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Abstract

This article provides information on the formation of substances resulting from the roasting of sulfide-zinc concentrates, which negatively affects the course of subsequent stages. The resulting calcine was sent for reduction roasting in a weakly reducing inert gas atmosphere. Based on this, it can be assumed that the impact on the calcine of "weak" energetic inert gases the reduce minimises or formation of ferrites and zinc silicates. Since the principal primary using agent is gaseous H2, (hydrogen) in a mixture of gases with a weak reducing environment, all redox reactions occurring in total reduction were studied. The course of chemical reactions of hydrogen at high temperatures of oxides is considered. The normative thermodynamic values of reagents are determined accord particular to exceptional standards for certain thermodynamic analyses of substances with hydrogen. Research results show that zinc ferrites and silicates can be significantly reduced by reduction in an atmosphere of weak reducing gases. This, in turn, leads to a decrease in the formation of the numbert of cakes fonumberuring the hydrometallurgical leaching of the calcine, and an increase n the zinc concentration in the solution.

First Page

4

Last Page

10

DOI

https://doi.org/10.51346/tstu-01.22.2-77-0170

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