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

C - Chemistry, Metallurgy

22

B

53/3

C22B 1/248 (2006.01) C22B 1/24 (2006.01) C22B 7/02 (2006.01)

Patent

CA 1299372

ABSTRACT OF THE DISCLOSURE: To produce smeltable briquets, steel- works dusts containing more than 15% metallic iron are heated in an indirectly heated rotary kiln to a briquet- ting temperature in excess of 500°C under an atmosphere which is inert to the metallic iron. The heated dusts are briquetted in the briquetting roll pressure 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°C. The fines are recycled to the rotary kiln.

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