GB902204A - Refractory lining for alumina reduction cell - Google Patents

Refractory lining for alumina reduction cell

Info

Publication number
GB902204A
GB902204A GB34342/60A GB3434260A GB902204A GB 902204 A GB902204 A GB 902204A GB 34342/60 A GB34342/60 A GB 34342/60A GB 3434260 A GB3434260 A GB 3434260A GB 902204 A GB902204 A GB 902204A
Authority
GB
United Kingdom
Prior art keywords
alumina
cryolite
mixture
refractory
cell
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
GB34342/60A
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.)
Reynolds Metals Co
Original Assignee
Reynolds Metals Co
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 Reynolds Metals Co filed Critical Reynolds Metals Co
Publication of GB902204A publication Critical patent/GB902204A/en
Expired legal-status Critical Current

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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/085—Cell construction, e.g. bottoms, walls, cathodes characterised by its non electrically conducting heat insulating parts
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics

Abstract

A refractory bottom lining for alumina reduction cells and aluminium melting furnaces comprises a high melting point mixture of a refractory oxide, e.g. alumina (Bayer process), magnesia, titania, zirconia, silica, beryllia, and a cryolite X3AIF6 where X is sodium, potassium, lithium, rubidium or caesium. Some excess of either XF or AIF3 being permissible. The refractory mixture may contain from 20 to 75%, preferably 40 to 75% alumina and may include a binder, e.g. calcium aluminate. In preparing the cell lining a molten solution of the alumina in the cryolite is prepared, e.g. at 1350 DEG C., and this may be cast, but is preferably cooled, granulated and pulverised, e.g. 70% to pan 60 mesh, and tamped into place in the cell; alternatively a loose powdered mixture of alumina and cryolite may be tamped directly into the cell and the latter placed in operation to sinter the mixture in place. Either the granula or loose powder may be moulded into a refractory body of the desired shape. Reduction cells incorporating alumina/cryolite linings are described and when aged these p linings may be crushed and re-used.
GB34342/60A 1959-10-20 1960-10-06 Refractory lining for alumina reduction cell Expired GB902204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US847594A US3093570A (en) 1959-10-20 1959-10-20 Refractory lining for alumina reduction cells

Publications (1)

Publication Number Publication Date
GB902204A true GB902204A (en) 1962-08-01

Family

ID=25301016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34342/60A Expired GB902204A (en) 1959-10-20 1960-10-06 Refractory lining for alumina reduction cell

Country Status (2)

Country Link
US (1) US3093570A (en)
GB (1) GB902204A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261699A (en) * 1966-07-19 Table ii
US3179526A (en) * 1962-03-05 1965-04-20 Harbison Walker Refractories Refractory bonding mortar
US3224887A (en) * 1962-03-27 1965-12-21 Int Nickel Co Slag composition for fluid mold casting
US3287247A (en) * 1962-07-24 1966-11-22 Reynolds Metals Co Electrolytic cell for the production of aluminum
US3321392A (en) * 1962-09-07 1967-05-23 Reynolds Metals Co Alumina reduction cell and method for making refractory lining therefor
US3372105A (en) * 1962-10-22 1968-03-05 Arthur F. Johnson Aluminum reduction cell and insulation material therefor
US3267183A (en) * 1963-04-08 1966-08-16 Kaiser Aluminium Chem Corp Method of lining an aluminum electrolytic cell
US3392092A (en) * 1963-08-30 1968-07-09 Isaac M. Diller Activation of cryolite-alumina compositions
GB1046583A (en) * 1964-03-04 1966-10-26 Gen Motors Ltd Furnaces for the heat treatment of particulate material
US3457158A (en) * 1964-10-02 1969-07-22 Reynolds Metals Co Cell lining system
US3804393A (en) * 1971-08-09 1974-04-16 Pennsylvania Engineering Corp Steel conversion apparatus
US4175022A (en) * 1977-04-25 1979-11-20 Union Carbide Corporation Electrolytic cell bottom barrier formed from expanded graphite
US4224128A (en) * 1979-08-17 1980-09-23 Ppg Industries, Inc. Cathode assembly for electrolytic aluminum reduction cell
ZA824256B (en) * 1981-06-25 1983-05-25 Alcan Int Ltd Electrolytic reduction cells
EP0095854B1 (en) * 1982-05-28 1987-08-19 Alcan International Limited Improvements in electrolytic reduction cells for aluminium production
US4999097A (en) * 1987-01-06 1991-03-12 Massachusetts Institute Of Technology Apparatus and method for the electrolytic production of metals
WO1989002490A1 (en) * 1987-09-16 1989-03-23 Eltech Systems Corporation Composite cell bottom for aluminum electrowinning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526875A (en) * 1944-01-21 1950-10-24 Elektrokemisk As Method of collecting gases in aluminum furnaces
DE1000156B (en) * 1954-11-05 1957-01-03 Vaw Ver Aluminium Werke Ag Cell for the production of high-purity aluminum
US2915442A (en) * 1955-11-28 1959-12-01 Kaiser Aluminium Chem Corp Production of aluminum

Also Published As

Publication number Publication date
US3093570A (en) 1963-06-11

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