Silicon separation and purification process from hypereutectic aluminum-silicon for organosilicon use

被引：0
|
作者：
He, Yunfei [1 ,2 ,3 ]
Yang, Xi [2 ,3 ]
Duan, Lianfei [4 ]
Li, Shaoyuan [2 ]
Chen, Zhengjie [2 ]
Ma, Wenhui [1 ,2 ]
Lv, Guoqiang [2 ]
Xing, Aimin [1 ,5 ]
机构：
[1] Yunnan Prov Energy Investment Grp Co Ltd, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[3] Yunnan Prov Energy Res Inst Co Ltd, Kunming 650000, Yunnan, Peoples R China
[4] Kunming Univ, Key Lab Yunnan Prov Higher Educ Inst Organ Optoel, Kunming 650214, Yunnan, Peoples R China
[5] Yunnan Energy Investment Chem Co Ltd, Kunming 650093, Yunnan, Peoples R China
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2021年 / 121卷
基金：
中国国家自然科学基金;
关键词：
Separation process; High separation efficiency; Hypereutectic aluminum-silicon melt; Alternating electromagnetic field; Directional solidification; AL-SI ALLOY; METALLURGICAL-GRADE SILICON; MULTICRYSTALLINE SILICON; MAGNETIC-FIELD; METAL IMPURITIES; EFFICIENT METHOD; BORON REMOVAL; SOLIDIFICATION; MELT; MICROSTRUCTURE;
D O I：
10.1016/j.mssp.2020.105333
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Industrial silicon is always used for the manufacture of organosilicon. This study evaluated the segregation properties of hypereutectic aluminum-silicon melts and revealed the silicon separation process from hypereu-tectic aluminum-silicon melts dealt with alternating electromagnetic directional solidification (AEM-DS). During the electromagnetic refining, the electromagnetic force can not penetrate Al-Si melts deeply and melts flow was generated by the outer thin surface, when the frequencies are 3, 30 and 50 kHz, the corresponding skin depths are 5.930, 1.876 and 1.027 mm, which show sharp attenuations. Moreover, the numerical simulation was used to simulate the electromagnetic field distribution. The experimental phenomenon can accord well with the simulation and calculation results. Moreover, this study reveal the middle process of hypereutectic Al-Si melt dealt with AEM-DS. The better separation effect will be helpful to eliminate Si, Al and acid waste in the following acid leaching.
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页数：11
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