某复杂铅锌铁矿选矿试验研究

河北某复杂低品位铅锌铁矿石，含铅锌铁品位分别为0．51％、2．92％和11．88％，通过浮选法回收铅锌＋磁选回收铁的联合工艺流程，获得了理想的选矿工艺指标。采用捕收性和选择性好的乙硫氮作为铅捕收剂，实现了铅与锌的优先浮选分离，获得了含铅品位49．37％，回收率71．81％的铅精矿；采用丁基黄药作为锌捕收剂，获得了含锌品位56．21％，回收率79．19％的锌精矿；采用湿式弱磁选，获得了含铁66．78％，回收率60．21％的铁精矿。

Experimental Research on Mineral Processing of Some Complex Lead - zinc-- iron Ore

A low--grade complex lead--zinc--iron ore from Hebei contains lead grade of 0.51 ~, zinc grade of 2.92%, and iron grade of grade 11.88%. The ideal dressing index is achieved by adopting the process of lead --zinc -- recycling iron concentration by low intensity magnetic separation. The selective flotation sep- aration of lead and zinc is realized by using ethyl thio carbamate with fine selectivity and collecting capacity as lead collector, Butyl xanthate as zinc collector and by wet low intensity magnetic separation, a lead con- centrate recovery 21% can with a lead grade and recovery of 43.97% and 71.81%, a zinc concentrate with a zinc grade and of 56.21% and 79.19%, an iron concentrate with an iron grade and recovery of 66.78% and 60. be obtained respectively,