Application of Small Molecular Inhibitors in Reconcentration of Iron Ore Tailings
Application of small molecular inhibitor in reconcentration of iron ore tailing by direct flotation are discussed. From the results, it can be seen that organic inhibitors are more effective than inorganic inhibitors. When sodium hexametaphosphate and sodium silicate are used as inhibitor, iron grade in concentrates is no more than 30%. However, when organic inhibitors are used as used, iron grade in concentrate are more than 30%. And 2,4-dibydroxy-benzoic acid is the most effective inhibitor to depress quartz. When it is used, iron grade in concentrate is more than 35%. Measurement results of infrared spectrum show that hydrogen bonding adsorption occur between inhibitor and quartz surface.
Hongxi Zhu and Linjiang Wang
W. G. Liu et al., "Application of Small Molecular Inhibitors in Reconcentration of Iron Ore Tailings", Advanced Materials Research, Vol. 402, pp. 552-555, 2012