以电解锌产生的阳极泥为原料,用≤0．246mm褐煤粉作还原剂,过量50％,焙烧温度750℃,时间8h,此时90％以上的四价锰还原为二价锰．还原后的焙烧粉经2．04mol／L硫酸浸出,浸出液用硫化钠除重金属后用碳酸氢铵进行复分解反应,制得优质的工业碳酸锰．浸锰后的铅、银渣,配入硫化铅精矿后进行火法熔炼,制成粗铅（含银）． The anode slime produced by electrolytic zinc was used as raw material, with ≤0.246mm lignite powder as reducing agent, the excess amount was 50%, the calcination temperature was 750 ℃, the time was 8h, at which time more than 90% of the tetravalent manganese was reduced to divalent manganese. After the reduction of roasted powder by 2.04mol / L sulfuric acid leaching solution with sodium sulfide in addition to heavy metals with ammonium bicarbonate metathesis reaction, the system of high quality industrial carbonate. Leaching of manganese after the lead, silver slag, with lead sulfide concentrate after the fire melting method, made of crude lead (containing silver).