CH409417A - Cryolite recovery process - Google Patents
Cryolite recovery processInfo
- Publication number
- CH409417A CH409417A CH399862A CH399862A CH409417A CH 409417 A CH409417 A CH 409417A CH 399862 A CH399862 A CH 399862A CH 399862 A CH399862 A CH 399862A CH 409417 A CH409417 A CH 409417A
- Authority
- CH
- Switzerland
- Prior art keywords
- recovery process
- cryolite
- cryolite recovery
- recovery
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/18—Electrolytes
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/08—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals with sodium carbonate, e.g. sinter processes
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
- C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US100268A US3106448A (en) | 1961-04-03 | 1961-04-03 | Recovery of cryolite |
Publications (1)
Publication Number | Publication Date |
---|---|
CH409417A true CH409417A (en) | 1966-03-15 |
Family
ID=22278904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH399862A CH409417A (en) | 1961-04-03 | 1962-04-03 | Cryolite recovery process |
Country Status (6)
Country | Link |
---|---|
US (1) | US3106448A (en) |
CH (1) | CH409417A (en) |
DE (1) | DE1207362B (en) |
ES (1) | ES276075A1 (en) |
GB (1) | GB981243A (en) |
SE (1) | SE310658B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1269677A (en) * | 1960-07-04 | 1961-08-18 | Electrochimie Soc | Fluorine recovery process |
US3512927A (en) * | 1965-07-26 | 1970-05-19 | Anson G Betts | Chemically treating phosphorite and obtaining separate products of fluorine and of phosphorus |
US4113831A (en) * | 1975-10-02 | 1978-09-12 | National Fluoride And Chemical Corporation | Recovery of sodium fluoride and other chemicals from spent carbon liners |
GB8301974D0 (en) * | 1983-01-25 | 1983-02-23 | Alcan Int Ltd | Aluminium fluoride from scrap |
US4597953A (en) * | 1985-02-20 | 1986-07-01 | Aluminum Company Of America | Halogen recovery |
US4889695A (en) * | 1985-02-20 | 1989-12-26 | Aluminum Company Of America | Reclaiming spent potlining |
US5164174A (en) * | 1991-10-11 | 1992-11-17 | Reynolds Metals Company | Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment |
ZA935347B (en) * | 1992-07-24 | 1994-03-14 | Comalco Alu | Treatment of solid material |
CN104499000A (en) * | 2014-12-12 | 2015-04-08 | 平顶山华兴浮选工程技术服务有限公司 | Beneficiation treatment method for electrolytic aluminium carbon residues |
CN106086938B (en) * | 2016-06-30 | 2019-01-04 | 中南大学 | A kind of method that electrolyte in aluminium electroloysis waste lining is recycled in the leaching of ultrasonic wave auxiliary pressurized alkali |
CN106077040B (en) * | 2016-06-30 | 2019-01-15 | 中南大学 | A kind of method of ultrasonic wave auxiliary alkali leaching process aluminum electrolytic waste and old cathode carbon block |
CN112624101A (en) * | 2020-12-23 | 2021-04-09 | 河南省冶金研究所有限责任公司 | Process for wet treatment of electrolytic aluminum waste cathode material |
CN113426807B (en) * | 2021-06-29 | 2022-05-17 | 云南云铝润鑫铝业有限公司 | Method for combined treatment and comprehensive utilization of resources of dangerous waste residues generated in aluminum electrolysis |
CN113426808B (en) * | 2021-06-29 | 2022-05-17 | 云南云铝润鑫铝业有限公司 | Method for recovering fluoride salt from aluminum electrolysis overhaul residues through pressurized alkaline leaching |
CN114074949B (en) * | 2021-10-18 | 2023-06-27 | 郑州大学 | Catalytic dissociation method for fluoride in waste material of electrolytic tank |
CN115536050A (en) * | 2022-11-02 | 2022-12-30 | 中南大学 | Process method for preparing cryolite by aluminum ash recombination |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1871723A (en) * | 1929-05-29 | 1932-08-16 | Aluminum Co Of America | Process for the recovery of cryolite |
DE679849C (en) * | 1936-11-17 | 1939-08-15 | Ruetgerswerke Akt Ges | Production of aluminum-fluorine compounds from used furnace feed from the aluminum electrolysis smelting furnace |
US2196077A (en) * | 1937-06-25 | 1940-04-02 | Aluminum Co Of America | Method of producing sodium aluminum fluoride |
US2567544A (en) * | 1945-01-26 | 1951-09-11 | Alcan Aluminium Ltd | Process for the manufacture of sodium aluminum fluoride |
US2732283A (en) * | 1951-02-23 | 1956-01-24 | O minutes | |
DE925407C (en) * | 1952-10-26 | 1955-03-21 | Vaw Ver Aluminium Werke Ag | Process for the production of cryolite from materials containing aluminum and fluorine compounds |
CH319303A (en) * | 1952-11-26 | 1957-02-15 | Vaw Ver Aluminium Werke Ag | Process for recovering cryolite from the coal floor of electrolytic furnaces |
-
1961
- 1961-04-03 US US100268A patent/US3106448A/en not_active Expired - Lifetime
-
1962
- 1962-03-29 SE SE3521/62A patent/SE310658B/xx unknown
- 1962-03-30 DE DEA39851A patent/DE1207362B/en active Pending
- 1962-04-02 ES ES276075A patent/ES276075A1/en not_active Expired
- 1962-04-02 GB GB12548/62A patent/GB981243A/en not_active Expired
- 1962-04-03 CH CH399862A patent/CH409417A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB981243A (en) | 1965-01-20 |
SE310658B (en) | 1969-05-12 |
ES276075A1 (en) | 1962-07-16 |
US3106448A (en) | 1963-10-08 |
DE1207362B (en) | 1965-12-23 |
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