Effect of Ca2+ , Mg2+, SO42-on phosphate ore flotation in mineral processing wastewater

摘要

After the phosphate ore dressing wastewateris recycled for many times, the dissolved inorganic mineral ions and reagents will influence the flotation indexes when they reach to a certain concentration.This paper aims to study the effect of Ca2+ , Mg2+ , SO2-4 on the reverse flotation of phosphate ore.The single factor experiment results show that the concentrate P2O5 grade and the recovery decrease with the increase of Ca2+ , Mg2+ , SO42-concentration in the ore pulp.Ca2+ was found to have a certain influence on the concentrate grade.The orthogonal experiment results show that SO2-4-has the largest effect on the flotation index, followed bv Mg2+ and Ca2+.