影响电锌含铅偏高的因素分析

Analysis of Factors on Higher Content of Lead in Electrolytic Zinc

电锌中含铅主要由化学沉积和机械夹杂两种原因引起 ,而电解液中悬浮的 Pb SO4,Pb CO3和 Pb O粒子是引起机械夹杂的主要原因。往电解液中加入 Sr CO3并保持一定时间可沉淀出大部分铅 ,获得铅浓度较低的电解液 ,此电解液送电解可生产出 1号电锌。

Chemical electrodeposition and mechanical impurities can cause higher content of lead in electrolytic zinc,and suspending PbSO 4,PbCO 3 and PbO particles in electrolyte can cause mechanical impruities.Most lead in electrolyte can be precipitated by adding SrCO 3 into electrolyte and keeping for some time,and then qualified electrolyte with lower content of lead can be gotten.1 # electrolytic zinc can be produced with the qualified electrolyte.