Process for the production of ferrochromium

Details Process for the production of ferrochromium Process for the production of ferrochromium

1984-12-20

1986-12-16

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

420 11, 420 34, C22C 3300

Patent

active

046295062

ABSTRACT:
A process for the production of ferrochromium from iron-containing chromium ores, in which the reduction of the ore, which is mixed with coal and slag-forming constituents, is conducted in a rotary kiln at 1480.degree. to 1580.degree. C. in the presence of a CO-containing atmosphere from 20 to 240 minutes, and in which melting follows in a melting furnace at 1600.degree. to 1700.degree. C. By this process, the greatest part of the gangue of the ore can be separated off before melting the reduced ore.

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patent: 2971834 (1961-02-01), Backstrom
patent: 2986459 (1961-05-01), Udy
patent: 3012875 (1961-12-01), Senior
patent: 3301669 (1967-01-01), Rathmann

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