1. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology), Ministry of Education, Maanshan, Anhui 243002, China; 2. Anhui Key Lab. Metall. Eng. Resources Recycling (Anhui University of Technology), Ma?anshan, Anhui 243002, China
Abstract:A new method for respective and high value-added utilization of the valuable components in BOF steel slag was proposed. Using the selective carbothermic method, the reduction behavior of the valuable elements Fe, P, Mn, Cr etc in BOF steel slag and the composition of the ferroalloy (target phase) precipitated from the slag effected by reduction temperature and time were investigated. Target phase and residues were obtained from the reduced slag by milling and magnetic separation. The metals-doped LiFePO4/C, a cathode material of lithium ion battery was synthesized by using the target phase recovered from the slag as main raw material. The results showed that exhibiting first discharge capacity of 159.58 mA?h/g at 0.1C and excellent rate performance. The residue was fine powders with mean size of about 2.5 ?m and uniform size distribution, and its main phases include Ca(OH)2, 2CaO?SiO2 and 3CaO?SiO2, showing significantly improved resource characteristics and utilization value.
何延波 吴照金 高志芳 岳海峰 刘伟明 王平. 钢渣有价组分的分部高附加值利用[J]. 过程工程学报, 2017, 17(5): 1028-1034.
Yanbo HE Zhaojin WU Zhifang GAO Haifeng YUE Weiming LIU Ping WANG. Respective and High Value-added Utilization of the Valuable Components in BOF Steel Slag. Chin. J. Process Eng., 2017, 17(5): 1028-1034.
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