论文部分内容阅读
吴县铜矿处理铜、铅、锌、黄铁矿矿石、选矿工艺流程是:矿石磨细后,先进行铜铅混选,这时用石灰调浆,并添加硫酸锌、并硫酸钠和少量氰化物作为锌、硫的抑制剂、铜铅浮选的尾矿(即闪锌矿+黄铁矿)再用石灰调浆,加硫酸铜活化并用丁黄药捕收选锌,尾矿就是黄铁矿精矿。由于黄铁矿、磁黄铁矿量大,给锌硫分离带来困难,造成锌精矿含铁超标而降级。为强化锌硫分离,研究采用了提前充气搅拌、扩大锌硫可浮性差异的工艺,研究中发现,在药剂(pH、CuSO_4、丁黄药、松油)条件相同的情况下,不充气搅拌14分钟(选厂搅拌槽搅拌时间为14分钟),粗精矿中
Copper, lead, zinc and pyrite ores are processed in Wuxian copper mine. The ore beneficiation process is as follows: After the ore is finely ground, firstly copper and lead are mixed and mixed with lime, and then zinc sulphate is added, and sodium sulfate and a small amount of cyanide As a zinc, sulfur inhibitor, copper-lead flotation tailings (ie, sphalerite + pyrite) and then lime slurry, add copper sulfate activation and the use of Dingxuan catching zinc, the tailings is yellow iron Mine concentrate. Due to the large amount of pyrite and pyrrhotite, it brings difficulties to the separation of zinc and sulfur, resulting in the degradation of iron concentrate in zinc concentrate exceeding the standard. In order to strengthen the separation of zinc and sulfur, the technology of pre-aeration stirring and expanding the difference of floatation of zinc and sulfur was studied. It was found in the study that under the condition of the same agent (pH, CuSO_4, butyl xanthate, pine oil) 14 minutes (mill mixing tank stirring time of 14 minutes), crude concentrate