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
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)
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)
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 |
EP0433750B1 (de) * | 1989-12-16 | 1993-12-01 | Bayer Ag | Verfahren zur Herstellung von Chromsäure |
DE59003697D1 (de) * | 1989-12-16 | 1994-01-13 | Bayer Ag | Verfahren zur Herstellung von Chromsäure. |
AU2003227163A1 (en) * | 2003-03-19 | 2004-10-11 | Institute Of Process Engineering Chinese Academy Of Sciences | Method for production of alkali metal chromates |
Family Cites Families (11)
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 |
-
1980
- 1980-08-05 FI FI802445A patent/FI61855C/fi not_active IP Right Cessation
-
1981
- 1981-07-07 DE DE19813126681 patent/DE3126681A1/de not_active Ceased
- 1981-07-16 FR FR8113873A patent/FR2493297B1/fr not_active Expired
- 1981-07-22 US US06/286,038 patent/US4393029A/en not_active Expired - Fee Related
- 1981-07-29 NO NO812598A patent/NO155960C/no unknown
- 1981-07-30 SE SE8104607A patent/SE453490B/sv not_active IP Right Cessation
- 1981-07-31 GB GB8123484A patent/GB2081696B/en not_active Expired
- 1981-08-05 JP JP56121979A patent/JPS57118030A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS57118030A (en) | 1982-07-22 |
SE8104607L (sv) | 1982-02-06 |
FR2493297B1 (fr) | 1985-11-22 |
GB2081696B (en) | 1984-06-27 |
FR2493297A1 (fr) | 1982-05-07 |
NO812598L (no) | 1982-02-08 |
FI61855B (fi) | 1982-06-30 |
GB2081696A (en) | 1982-02-24 |
JPH0116777B2 (fi) | 1989-03-27 |
SE453490B (sv) | 1988-02-08 |
FI61855C (fi) | 1982-10-11 |
US4393029A (en) | 1983-07-12 |
NO155960B (no) | 1987-03-23 |
DE3126681A1 (de) | 1982-03-18 |
FI802445A (fi) | 1982-02-06 |
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