技术上提出了原矿直接氰化浸出、原矿浮选—浮选精矿氰化浸出、原矿分步混合浮选和优先浮选四个方案，并比较了它们的特点。
In technology, four process schemes, such as crude ore cyanide leaching, flotation -cyanide leaching of flotation concentrate, fractional bulk flotation and selective flotation, were put forward.
某多金属铅锌矿含砷较高，采用常规铅、锌优先浮选方法，铅、锌精矿中砷含量超标。
Arsenic content in Pb concentrate and Zn concentrate is too high when PbZn ore being sorted by conventional flotation.
试验结果表明：采用铅优先浮选工艺和合理的药剂条件，可以有效地实现铅锌分离，获得铅精矿品位63。
Experimental results showed that applying selective flotation process and optimum reagent condition can efficiently separate the lead-zinc minerals and obtain lead concentrate of 63.
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