Experimental Process and Kinetics Research of Silicon Extraction from the Residue after Titanium Extraction by Alkali Leaching AITranslate
Abstract AITranslate
A large amount of silicon exists in the residue after titanium extraction from titanium-rich residue by ammonium bisulfate roasting.The effects of various parameters in the experimental process of extracting silicon from the residue after caustic alkali leaching are systematically studied.The results show that SiO2 extraction rate can reach 78.4%under the experimental conditions of reaction temperature of 220℃,mass ratio of caustic alkali to residue of 3.5∶1,liquid-solid ratio of 5.5∶1,reaction time of 50 min and stirring speed of 400 r/min.The alkali leaching kinetic analysis results show that the reaction process is controlled by internal diffusion.The apparent activation energy of the reaction is 24.047 kJ/mol,and the kinetics equation can be expressed as 1+2(1-x)-3(1-x)^2/3=2.415 exp[-24 047/(RT)]·t.
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DOI：
Chinese Library Classification Number:TF09[冶金工程—冶金物理化学]
Citation Information:
A large amount of silicon exists in the residue after titanium extraction from titanium-rich residue by ammonium bisulfate roasting.The effects of various parameters in the experimental process of extracting silicon from the residue after caustic alkali leaching are systematically studied.The results show that SiO2 extraction rate can reach 78.4%under the experimental conditions of reaction temperature of 220℃,mass ratio of caustic alkali to residue of 3.5∶1,liquid-solid ratio of 5.5∶1,reaction time of 50 min and stirring speed of 400 r/min.The alkali leaching kinetic analysis results show that the reaction process is controlled by internal diffusion.The apparent activation energy of the reaction is 24.047 kJ/mol,and the kinetics equation can be expressed as 1+2(1-x)-3(1-x)^2/3=2.415 exp[-24 047/(RT)]·t.
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| GB/T 7714-2015 | [1] XU Li-shuang, SUI Li-li, GE Xin, et al. Experimental Process and Kinetics Research of Silicon Extraction from the Residue after Titanium Extraction by Alkali Leaching[J]. Rare Metals and Cemented Carbides, 2019(4): 20-23. |
| MLA | [1] XU Li-shuang, et al., "Experimental Process and Kinetics Research of Silicon Extraction from the Residue after Titanium Extraction by Alkali Leaching." Rare Metals and Cemented Carbides, no. 4, 2019, pp. 20-23. |
| APA | [1] XU Li-shuang, SUI Li-li, GE Xin, ZHAI Yu-chun, & SHAO Shuang. (2019). Experimental Process and Kinetics Research of Silicon Extraction from the Residue after Titanium Extraction by Alkali Leaching. Rare Metals and Cemented Carbides(4), 20-23. |
| IEEE | [1] XU Li-shuang, SUI Li-li, GE Xin, ZHAI Yu-chun, and SHAO Shuang, "Experimental Process and Kinetics Research of Silicon Extraction from the Residue after Titanium Extraction by Alkali Leaching," Rare Metals and Cemented Carbides, no. 4, pp. 20-23, 2019. keywords: {titanium-rich residue;caustic alkali leaching;silicon extraction;kinetics;internal diffusion;process condition} |