Direct electrolytic preparation of chromium metal in CaCl2-NaCl eutectic salt

doi:10.1016/S1003-6326(18)64671-0

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	Direct electrolytic preparation of chromium metal in CaCl2-NaCl eutectic salt
	Liu, Zheng-wei 1,2,3; Zhang, Hong-ling 1,2; Pei, Li-li 1,2; Shi, Yi-lang 4; Cai, Zai-hua 4; Xu, Hong-bin 1,2; Zhang, Yi 1,2
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	2018-02-01
卷号	28 期号:2 页码:376-384
关键词	Electrolysis Chromium Chromium Oxide Cacl2-nacl Molten Salt
ISSN号	1003-6326
DOI	10.1016/S1003-6326(18)64671-0
文献子类	Article
英文摘要	The electro-reduction of chromium oxide (Cr2O3) was investigated in an equimolar mixture of CaCl2-NaCl molten salt at 800 degrees C for developing a more efficient process for chromium preparation. Cyclic voltammetry and potentiostatic electrolysis were used to study the electro-reduction of the Cr2O3-loaded metallic cavity electrode. In addition, a number of parameters affecting the rate and extent of Cr2O3 electrolysis were considered to better understand the electrolysis process. The results demonstrate that CaCl2-NaCl molten salt is applicable for preparing Cr directly from Cr2O3 and the electrolysis parameters exert great influence on the cathode product. Under optimal experimental conditions, nodular Cr with an oxygen content of 0.5% (mass fraction) was obtained without any chromium carbides detected by XRD. Furthermore, the relatively high solubility of CaO and quite rapid crystal growth result in the formation of large platelet CaCr2O4, and the addition of NaCl to CaCl2 results in several variations on the electrolysis process and the product morphology from pure CaCl2 molten salt.
WOS关键词	MOLTEN CALCIUM-CHLORIDE ; DIRECT ELECTROCHEMICAL REDUCTION ; SOLID NB2O5 ; DEOXIDATION ; POWDER ; OXIDE ; TITANIUM ; NIOBIUM ; ALLOY ; TA2O5
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000425550900019
资助机构	National Basic Research Program of China(2013CB632600) ; National Natural Science Foundation of China(21376251 ; Fund of Hubei Zhenhua Chemical Co., Ltd., China ; 21406233)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24018]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Hubei Zhenhua Chem Co Ltd, Huangshi 435001, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zheng-wei,Zhang, Hong-ling,Pei, Li-li,et al. Direct electrolytic preparation of chromium metal in CaCl2-NaCl eutectic salt[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2018,28(2):376-384.
APA	Liu, Zheng-wei.,Zhang, Hong-ling.,Pei, Li-li.,Shi, Yi-lang.,Cai, Zai-hua.,...&Zhang, Yi.(2018).Direct electrolytic preparation of chromium metal in CaCl2-NaCl eutectic salt.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,28(2),376-384.
MLA	Liu, Zheng-wei,et al."Direct electrolytic preparation of chromium metal in CaCl2-NaCl eutectic salt".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 28.2(2018):376-384.