丁家山低品位铅锌矿浮选试验

Experiment on Flotation of Dingjiashan Low-grade Lead Zinc Ore

福建丁家山铅锌矿铅、锌品位分别为0.98%、3.96%,硫化铅和硫化锌分别占总金属量的95.92%、95.98%,主要载铅矿物方铅矿嵌布粒度较粗。为高效回收利用其中的有价金属铅、锌,进行浮选回收试验。结果表明,原矿磨矿至-0.074 mm占70%,以BK906为铅浮选捕收剂、硫酸锌+亚硫酸钠为锌组合抑制剂、MB为锌浮选捕收剂,经1粗2精1扫选铅—1粗2精2扫选锌闭路浮选,可获得铅精矿品位50.18%、回收率86.11%和锌精矿品位49.13%、回收率91.30%的良好指标,精矿铅、锌互含不明显,实现了该低品位铅锌矿的高效回收利用。

There is 0. 98% lead and 3. 96% zinc in a lead zinc ore from Dingjiashan Fujian province,lead sulfide and zinc sulfide account total metal for 95. 92% and 95. 98% respectively,galena is the main mineral containing lead which is roughly disseminated. In order to recover efficiently the lead and zinc metal in the ore,Flotation experiment was carried out. Results show that,at the grinding finess of70% passing 0. 074 mm,BK906 as lead flotation collector,zinc sulfate and sodium sulfite as the depressor of zinc mineral,MB as zinc flotation collector,lead concentrate with lead grade of 50. 18% and recovery of 86. 11%,zinc concentrate with concentrate with grade of 49. 13% and recovery of 91. 30% were obtained via one roughing-two cleaning-one scavenging lead flotation and one roughing-two cleaning-two scavenging zinc flotation. Lead and zinc mutually contained in the both of two concentrates were not obvious,which realized the recovery and utilization of the low grade lead-zinc ore.