FIELD: metallurgy.
SUBSTANCE: method involves melting of continuously supplied alumina in the melt of liquid electrocorundum at plasm-arc heating in a reactor under vacuum, deposition of primary aluminium and its refining follow. The alumina is loaded into the reactor by a dosing unit into the plasm arc zone and is molten under the temperature of 1300-1500°C with the vacuumising degree of 1.1-1.3·10-4 Pa. The electrocorundum melt is poured into the electric settling chamber through a separating partition membrane where aluminium being a liquid cathode is formed on the melt surface under the action of direct current of 150-200 A. After specified level of 10-15 cm is reached the metal is directed to the chamber for refining via an outlet hole in the vacuum furnace, and the required level of metal is constantly maintained in the chamber.
EFFECT: simplified aluminium production method and reduced material and power costs of the production along with high technical and economical indices of the process and its environment protection.
2 cl, 1 dwg, 1 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF PRODUCTION OF PRIMARY ALUMINUM AND DEVICE FOR REALIZATION OF THIS METHOD | 1999 |
|
RU2170278C2 |
METHOD OF PRODUCING ALUMINUM BY ELECTROLYSIS OF A SUSPENSION OF ALUMINA IN AN ALUMINUM MELT | 2020 |
|
RU2745830C1 |
DEVICE FOR REDUCTION OF METALS FROM MINERALS | 2019 |
|
RU2719211C1 |
METHOD FOR PRODUCING ALUMINIUM FROM ITS OXIDE | 2000 |
|
RU2163268C1 |
PROCEDURE FOR PRODUCTION OF CHEMICALLY ACTIVE METALS AND REDUCTION OF SLAG AND DEVICE FOR IMPLEMENTATION OF THIS METHOD | 2008 |
|
RU2401875C2 |
PROCEDURE FOR PRODUCTION OF ALUMINIUM BY ELECTROLYSIS OF MELT | 2008 |
|
RU2415973C2 |
METHOD FOR DETERMINATION OF ALUMINA CONTENT IN CRYOLITE-ALUMINA MELT AND ELECTROCHEMICAL DEVICE FOR ITS IMPLEMENTATION | 2020 |
|
RU2748146C1 |
PROCEDURE BY VOLKOV FOR PRODUCTION OF CHEMICALLY ACTIVE METALS AND DEVICE FOR IMPLEMENTATION OF THIS PROCEDURE | 2008 |
|
RU2401874C2 |
METHOD OF PRODUCTION OF METALS BY ELECTROLYSIS OF THE MOLTEN SALTS | 2004 |
|
RU2274680C2 |
Authors
Dates
2014-09-27—Published
2013-08-09—Filed