PROCESS OF MAKING BINDERLESS BRIQUETS FROM STEELWORKS DUSTS

摘要

To produce smeltable briquets, steelworks dusts containing more than 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 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 aircooled to a temperature below 130.degree.C. The fines are recycled to the rotary kiln.