孔雀石分段硫化的浮选行为及机理研究

为进一步提高孔雀石的硫化浮选效果，通过单矿物浮选试验，系统研究了孔雀石分段硫化的浮选行为，采用X射线光电子能谱（XPS）分析了孔雀石分段硫化浮选的作用机理。浮选试验结果表明:孔雀石自然可浮性中等，碳酸铵对孔雀石硫化浮选有较好的活化效果；孔雀石分段硫化浮选的最佳段数为三段，三段硫化浮选相较于一段、二段硫化浮选，其回收率分别提高了14.68个百分点、5.44个百分点，四段硫化浮选较三段硫化浮选效果变差，回收率下降了1.62个百分点。XPS分析结果显示:在总药剂量不变的情况下，三段硫化浮选泡沫产品矿矿物表面一价铜的多硫化物含量最高，硫化膜稳定性提高，改善了矿物表面的硫化效果，促进了捕收剂的吸附，提高了孔雀石硫化浮选总回收率。 

Staged Sulfuartion-flotation of Malachite and Its Mechanism

In order to further improve the sulfuration-flotation effect of malachite, the effect of staged sulfuration-flotation behavior of malachite was systematically studied through single mineral flotation tests, X-ray photoelectron spectroscopy (XPS) was used to analyze the mechanism of malachite staged sulfuration-flotation. The flotation results show that malachite had medium natural floatability and ammonium carbonate had better activation on malachite staged sulfuration-flotation; When the number of malachite segmented sulfuration-flotation stages is three, compared with the first, second and fourth stages, the sulfuration-flotation recovery rate of malachite increased by 14.68% and 5.44%, respectively. The effect of the four-stage sulfuration-flotation is poorer than that of three-stage sulfuration-flotation, and the recovery rate decreased by 1.62%. Therefore, achieving the effective flotation performancethe by the three-stage sulfuration-flotation; According to the results of X-ray photoelectron spectroscopy, under the condition of the same total dosage, the content of monovalent copper on the surface of the foam products of three-staged sulfuration-flotation is further increased, increasing the stability of sulfide films, improving sulfuration-flotation performance, enhancing adsorption of collectors, and increasing total flotation recovery.