Chlorination Behaviors of Zinc Phases by Calcium Chloride in High Temperature Oxidizing-chloridizing Roasting

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概要

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• The high temperature oxidizing-chloridizing roasting is one of useful methods to separate nonferrous metals from pyrite cinder and metallurgy slag. However, as one kind of main nonferrous metals in pyrite cinder and metallurgy slag, the occurrence of zinc is complicated and its chlorination behavior is not demonstrated. In the present study, chlorination behaviors of ZnO, ZnS and ZnFe2O4 at the temperature range of 1025–1175°C in air by simulating the chloridizing roasting process of pyrite cinder and metallurgy slag have been investigated. It is shown that ZnS and ZnO is much easier to remove, ZnFe2O4 is refractory to remove because of the presence of gangues. If enough chloride additives were added, the differences of Zn removal rate among ZnS, ZnO and ZnFe2O4 would disappear. In addition, the presence of Al2O3, SiO2, CaO and MgO decreases the Zn removal rate from ZnFe2O4, and the presence of Al2O3 and MgO decreases the Zn removal rate from ZnO while the presence of SiO2 and CaO improves the Zn removal rate from ZnO. Fe3O4 influences the Zn removal rate from ZnO and ZnFe2O4 positively.

• The Iron and Steel Institute of Japanの論文
• 2011-11-15

著者

• Chen Dong

  Department Of Ferrous Metallurgy School Of Minerals Processing And Bioengineering Central South University

• Pan Jian

  Department Of Ferrous Metallurgy School Of Minerals Processing And Bioengineering Central South University

• Zhu Deqing

  Department Of Ferrous Metallurgy School Of Minerals Processing And Bioengineering Central South University

• ZHENG Guolin

  Department of Ferrous Metallurgy, School of Minerals Processing and Bioengineering, Central South University

• PAN Jian

  Department of Electronic Engineering, Tsinghua University

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