Beneficiation Study on an Oolitic Hematite

The oolitic hematite with a lower iron content and a higher phosphorus content will be a potential source of raw iron ore for the Chinese iron and steel industry. The magnetization reducing roasted and magnetic separation is a practical beneficiation process. The results show that the iron content in the concentrate can be increased to 57.63% from 45.95%, the iron recovery up to 73.12%, when the parameters are as follows, the roasting temperature is 900°C, the residence time 70 min, the ratio of reducing agent 5%, the grinding time 7 min, and the magnetic field strength 0.15T. The phosphorus content in the concentrate can be reduced to 0.23% from 0.39% by means of acid leaching.