In the course of work new data on the mechanism of copper precipitation and leaching of iron triad elements were obtained. It is shown that in the conditions of leaching of high-copper matte for copper purification operation the cementation mechanism of copper precipitation is dominant.
On the basis of theoretical ideas about chemical interactions the indicators of quantitative distribution of metals and sulfur in the copper purification operation are calculated, which correspond well with the results of experiments.
Crystallization patterns of high-copper matte with copper to nickel ratio (0.7-2.3):1, cooled in a regime close to the industrial one, have been studied. It is established that high-copper matte (Cu:Ni>1.6:1) is characterized by a different order of crystallization of structural components than traditional copper-nickel matte with a predominant share of nickel. The necessity of choosing a different cooling mode for cuprous matte is shown.
