CH409417A - Procédé de récupération de la cryolite - Google Patents

Procédé de récupération de la cryolite

Info

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
Application number
CH399862A
Other languages
English (en)
Inventor
Harry Whicher Charles
Gordon Nickle Alexander
Krzysztof Dolega-Kowal Andrzej
Original Assignee
Aluminium Lab Ltd
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 Aluminium Lab Ltd filed Critical Aluminium Lab Ltd
Publication of CH409417A publication Critical patent/CH409417A/fr

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
CH399862A 1961-04-03 1962-04-03 Procédé de récupération de la cryolite CH409417A (fr)

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 (fr) 1966-03-15

Family

ID=22278904

Family Applications (1)

Application Number Title Priority Date Filing Date
CH399862A CH409417A (fr) 1961-04-03 1962-04-03 Procédé de récupération de la cryolite

Country Status (6)

Country Link
US (1) US3106448A (fr)
CH (1) CH409417A (fr)
DE (1) DE1207362B (fr)
ES (1) ES276075A1 (fr)
GB (1) GB981243A (fr)
SE (1) SE310658B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1269677A (fr) * 1960-07-04 1961-08-18 Electrochimie Soc Procédé de récupération du fluor
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
US4889695A (en) * 1985-02-20 1989-12-26 Aluminum Company Of America Reclaiming spent potlining
US4597953A (en) * 1985-02-20 1986-07-01 Aluminum Company Of America Halogen recovery
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
US5776426A (en) * 1992-07-24 1998-07-07 Comalco Aluminium Limited Treatment of solid material containing fluoride and sodium including mixing with caustic liquor and lime
CN104499000A (zh) * 2014-12-12 2015-04-08 平顶山华兴浮选工程技术服务有限公司 一种电解铝碳渣的选矿处理方法
CN106077040B (zh) * 2016-06-30 2019-01-15 中南大学 一种超声波辅助碱浸处理铝电解废旧阴极炭块的方法
CN106086938B (zh) * 2016-06-30 2019-01-04 中南大学 一种超声波辅助加压碱浸回收铝电解废槽衬中电解质的方法
CN112624101A (zh) * 2020-12-23 2021-04-09 河南省冶金研究所有限责任公司 一种湿法处理电解铝废阴极材料的工艺
CN113426807B (zh) * 2021-06-29 2022-05-17 云南云铝润鑫铝业有限公司 铝电解危废渣联合处理和资源综合利用方法
CN113426808B (zh) * 2021-06-29 2022-05-17 云南云铝润鑫铝业有限公司 一种铝电解大修渣加压碱浸回收氟化盐的方法
CN114074949B (zh) * 2021-10-18 2023-06-27 郑州大学 一种电解槽废料中氟化物的催化解离方法
CN115536050A (zh) * 2022-11-02 2022-12-30 中南大学 一种利用铝灰重组制备冰晶石的工艺方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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 (de) * 1936-11-17 1939-08-15 Ruetgerswerke Akt Ges Herstellung von Aluminium-Fluor-Verbindungen aus verbrauchtem Ofenfutter der Aluminium-Elektrolyse-Schmelzoefen
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
FR65924E (fr) * 1951-02-23 1956-03-27
DE925407C (de) * 1952-10-26 1955-03-21 Vaw Ver Aluminium Werke Ag Verfahren zur Gewinnung von Kryolith aus Aluminium- und Fluorverbindungen enthaltenden Stoffen
CH319303A (de) * 1952-11-26 1957-02-15 Vaw Ver Aluminium Werke Ag Verfahren zur Rückgewinnung von Kryolith aus dem Kohleboden von Elektrolyseöfen

Also Published As

Publication number Publication date
DE1207362B (de) 1965-12-23
US3106448A (en) 1963-10-08
GB981243A (en) 1965-01-20
SE310658B (fr) 1969-05-12
ES276075A1 (es) 1962-07-16

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