Title

Phase Transformation Behavior of Lead and Zinc in the High-Lead Slag Reduction Process

Document Type

Article

Publication Date

5-2-2021

Department

Department of Materials Science and Engineering

Abstract

The phase transformation behavior of lead and zinc in the high-lead slag reduction process was reported in this article. First, the occurrence state of lead and zinc in the slag and the phase transformation behavior of lead and zinc during reduction were investigated. Following, the thermodynamic modeling calculation for the reduction process was constructed and discussed. The results indicated that the zinc in the high-lead slag mainly existed in the form of zinc ferrite and silicate while the lead mainly existed in a silicate form. The XRD patterns of the reduced slag at different coal ratios demonstrated that the lead existing in the high-lead slag in a silicate form could be reduced into the metal phase while the zinc existing in the high-lead slag in the form of zinc ferrite (ZnFe O ) could be converted into zinc silicate (Zn SiO ), as the coal ratio increased. The thermodynamic modeling calculation results showed an agreement with the experiment analysis.

Publication Title

Russian Journal of Non-Ferrous Metals

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