Silicon recovery from silicon sawing waste by removal of SiC impurity via CaO-SiO2-Na2O slag absorption
文献类型：期刊论文
| 作者 | Wang, Dong2; Wang, Zhankui2; Wang, Zhi2; Qian, Guoyu2; Gong, Xuzhong2; Xin, Ling1 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2020-01-16 |
| 卷号 | 231页码:7 |
| ISSN号 | 1383-5866 |
| 关键词 | Silicon sawing waste Silicon SiC removal Slag absorption |
| DOI | 10.1016/j.seppur.2019.115902 |
| 英文摘要 | The removal of SiC restricts the recycling of silicon from wire sawing waste. Although the silicon in sawing waste can be easily enriched to around 90 wt%, it is difficult to further increase the purity. In this study, silicon ingot was successfully recovered from silicon sawing waste by using a CaO-SiO2-Na2O slag refining method. CaO-SiO2 slag was selected to absorb SiC particles from liquid silicon owing to its excellent wettability on SiC. Na2O was used to decrease the slag viscosity and improve the SiC transfer. SiC mass transfer coefficients in molten slag were calculated for different Na2O contents. The effects of operating variables on SiC removal and silicon yield were investigated, including the Na2O content, refining time, and slag/silicon ratio. The best result was a decrease of SiC content to less than 0.19 wt% from 9.07 wt% in the silicon ingot and a silicon yield of 76.5%. |
| WOS关键词 | KERF-LOSS SLURRY ; BORON REMOVAL ; GRADE SILICON ; CARBIDE ; WETTABILITY ; POWDER |
| 资助项目 | National Key R&D Program of China[2018YFC1901804] ; National Natural Science Foundation of China[U1702251] ; National Natural Science Foundation of China[51604255] ; National Natural Science Foundation of China[51604256] ; Fund of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization[CNMRCUKF1605] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000486133700029 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Fund of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30965]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Wang, Zhi |
| 作者单位 | 1.Henan Yicheng New Energy Co LTD, Kaifeng 475000, Peoples R China 2.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dong,Wang, Zhankui,Wang, Zhi,et al. Silicon recovery from silicon sawing waste by removal of SiC impurity via CaO-SiO2-Na2O slag absorption[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2020,231:7. |
| APA | Wang, Dong,Wang, Zhankui,Wang, Zhi,Qian, Guoyu,Gong, Xuzhong,&Xin, Ling.(2020).Silicon recovery from silicon sawing waste by removal of SiC impurity via CaO-SiO2-Na2O slag absorption.SEPARATION AND PURIFICATION TECHNOLOGY,231,7. |
| MLA | Wang, Dong,et al."Silicon recovery from silicon sawing waste by removal of SiC impurity via CaO-SiO2-Na2O slag absorption".SEPARATION AND PURIFICATION TECHNOLOGY 231(2020):7. |
入库方式： OAI收割
来源：过程工程研究所
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