Yuan Zhangfu, Luo Min, Chou Yongquan, Wan Tianji. Separation of SiO2, and ZrO2 from Zircon by Carbon-Reduction[J]. Chinese Journal of Engineering, 1995, 17(4): 336-340. DOI: 10.13374/j.issn1001-053x.1995.04.006
Citation: Yuan Zhangfu, Luo Min, Chou Yongquan, Wan Tianji. Separation of SiO2, and ZrO2 from Zircon by Carbon-Reduction[J]. Chinese Journal of Engineering, 1995, 17(4): 336-340. DOI: 10.13374/j.issn1001-053x.1995.04.006
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Separation of SiO2, and ZrO2 from Zircon by Carbon-Reduction

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  • The influence of carbon content, temperature, time, particle size and from of samples on the reduction of SiO2 by carbon in zircon were studied. The effects of these factors on the ratio of desilica from zircon were obtained. The maximum value of this ratio could reach to 97.22% theoritically. The apparent activation energy for the reaction of zircon with carbon was 282.04 kJ/mol (1600~2000℃).Besides, the limiting step of reduction of SiO2 in zircon was the heat decomposition of zircon, not the reaction of SiO2 with carbon after decompostion of zircon.
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