China Nonferrous Metallurgy

The factors that influence zinc ingot quality include chemical composition and physical appearance. To tackle the low quality of zinc ingots produced from a zinc refinery, analysis has been made on the influence factors and control measures of chemical compositions such as Cd, Cu, Pb and Fe, from the perspective of zinc electrolysis principle and the various electrolysis procedures, and measures has been taken to control the physical appearance quality of zinc ingots in every detail of zinc ingot casting operation. As a result, the yield of 0^# zinc reaches 100%, the scrap percentage is lowered to less than 1% and the highest quality of zinc ingots reaches 99.997% or more, whereby good economic benefits are achieved.