Discussion on mechanism of calcium and magnesium ions influence on collophane flotation

Metal cation ions generate easily some new products due to their activity. These ions affect the flotation by restraining or actuating certain mineral. In collophane flotation,a lot of calcium or magnesium ions can significantly affect the flotation. Flotation effect becomes poor. By the flotation experiments of calcium and magnesium ions added in,determination of contact Angle the adsorption quantity,and FTIR measurements,the results show that a certain concentration of calcium or magnesium ions can significantly reduce pure collophane mineral recovery. Why is it? Because in the alkaline pulp,Calcium or magnesium ions concentration is so high that generate hydrogen sol or precipitation. They adsorb on mineral surfaces. Effective oleic acid complex compound cut on mineral surface. Collector adsorption capacity decreased. Hydrophobic properties weakened. The collophane flotation effect became poor.