某锡石多金属硫化矿锌高效回收工艺研究

某复杂锡石多金属矿为锡石硫化物-夕卡岩型,含锌、锡矿物分别以铁闪锌矿、锡石为主,主要有价元素含量Zn 6.04％、Sn1.05％,Fe、S含量分别为29.33％、19.08％,主要脉石成分SiO2含量16.63％.为设计合理、高效回收锌工艺流程,对锌回收流程进行了对比实验研究.研究结果表明,采用脱硫—锌硫混合浮选流程,经一段脱硫、二粗一扫三精,获得了锌精矿Zn品位47.06％、Zn回收率90.76％的良好指标,为同类矿石的开发利用提供可利用途径.

Study on efficient recovery process of zinc from cassiterite polymetallic sulfide ore

A complex cassiterite polymetallic ore is the type of cassiterite sulfide and skarn. The zinc and tin minerals are mainly iron sphalerite and cassiterite, with the main content of valuable elements Zn 6.04% and Sn1.05%, Fe and S 29.33% and 19.08%, respectively, and the main gangue component SiO2 16.63%. In order to design a reasonable and efficient zinc recovery process, a comparative experiment was conducted. The results showed that the mixed flotation process of desulphurization and zinc-sulfur was selected, and after desulphurization in one stage, second coarse selection, one sweep and three selections, the good indexes of zinc concentrate Zn grade 47.06% and Zn recovery 90.76% were obtained, which provided an available way for the development and utilization of similar ores.