/no

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture Of Iron (AREA)
  • Catalysts (AREA)
NO812598A 1980-08-05 1981-07-29 Fremgangsmaate for fremstilling av jernfri crooh. NO155960C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI802445A FI61855C (fi) 1980-08-05 1980-08-05 Foerfarande foer framstaellning av en jaernfri krom(iii)foerening

Publications (3)

Publication Number Publication Date
NO812598L NO812598L (no) 1982-02-08
NO155960B NO155960B (no) 1987-03-23
NO155960C true NO155960C (no) 1987-07-01

Family

ID=8513669

Family Applications (1)

Application Number Title Priority Date Filing Date
NO812598A NO155960C (no) 1980-08-05 1981-07-29 Fremgangsmaate for fremstilling av jernfri crooh.

Country Status (8)

Country Link
US (1) US4393029A (fi)
JP (1) JPS57118030A (fi)
DE (1) DE3126681A1 (fi)
FI (1) FI61855C (fi)
FR (1) FR2493297B1 (fi)
GB (1) GB2081696B (fi)
NO (1) NO155960C (fi)
SE (1) SE453490B (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118559B (en) * 1982-02-02 1985-07-31 Giuliano Guardini Process for extracting protein and chromium from chrome tanned hide wastes
DE59003699D1 (de) * 1989-12-16 1994-01-13 Bayer Ag Verfahren zur Herstellung von Chromsäure.
DE59003697D1 (de) * 1989-12-16 1994-01-13 Bayer Ag Verfahren zur Herstellung von Chromsäure.
WO2004083123A1 (fr) * 2003-03-19 2004-09-30 Institute Of Process Engineering Chinese Academy Of Sciences Procede d'obtention de chromates de metal alcalin

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB204886A (en) * 1922-09-22 1923-10-11 Griesheim Elektron Chem Fab Process for the production of chromium oxide from chrome iron ore
CH181527A (de) * 1934-08-14 1935-12-31 Wydler Ernst Verfahren zur Gewinnung von reinem Chromihydroxyd aus unreinen Chromisulfatlösungen.
JPS4717697U (fi) * 1971-03-30 1972-10-30
US3896209A (en) * 1973-01-22 1975-07-22 Du Pont Reduction of hexavalent chromium
US3961029A (en) * 1973-05-21 1976-06-01 Tokico Ltd. Process for recovering chromic acid solution from a waste liquor containing chromic ions
US4108596A (en) * 1975-07-11 1978-08-22 Revere Copper And Brass, Incorporated Recovery of chromium values from waste streams by the use of alkaline magnesium compounds
DE2710175C2 (de) * 1977-03-09 1986-08-28 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Chromgerbstoff und Glaubersalz
US4086150A (en) * 1977-06-27 1978-04-25 Huron Chemicals Limited Chromate removal by precipitation
FI60381C (fi) * 1979-02-06 1982-01-11 Outokumpu Oy Foerfarande foer framstaellning av en jaernfri krom(iii)foerening
US4207295A (en) * 1979-02-13 1980-06-10 Union Carbide Corporation Processing of chromium ore
US4259297A (en) * 1979-09-04 1981-03-31 Olin Corporation Chromate removal from concentrated chlorate solution by chemical precipitation

Also Published As

Publication number Publication date
NO155960B (no) 1987-03-23
FI61855B (fi) 1982-06-30
FI802445A (fi) 1982-02-06
FR2493297B1 (fr) 1985-11-22
GB2081696B (en) 1984-06-27
JPS57118030A (en) 1982-07-22
NO812598L (no) 1982-02-08
GB2081696A (en) 1982-02-24
DE3126681A1 (de) 1982-03-18
JPH0116777B2 (fi) 1989-03-27
FI61855C (fi) 1982-10-11
FR2493297A1 (fr) 1982-05-07
US4393029A (en) 1983-07-12
SE8104607L (sv) 1982-02-06
SE453490B (sv) 1988-02-08

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