Since the tailings are very fine in size, it is more reasonable for the raw tailings to be pelletized followed by direct reduction roasting. In order to investigate the possibility of iron recovery by direct reduction roasting of carbon briquette from high iron tailings, the effects of different binders on the green briquette strength and high temperature strength of carbon briquette from high iron tailings were studied.

Briquette drying is a complex process, and the whole drying process includes gas, liquid, and solid multiphase flow, as well as complex heat and mass transfer process of drying medium inside and on the surface of briquettes. The internal structure of briquettes similar to porous media is complex and diverse.