| Abstract Scope |
In order to realize the large-scale, resourcefulness, and harmless utilization of high-iron red mud, a pilot-scale experiment on vortex smelting reduction of high-iron red mud was conducted in this paper on the basis of laboratory research. The pilot study achieved good results. The iron recovery was 97.12%, and a pig iron product containing 93.27wt% iron was obtained, under the experimental conditions of the temperature of 1500 °C, a carbon ratio of 1.3, a holding time of 30 minutes, a stirring speed of 125rpm, an alkalinity of 1.0, and the amount of calcium fluoride was 10 % of the amount of calcium oxide. The content of P and S in the pig iron was low, which can meet the requirements of the national standard L03 for steelmaking. The main phases in the reduction slag were gehlenite, calcium titanate, and nepheline, which were effective components for cement clinker production. |