PROCESS FOR MAKING A MELT OF STONE MATERIALS IN A CUPOLA-FURNACE

摘要

Method of producing a melt from rock materials in a cupola furnace which materials are charged as uniformly-shaped briquettes together with coke. In order to recue the content of CO in the exhaust and to increase the melting capacity of the furnace, the flow of combustion air related to the cross-section of the furnace is at least 60 Nm3/m2 minute, and the briquettes having such a shape that a porosity in the combustion zone is more than 0.45.