Effect of reduced iron powder on reduction of copper

The reduced iron powder used to replace copper, usually with a particle size of 60~150 mesh, can ensure the content of iron, and can quickly replace the quality of copper. If the iron particles are too coarse, the copper particles will accumulate on the surface of the particles and affect the reaction speed. The best way to speed up the replacement reaction is to circulate the precipitant or stir the solution, so that the replacement precipitant can keep the fresh surface, which can effectively and quickly replace the copper.