Effect of Lead and Zinc Impurities in Ironmaking and the Corresponding Removal Methods: A Review
Sayaf Mustafa,
Liqun Luo,
Bo-Tao Zheng,
Chen-Xi Wei,
Niyonzima Christophe
Affiliations
Sayaf Mustafa
Key Laboratory of Mineral Resources Processing and Environment of Hubei, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
Liqun Luo
Key Laboratory of Mineral Resources Processing and Environment of Hubei, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
Bo-Tao Zheng
Key Laboratory of Mineral Resources Processing and Environment of Hubei, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
Chen-Xi Wei
Key Laboratory of Mineral Resources Processing and Environment of Hubei, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
Niyonzima Christophe
Key Laboratory of Mineral Resources Processing and Environment of Hubei, School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
This paper reviews the effects of Pb and Zn impurities and their removal in the ironmaking process. The phase changes during ironmaking were investigated, along with the removal techniques of such impurities and their environmental impact. Results show that distribution of Pb–Zn–Fe in Fe ore is complicated, the particles are fine, and the removal of mineral phase at high temperature is difficult. Therefore, the production and occurrence of Pb and Zn impurities in the ironmaking process were analyzed; such impurities reduced the overall productivity of the process. In addition, the important treatments for the removal of these impurities were investigated. Most of these processes eliminated the Pb and Zn impurities from the dust or sludge, but the main impact of the reduced productivity of the ironmaking process in the furnaces was still observed.
