Purification of Quartz Via Low-Temperature Microwave Chlorinated Calcination Combined with Acid Leaching and its Mechanism

doi:10.1007/s12633-022-01749-w

	Purification of Quartz Via Low-Temperature Microwave Chlorinated Calcination Combined with Acid Leaching and its Mechanism
	Song, Wangfeng 1,2; Jiang, Xuesong 1,2; Chen, Chen 1,2; Ban, Boyuan 2,3; Wan, Songming 4; Chen, Jian 2,3
刊名	SILICON
	2022-08-26
关键词	Quartz Shrinking core model Microwave treatment Chlorinated calcination Pressure acid leaching
ISSN号	1876-990X
DOI	10.1007/s12633-022-01749-w
通讯作者	Chen, Jian(jchen@ipp.ac.cn)
英文摘要	As an indispensable raw material for the semiconductor industry, high-purity quartz has great economic and strategic value. Since aluminum (Al) is a common impurity existing in quartz, removing Al from quartz is required for improving the quality of quartz. This article provides a quick and easy way to remove Al from the quartz. Utilizing the selective heating of microwave and the easy decomposition of NH4Cl during heating, the use of low-grade quartz sand and NH4Cl doping for microwave calcination combined with acid leaching reduced the Al content in a quartz sample from 738.8 ppm to 17.9 ppm, and the total impurity content was reduced from 1459 ppm to 85.4 ppm. According to the fitting results of the experimental data by the shrinking core model, it is determined that the leaching reaction is divided into two parts: external diffusion-controlled and product internal diffusion-controlled, thereby determining the existing state of Al in the quartz. The effects of the microwave treatment temperature, the doping reagent type and the amount on the Al removal rate were compared. Also, the differences between traditional calcination and microwave calcination were discussed.
资助项目	National Natural Science Foundation of China[51804294] ; National Natural Science Foundation of China[51874272] ; Anhui Provincial Natural Science Foundation[1808085ME121] ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Science[PECL2021QN003] ; Hefei Institutes of Physical Science, Chinese Academy of Sciences Director's Fund[YZJJZX202018]
WOS关键词	IRON REMOVAL
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000844921300001
资助机构	National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Science ; Hefei Institutes of Physical Science, Chinese Academy of Sciences Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131856]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Jian
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China 3.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Song, Wangfeng,Jiang, Xuesong,Chen, Chen,et al. Purification of Quartz Via Low-Temperature Microwave Chlorinated Calcination Combined with Acid Leaching and its Mechanism[J]. SILICON,2022.
APA	Song, Wangfeng,Jiang, Xuesong,Chen, Chen,Ban, Boyuan,Wan, Songming,&Chen, Jian.(2022).Purification of Quartz Via Low-Temperature Microwave Chlorinated Calcination Combined with Acid Leaching and its Mechanism.SILICON.
MLA	Song, Wangfeng,et al."Purification of Quartz Via Low-Temperature Microwave Chlorinated Calcination Combined with Acid Leaching and its Mechanism".SILICON (2022).