Conversion rate of copper sulfate replaced by iron powder

Copper can be concluded that each generated 64 g, need 56 gfe, therefore produce 1 ton of copper in theory, you need 56/64 tons, 0.875 tons of pure iron powder, namely the conversion rate of iron powder replacement copper are as follows: 0.875 in the actual production, in addition to the most effective elemental iron content in iron powder, also contain other impurities such as iron oxide, therefore, the higher the metal iron content of iron powder, the less the amount of the demand.