ELECTRIC ARC FURNACE SLAG FOAMING

摘要

A method of producing a foamy slag in which the projected flame produced by burning fuel, for instance methane, within an oxidant is directed onto the slag so that the flame impinges on the slag, thereby to heat the foamy slag. Carbon containing particles are entrained in the flame so that the particles are heated by the flame and are projected into the slag to form and maintain a foamy slag. The carbon containing particles can be formed of coal that contains volatiles and the carbon containing particles are resident within the flame for a sufficient length of time for the volatiles to substantially burn-off and to contribute to the heating of the particles without appreciable oxidation of carbon contained within the coal.