CONTROL OF POLLUTION BY RECYCLING SOLID PARTICULATE STEEL MILL WASTES

摘要

Solid particulate steel mill wastes, such as blast furnace flue dust, basic oxygen furnace dust, mill scale, coke braise, fluxes and the like, which contain iron, iron oxides, carbon and other constituents, are briquetted with 2 to 15 percent (preferably 3 to 10 percent) hydrocarbonaceous binder of the total dry weight of the waste fines, and the raw briquettes are treated with an oxygen-containing gas at 350 DEG to 600 DEG F to selectively react with the hydrogen in the binder, to obtain strong briquettes which can be fed back into iron-or steelmaking process as a source of iron and/or carbon.