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研究了磨矿介质、浮选用水中的离子 (钙离子和硫代硫酸根离子 )和矿浆的氧化作用对硫化镍矿石可浮性的影响。用乙基黄药作为Enonkoski矿石小型浮选试验的捕收剂。试验结果表明 ,钢磨矿机铁颗粒的电池作用控制着镍黄铁矿与磁黄铁矿的分离选择性。钙离子和硫代硫酸根离子提高了钢磨矿机磨矿后黄药对硫化矿物的浮选活性。这些离子也改进了镍浮选分离的选择性。用瓷磨矿机磨矿后 ,这些离子抑制硫化矿物的浮选 ,但是 ,提高了有捕收剂存在时镍浮选的选择性。在用钢磨矿机和瓷磨矿机磨矿时 ,矿浆氧化作用改进了硫化矿物的可浮性和镍浮选的选择性
The effects of ions (calcium ions and thiosulfate ions) in flotation water and slurry oxidation on the floatability of nickel sulfide ores were investigated. Ethyl xanthate was used as a collector for the Enonkoski ore flotation test. The experimental results show that the battery role of the iron particles in the steel grinding machine controls the separation selectivity of the pentlandite and pyrrhotite. Calcium and thiosulfate ions increase the flotation activity of xanthate on sulfide minerals after grinding by steel mill. These ions also improve the selectivity of nickel flotation separation. After grinding with a porcelain grinder, these ions inhibit the flotation of sulphide minerals, however, increasing the selectivity for nickel flotation in the presence of collectors. In the case of grinding with steel mills and porcelain mills, the slurry oxidation improves the flotability of sulfide minerals and the selectivity of nickel flotation