Preparation of Copper Sulfate
Usually, copper scrap is dissolved in dilute sulfuric acid with oxidant (such as 10% hydrogen peroxide solution) and then purified by recrystallization after removing impurities such as iron, a large amount of high purity copper sulfate can be obtained. The copper sulphate used in laboratory is usually purchased, and can be refined by dissolving waste copper compounds in sulphuric acid.
The waste electrolyte (containing Cu50-60g/L and H2SO4180-200g/L) of electrolyte recovery method reacts with the roasted copper mud to make fine copper powder. After the reaction liquid is separated and settled, the clear liquid is cooled, crystallized, separated and dried to produce the finished product of copper sulfate.