Abstract
The effects of the electrical resistance and porosity of two types of coke used in ferrosilicon electric arc furnaces were investigated to determine the silicon recovery from quartz rock (\( {\text{SiO}}_{2} \)). To investigate the effect of the electrical resistance and porosity on the quartz recovery rate, semicoke and metallurgical coke were separately tested in ferrosilicon arc furnaces. The product was quantitatively and qualitatively studied. The results showed that the higher electrical resistance and porosity of semicoke, in comparison with metallurgical coke, increased the efficiency of silicon recovery and also reduced the electrical energy consumption. The furnace efficiency when using semicoke and metallurgical coke was 90.8% and 80.5%, respectively.
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The authors are grateful to Iran Ferroalloys Industries Co. and Mr. Ali Nasiri for his assistance.
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Hasannezhad, H., Meysami, A. Effects of Porosity and Electrical Resistance of Metallurgical Coke and Semicoke on Silicon Recovery in an Electric Arc Furnace. JOM 71, 336–341 (2019). https://doi.org/10.1007/s11837-018-3172-x
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DOI: https://doi.org/10.1007/s11837-018-3172-x