Continuous recycling of diamond wire sawing silicon powder - electron beam melting coupled with continuous feeding technology

doi:10.1016/j.cej.2024.149333

IOCAS-IR

	Continuous recycling of diamond wire sawing silicon powder - electron beam melting coupled with continuous feeding technology
	Hu, Zhiqiang 1,2; Cui, Yirong 1,2; Li, Jiayan 1,2; Tan, Yi 1,2; Liu, Yao 3; Jiang, Dachuan 1,2; Li, Pengting 1,2,4
	2024-03-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	484 页码:16
通讯作者	Li, Pengting([email protected])
摘要	Diamond Wire Sawing Silicon Powder (DWSSP), as the current major photovoltaic solid waste, how to achieve large-scale recycling has become the focus of the industry's attention. In this work, a novel approach characterized by enhanced purification, reduced energy consumption, and large-scale recycling capacities was proposed. Focusing on the secondary oxidation of powder, which is difficult to be solved by traditional methods, it was proposed to utilize the electron beam melting technology to achieve rapid melting by its higher energy density and vacuum degree, and reduced the oxygen impurity by 98.4 %. Then, through the prefabricated molten pool and continuous feeding technology, substantially increased the yield of high-purity silicon (91 %) and reduced the energy consumption per unit of production (19.01 kW/kg). Finally, for the purified silicon ingot, the content of major metal impurities was reduced to less than 5 ppmw, and the content of some volatile metal impurities was reduced to less than 1 ppmw. This research demonstrate the feasibility of electron beam melting coupled with continuous feeding technology in realizing low-energy, large-scale and high-purity recycling of DWSSP.
关键词	Photovoltaic waste Scale recycling Electron beam melting Reduced energy consumption
DOI	10.1016/j.cej.2024.149333
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51974057]; Science and Technology Innovation Fund of Dalian[2019RT13]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001185811000001
出版者	ELSEVIER SCIENCE SA
WOS关键词	WASTE ; IRON
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184969
专题	中国科学院海洋研究所
通讯作者	Li, Pengting
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China 2.Key Lab Energy Beam Met & Adv Mat Preparat Liaonin, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 4.Dalian Univ Technol, Sch Mat Sci & Engn, 2 Linggong Rd, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Hu, Zhiqiang,Cui, Yirong,Li, Jiayan,et al. Continuous recycling of diamond wire sawing silicon powder - electron beam melting coupled with continuous feeding technology[J]. CHEMICAL ENGINEERING JOURNAL,2024,484:16.
APA	Hu, Zhiqiang.,Cui, Yirong.,Li, Jiayan.,Tan, Yi.,Liu, Yao.,...&Li, Pengting.(2024).Continuous recycling of diamond wire sawing silicon powder - electron beam melting coupled with continuous feeding technology.CHEMICAL ENGINEERING JOURNAL,484,16.
MLA	Hu, Zhiqiang,et al."Continuous recycling of diamond wire sawing silicon powder - electron beam melting coupled with continuous feeding technology".CHEMICAL ENGINEERING JOURNAL 484(2024):16.