Direct reduction and extraction of iron from nickel smelting slag coupling of preparation of cementing materials using gangue composition

Abstract

Aiming at the properties of Fe and SiO2 in nickel slag, the process of preparing DRI by direct reduction nickel slag from coal base was proposed, and the component of gangue is used as raw material to prepare C2S(belite) and C3S(alite), which is a comprehensive utilization of nickel slag. The reduction reaction of iron coupling of the reaction of cementitious materials was realized through thermodynamic calculation and experiment. The reduction roasting products of nickel slag with iron, C3S and C2S as the main phase were obtained by reasonable batching and temperature control technology of reduction roasting reaction.

Keywords

• direct reduction iron
• extraction
• nickel slag
• calcium silicate
• x-ray analysis