The Linch unit that is managed in four shifts , operates to produce Zinc sulfate solution
containing Zinc sulphide where the percentage of impurities is minimized .
Linch operations are carried out in three stages :
A) Dissolving or leaching
B) Hot Purification
C) Cold Purification
After cold & hot purification , the resulting solution of Zinc sulfate is free of impurities . It is called Makeup .It is then analysed and the quality control unit ensures the absence of interfering elements added to the electrolysis unit .