GB829602A - Improved method of producing alumina - Google Patents

Improved method of producing alumina

Info

Publication number
GB829602A
GB829602A GB29616/57A GB2961657A GB829602A GB 829602 A GB829602 A GB 829602A GB 29616/57 A GB29616/57 A GB 29616/57A GB 2961657 A GB2961657 A GB 2961657A GB 829602 A GB829602 A GB 829602A
Authority
GB
United Kingdom
Prior art keywords
preferred
aluminium hydroxide
aluminium
boric acid
improved method
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB29616/57A
Inventor
Robert Ross Barrington
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Motors Ltd
Original Assignee
General Motors 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 General Motors Ltd filed Critical General Motors Ltd
Priority to GB29616/57A priority Critical patent/GB829602A/en
Priority to FR1202072D priority patent/FR1202072A/en
Publication of GB829602A publication Critical patent/GB829602A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/002—Measuring fuel delivery of multi-cylinder injection pumps
    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C01F7/442—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination in presence of a calcination additive

Abstract

Aluminium hydroxide is calcined in the presence of a metallic halide and a boron compound to form an alumina which may be capable of being compacted to an increased degree before firing to form a refractory or a high temperature electrical insulator. The aluminium hydroxide may be produced by the Bayer process. The preferred halide is aluminium fluoride; chlorides, bromides and iodides may also be used, calcium and potassium halides being mentioned. The preferred boron compound is boric acid. When using aluminium fluoride and boric acid, preferred proportions are respectively up to 5% and 1-5% by weight of the aluminium hydroxide. Suitable calcining temperatures are 1400-1500 DEG C.
GB29616/57A 1957-09-20 1957-09-20 Improved method of producing alumina Expired GB829602A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB29616/57A GB829602A (en) 1957-09-20 1957-09-20 Improved method of producing alumina
FR1202072D FR1202072A (en) 1957-09-20 1958-09-09 Advanced process for the production of alumina

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29616/57A GB829602A (en) 1957-09-20 1957-09-20 Improved method of producing alumina

Publications (1)

Publication Number Publication Date
GB829602A true GB829602A (en) 1960-03-02

Family

ID=10294384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29616/57A Expired GB829602A (en) 1957-09-20 1957-09-20 Improved method of producing alumina

Country Status (2)

Country Link
FR (1) FR1202072A (en)
GB (1) GB829602A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1205957B (en) * 1964-02-13 1965-12-02 Vaw Ver Aluminium Werke Ag Process for the production of a low alkali alumina
DE1207360B (en) * 1961-06-05 1965-12-23 Aluminium Lab Ltd Process for the production of crystalline, NaO-poor alpha-aluminum oxide
US3384454A (en) * 1964-03-04 1968-05-21 Gen Motors Corp Method of calcining aluminum hydroxide by cross-flowing the heating gas
EP0048691A1 (en) * 1980-09-23 1982-03-31 Schepers, Bernhard, Dr. Process for producing coarse crystalline alpha-Al2O3
DE3212297A1 (en) * 1982-03-29 1983-09-29 Schweizerische Aluminium AG, 3965 Chippis METHOD FOR PRODUCING COARSE CRYSTAL ALUMINUM
US4487756A (en) * 1982-08-24 1984-12-11 Swiss Aluminium Ltd. Process for manufacturing crystalline alumina
WO2003055803A2 (en) * 2001-12-27 2003-07-10 Showa Denko K.K. Particulate alumina, method for producing particulate alumina and composition containing particulate alumina

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207360B (en) * 1961-06-05 1965-12-23 Aluminium Lab Ltd Process for the production of crystalline, NaO-poor alpha-aluminum oxide
DE1205957B (en) * 1964-02-13 1965-12-02 Vaw Ver Aluminium Werke Ag Process for the production of a low alkali alumina
US3384454A (en) * 1964-03-04 1968-05-21 Gen Motors Corp Method of calcining aluminum hydroxide by cross-flowing the heating gas
EP0048691A1 (en) * 1980-09-23 1982-03-31 Schepers, Bernhard, Dr. Process for producing coarse crystalline alpha-Al2O3
US4374119A (en) * 1980-09-23 1983-02-15 Swiss Aluminium Ltd. Process for the production of coarse crystalline alumina
DE3212297A1 (en) * 1982-03-29 1983-09-29 Schweizerische Aluminium AG, 3965 Chippis METHOD FOR PRODUCING COARSE CRYSTAL ALUMINUM
US4487756A (en) * 1982-08-24 1984-12-11 Swiss Aluminium Ltd. Process for manufacturing crystalline alumina
WO2003055803A2 (en) * 2001-12-27 2003-07-10 Showa Denko K.K. Particulate alumina, method for producing particulate alumina and composition containing particulate alumina
WO2003055803A3 (en) * 2001-12-27 2003-10-30 Showa Denko Kk Particulate alumina, method for producing particulate alumina and composition containing particulate alumina

Also Published As

Publication number Publication date
FR1202072A (en) 1960-01-07

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