Ding Chunjiang, Chen Tiejun, Huang Xianbao, Ma Hao, Su Tao, Qu Wangang. Study of Fine-graded Specularite by Magnetic Roasting Process with Rotary Kiln[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 118-123. doi: 10.7513/j.issn.1004-7638.2014.06.023
Citation:
Ding Chunjiang, Chen Tiejun, Huang Xianbao, Ma Hao, Su Tao, Qu Wangang. Study of Fine-graded Specularite by Magnetic Roasting Process with Rotary Kiln[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 118-123. doi: 10.7513/j.issn.1004-7638.2014.06.023
Ding Chunjiang, Chen Tiejun, Huang Xianbao, Ma Hao, Su Tao, Qu Wangang. Study of Fine-graded Specularite by Magnetic Roasting Process with Rotary Kiln[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 118-123. doi: 10.7513/j.issn.1004-7638.2014.06.023
Citation:
Ding Chunjiang, Chen Tiejun, Huang Xianbao, Ma Hao, Su Tao, Qu Wangang. Study of Fine-graded Specularite by Magnetic Roasting Process with Rotary Kiln[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(6): 118-123. doi: 10.7513/j.issn.1004-7638.2014.06.023
Fine-graded specularite was used to carry out magnetic roasting experiment with a laboratory e-lectric rotary kiln in order to investigate effects of roasting temperature,roasting time,carbon content and size fraction,and charge ratio on roasting yield.The results showed that the process condition with roasting temperature of 830℃,roasting time of 60 min,carbon powder (0~1 mm) content of 2.0%,charge ratio of 15%,grinding fineness (-0.074 mm) about 85% and magnetic field intensity of 144 kA/m obtained ore concentrate with Fe grade of 55.22% and iron recovery of 87.16%.Microscope detection results indicated that most of the nonmagnetic iron ore was converted into magnetite,and some magnetite was dissociative and helpful for subsequent breaking,grinding and magnetic separation process.
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