CH254797A - Verfahren zur Herstellung von Kryolith. - Google Patents

Verfahren zur Herstellung von Kryolith.

Info

Publication number: CH254797A
Authority: CH; Switzerland
Prior art keywords: cryolite; making; making cryolite
Prior art date: 1941-02-11

Application number

Other languages

English (en)

Inventor

Brodal Erling

Guldhav Henning

Original Assignee

Alcan Aluminium 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.)

1941-02-11

Filing date

1943-12-24

Publication date

1948-05-31

1943-12-24 Application filed by Alcan Aluminium Ltd filed Critical Alcan Aluminium Ltd

1948-05-31 Publication of CH254797A publication Critical patent/CH254797A/de

Classifications

- 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)
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Silicon Compounds (AREA)
Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Manufacture And Refinement Of Metals (AREA)

CH254797D 1941-02-11 1943-12-24 Verfahren zur Herstellung von Kryolith. CH254797A (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NO621569X		1941-02-11

Publications (1)

Publication Number	Publication Date
CH254797A true CH254797A (de)	1948-05-31

Family

ID=32232807

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH254797D CH254797A (de)	1941-02-11	1943-12-24	Verfahren zur Herstellung von Kryolith.

Country Status (6)

Country	Link
US (2)	US2592113A (de)
CH (1)	CH254797A (de)
DE (1)	DE825541C (de)
FR (2)	FR913189A (de)
GB (1)	GB621569A (de)
NL (1)	NL66897C (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH319303A (de) *	1952-11-26	1957-02-15	Vaw Ver Aluminium Werke Ag	Verfahren zur Rückgewinnung von Kryolith aus dem Kohleboden von Elektrolyseöfen
DE1036827B (de) *	1953-03-14	1958-08-21	Paul August Franz Baeumert	Verfahren zur Gewinnung von Fluorverbindungen aus fluorhaltigen Rohstoffen, insbesondere aus Fluormineralien
DE957027C (de) *	1953-11-17	1957-01-31	Vaw Ver Aluminium Werke Ag	Verfahren zur Herstellung von Kryolith
GB888844A (en) *	1957-08-28	1962-02-07	Paul August Franz Baumert	Process for obtaining fluorine compounds
DE1154078B (de) *	1960-03-03	1963-09-12	Sicedison Spa	Verfahren zur Herstellung von technisch reinem kuenstlichem Kryolith auf trockenem Wege
US3359066A (en) *	1961-07-27	1967-12-19	Eastman Kodak Co	Calcium fluoride optical elements and method for making same
US3206279A (en) *	1961-09-18	1965-09-14	Eastman Kodak Co	Lanthanum fluoride infrared transmitting optical elements

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US447063A (en) *		1891-02-24		Engelbert richters
US400766A (en) *		1889-04-02		Process of reducing aluminium by electrolysis
US1091795A (en) *	1913-06-06	1914-03-31	Moritz Eyssell	Process of purifying fluorspar.
US1634122A (en) *	1921-10-08	1927-06-28	Little Inc A	Method of producing sodium fluoride
US1871723A (en) *	1929-05-29	1932-08-16	Aluminum Co Of America	Process for the recovery of cryolite
US1891608A (en) *	1929-12-26	1932-12-20	Electric Smelting & Aluminum C	Process of producing alumina
US2182509A (en) *	1937-05-24	1939-12-05	Aluminum Co Of America	Production of double fluorides of alkali metals and aluminum
US2196077A (en) *	1937-06-25	1940-04-02	Aluminum Co Of America	Method of producing sodium aluminum fluoride
US2210594A (en) *	1938-01-06	1940-08-06	Aluminum Co Of America	Insecticide and method of producing same
US2328846A (en) *	1942-08-17	1943-09-07	Standard Oil Co	Catalytic conversion process
US2365702A (en) *	1944-03-06	1944-12-26	Tennessee Valley Authority	Extracting alumina

1943
- 1943-07-27 FR FR913189D patent/FR913189A/fr not_active Expired
- 1943-10-13 FR FR914132D patent/FR914132A/fr not_active Expired
- 1943-12-24 CH CH254797D patent/CH254797A/de unknown
1945
- 1945-11-15 US US628976A patent/US2592113A/en not_active Expired - Lifetime
- 1945-11-15 US US628977A patent/US2547901A/en not_active Expired - Lifetime
1946
- 1946-05-01 GB GB13185/46A patent/GB621569A/en not_active Expired
- 1946-05-03 NL NL125139A patent/NL66897C/xx active
1950
- 1950-05-27 DE DEA1734A patent/DE825541C/de not_active Expired

Also Published As

Publication number	Publication date
DE825541C (de)	1951-12-20
NL66897C (de)	1950-11-16
FR914132A (fr)	1946-09-30
FR913189A (fr)	1946-08-30
US2547901A (en)	1951-04-03
US2592113A (en)	1952-04-08
GB621569A (en)	1949-04-12

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