A method is proposed to determine free native silver and free silver sulphide in lead-zinc concentrate.

拟定了分离测定铅锌精矿中游离硫化银和游离自然银的方法。

youdao

Typically, a zinc concentrate contains about 55% of zinc with some copper, lead and iron.

一般而言，锌精矿含有大约55%锌和一些铜、铅和铁。

youdao

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.

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。

youdao

The lead-zinc concentrate processed in Trepca, in Serbia's tense province of Kosovo, comes in through Bar, along with an array of Serbia's other essential imports including iron ore and coal.

ECONOMIST: Montenegro