某含碳高硫铅锌矿综合回收工艺技术

Comprehensive recovery technology of a carbon-containing and high sulfur lead-zinc ore

新疆某铅锌矿矿石硫含量高,且含有一定量的含碳质物,属含碳高硫复杂难选铅锌矿石。矿石中方铅矿嵌布粒度不均匀,且与闪锌矿、黄铁矿共生关系复杂,严重影响选矿过程中铅锌分离及铅硫分离。根据原矿性质,采用"预先脱碳—铅锌硫依次优先浮选"工艺流程处理该矿石,实现了铅、锌矿物和黄铁矿的高效分离,所得铅精矿铅品位59.84%,铅回收率88.02%,含锌3.66%;锌精矿锌品位52.34%,锌回收率94.05%,含铅1.45%,硫精矿硫品位50.26%,硫回收率88.13%。

A lead-zinc ore in Xinjiang has a high sulfur content,also contains a certain amount of carbon,which is a complex and refractory lead-zinc ore with carbon-containing and high sulfur content.The galena grain size in ore is not uniform,and the symbiosis relationship between galena and pyrite is complex,which seriously affects the separation of lead and zinc,lead and sulfur.According to the raw ore character,"decarbonization in advance and lead,zinc,sulfur successively priority flotation"technological process is adopted to carry out test research,and the high-efficiency separation between lead,zinc ore and pyrite is achieved.The lead concentrate contains Pb 59.84%and Zn 3.66%,and lead recovery is 88.02%.The zinc concentrate contains Zn 52.34%and Pb 1.45%,and zinc recovery is 94.05%.The sulfur concentrate contains S 50.26%and sulfur recovery is 88.13%.