METHOD FOR EXTRACTING IRON FROM HIGH-IRON RED MUD AND DIRECTLY CEMENTING

摘要

A method for extracting iron from high-iron red mud and directly cementing, comprising the following steps: (1) preparing raw material high-iron red mud treated by a calcification-carbonization method; (2) mixing the raw material with a solid carbonaceous reducing agent and a slagging agent to form a mixture, and blowing the mixture to the vortex center of a vortex stirring high-temperature furnace for reduction; (3) separating the formed molten iron with molten slag into layers, and making the molten iron into wear-resistant cast iron; and (4) making the molten slag into cement clinker. According to the method, there is no need to sinter the raw material, and the added value of red mud utilization is increased.