铵（胺）盐对孔雀石硫化浮选行为的影响

摘要

在容积为50 mL的RK／FGC－50挂槽式浮选机上进行了孔雀石硫化浮选试验，研究了不同铵（胺）盐活化剂对孔雀石硫化浮选行为的影响规律。结果表明：乙二胺磷酸盐、硫酸铵、碳酸氢铵、氯化铵、硝酸铵、氟化铵、碳酸铵均对孔雀石硫化浮选具有活化作用；用单一活化剂时效果最佳的是硫酸铵，用组合活化剂时乙二胺磷酸盐和碳酸氢铵组合效果最好，且组合活化剂活化效果优于单一活化剂。当pH＝10，乙二胺磷酸盐＋碳酸氢铵用量为（1．0×10－5＋1．0×10－4） mol／L，硫化钠用量为5×10－4 mol／L，异戊基黄药用量为1×10－3 mol／L时，孔雀石的回收率为67．67％，与直接硫化浮选法相比，回收率提高了25％。%Abtsract:Using several ammonium ( amine ) salt as activators, the sulfide flotation behaviors of malachite were studied in RK/FGC-50 groove type flotation machine.The results showed that eth-ylenediamine phosphate ammonium sulfate ,ammonium bicarbonate,ammonium chloride,ammonium nitrate,ammonium fluoride, ammonium carbonate had activation on sulfide flotation of malachite . When using single activator,the performance of ethylenediamine phosphates was the best,when u-sing a composite one, the performance of ethylenediamine phosphate and ammonium bicarbonate combination was the best.The activation effect of composite activator was better than that of single. When the pH=10,ethylenediamine phosphate and ammonium bicarbonate were combined with the molar mass ration of 1:10 and the dosage was 1.1 ×10-4 mol/L,The dosage of sodium sulphide was 5 ×10-4 mol/L and isoamyl xanthate dosage was 1 ×10-3 mol/L,the malachite were gained with the recovery of 67.67%.Compared to the direct sulfide flotation,the recovery was increased by 25%.