Mineralogical characterisation and separation studies on the recovery of Cr2O3 in the high carbon ferrochrome slag
Jing Chang 1,   Hongjing Li 2,   Kaidi Zheng 3,   Chunguang Liu 2,   Liming Wang 2,   Biao Li 4,   Xiangning Bu 3  
,   Huaizhi Shao 3, 5  
 
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1
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 1H9, Alberta, Canada
2
Baogang Mining Research Institute, Baotou, 014010, Inner Mongolia, China
3
Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
4
Mining and Minerals Engineering Department, Virginia Tech, Blacksburg, Virginia 24060 US
5
School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China
CORRESPONDING AUTHOR
Xiangning Bu   

Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
Huaizhi Shao   

Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
Publication date: 2020-03-15
 
Physicochem. Probl. Miner. Process. 2020;56(3):460–470
 
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ABSTRACT
In this study, the beneficiation performance of chrome from the high carbon ferrochrome slag (HCFS) was evaluated. The mineralogical characteristics of HCFS was investigated first, and then HCFS was treated by magnetic separation, gravity separation, magnetic-gravity combined separation, and gravity separation after grinding respectively, to recover the Cr2O3. Finally, the Fuerstenau upgrading curves were used to evaluate the separation performance of different separation processes. The results indicated that the gravity separation process with a proper grinding condition gave the optimum beneficiation performance. A concentrate product with 30.18% Cr2O3 grade and 22.52% recovery was obtained from the HCFS.
eISSN:2084-4735
ISSN:1643-1049