【摘要】 采用酸性废水与矿浆调整剂组合活化被高碱抑制的黄铁矿，利用酸性废水调节矿浆碱度，同时以TY-308为矿浆调整剂降低酸性废水对浮选的负面影响。闭路试验结果表明，经过“一粗一精一扫”浮选，可获得硫品位48.73%、回收率97.93%的硫精矿；与浓硫酸为活化剂相比，硫回收率提高了1.34百分点；同时有望大幅降低酸性废水处理成本，且可避免浓硫酸使用过程中的安全隐患。更多还原

【Abstract】 Acid mine drainage(AMD) and a pulp regulator, TY-308, were used combinedly for activation in flotation of highly alkali-depressed pyrite, in which AMD was used to neutralize the pulp alkalinity, and TY-308 used to reduce the negative effect of AMD on flotation. A closed-circuit test on flotation with the process consisting of one-stage roughing, one-stage cleaning and one-stage scavenging yielded a pyrite concentrate grading 48.73% S at 97.93% recovery. Compared with the practice using sulfuric acid as the activator, the sulfur recovery can be increased by 1.34 percentage points. Furthermore, not only the cost for AMD treatment will be significantly reduced, but the safety risk associated with the use of concentrated sulfuric acid can be avoided.更多还原