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Modern Mining ›› 2020, Vol. 36 ›› Issue (08): 123-.

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Research on the Conditions of Magnetization Roasting for the Comprehensive #br# Utilization of Lead,Zinc and Iron in Blast Furnace Dust

Ge Xinfeng 1,2 He Xiaohua 1,2 Ding Houquan 1,2 Sun Bingquan 1,2 Chen Zhou 1,2 Luo Hongzhen 1,2   

  1. 1.Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.；2.National Engineering Research Center of
    Huawei High Efficiency Cyclic Utilization of Metal Mineral Resources Co.,Ltd.
  • Online:2020-08-25 Published:2021-09-19

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Abstract: In order to determine the conditions of magnetization roasting for recovery of lead,zinc and iron from Xingang blast furnace dust,the magnetization roasting temperature,time,quantity of anthracite and the materials thickness were tested and the test parameters determined by the conditions were further combined and optimized.The results show that the recoveries of lead and zinc were over 86% and 93% respectively,the iron grade of magnetite concentrate was over 63%,the total content of lead and zinc were less than 0.4% and the recovery rate of iron was over 81% when the roasting temperature was 1 120 ℃ and the time was 3.5 h,the amount of anthracite was 25%,the thickness of material layer was 35 mm,which met the requirements of the China national 863 project.

Key words: Blast furnace dust,Magnetizing roast,Volatilization of lead and zinc,Iron concentrate