Process of making binderless briquets from steelworks dusts

Details Process of making binderless briquets from steelworks dusts Process of making binderless briquets from steelworks dusts

1988-09-20

1989-12-26

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 25, 264125, C22B 116

Patent

active

048895555

ABSTRACT:
To produce smeltable briquets, steel-works dusts containing more that 15% metallic iron are heated in an indirectly heated rotary kiln to a briquetting temperature in excess of 500.degree. C. under an atmosphere which is inert to the metallic iron. The heated dusts are briquetted in the briquetting roll press under an inert atmosphere and under a roll pressure from 60 to 150 kN/cm roll width. The hot briquets are separated from the fines under an inert atmosphere and are air-cooled to a temperature below 130.degree. C. The fines are recycled to the rotary kiln.

REFERENCES:
patent: 4533384 (1985-08-01), Rellermeyer et al.

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