高碳铬铁熔盐电解精炼制备低碳纯净铬铁

doi:10.12034/j.issn.1009-606X.217235

过程工程学报 ›› 2018, Vol. 18 ›› Issue (1): 177-181.DOI: 10.12034/j.issn.1009-606X.217235

高碳铬铁熔盐电解精炼制备低碳纯净铬铁

刘威^1,2，刘国龙^1,2，王美晨¹ ，肖赛君^1,2*

1. 安徽工业大学冶金工程学院，安徽马鞍山 243002；2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室，安徽马鞍山 243002

收稿日期:2017-05-09 修回日期:2017-05-26 出版日期:2018-02-22 发布日期:2018-01-29
通讯作者: 肖赛君 xiaosaijunzj@yahoo.com
基金资助:
国家自然科学基金青年项目

Preparation of Low Carbon Pure Ferrochromium from High Carbon Ferrochromium by Molten Salts Electrorefining

Wei LIU^1,2, Guolong LIU^1,2, Meichen WANG^1,2, Saijun XIAO^1,2^*

1. School of Metallurgy Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China; 2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Anhui University of Technology, Ma?anshan, Anhui 243002, China

Received:2017-05-09 Revised:2017-05-26 Online:2018-02-22 Published:2018-01-29
Contact: XIAO Sai-jun xiaosaijunzj@yahoo.com

摘要/Abstract

摘要： 以NaCl?KCl熔盐为电解质、高碳铬铁为工作电极、钨丝为对极、Ag/AgCl为参比电极，在阳极电极电势为0.3 V (vs. Ag/AgCl)的恒压条件下一步熔盐电解高碳铬铁制备低碳纯净铬铁；通过方波伏安法研究了阴极铬铁沉积机理，对阴极电解产物进行了微观分析和物相表征. 结果表明，阴极铬离子沉积是由扩散控速的一次性得失2个电子的可逆反应，且阳极中金属铬先于铁氧化进入熔盐；低碳铬铁合金为粒径0.5?2 ?m的球状颗粒，阴极产物低碳铬铁的碳含量仅为0.24wt%.

关键词: 纯净铁合金, 高碳铬铁, 熔盐电解精炼, 低碳纯净铬铁

Abstract: Low carbon ferrochromium was prepared from high carbon ferrochromium in NaCl?KCl molten salts by one-step potentiostatic electrolytic refining (0.3 V, vs. Ag/AgCl), with high carbon ferrochromium acted as working electrode, tungsten acted as counter electrode and Ag/AgCl as reference electrode. The mechanism of electrodeposition of dissolved Cr ions was investigated by square wave voltammetry. Microscopic and phase characterization of cathodic products were analyzed. The results showed that the reduction of chromium ions is a one-step reversible process with two electrons exchanged, which is controlled by diffusion mass transfer, and chromium was dissolved prior to iron in molten salts. The produced low carbon ferrochromium is mostly composed of spherical particles with the size ranging from 0.5 to 2 ?m. The carbon content of the cathode product was 0.24wt%.

Key words: pure ferroalloy, high carbon ferrochromium, molten salts electrorefining, low carbon pure ferrochromium

刘威刘国龙王美晨肖赛君. 高碳铬铁熔盐电解精炼制备低碳纯净铬铁[J]. 过程工程学报, 2018, 18(1): 177-181.

Wei LIU Guolong LIU Meichen WANG Saijun XIAO. Preparation of Low Carbon Pure Ferrochromium from High Carbon Ferrochromium by Molten Salts Electrorefining[J]. Chin. J. Process Eng., 2018, 18(1): 177-181.

参考文献

[1]Hansen M B, Johansen J D, Menne T.Chromium Allergy: Significance of both Cr (III) and Cr (VI)[J].Contact Dermatitis, 2003, 49(4):206-212
[2]Li Y, Pradhan N, Foley R, et al.Selective Determination of Airborne Hexavalent Chromium Using Inductively Coupled Plasma Mass Spectrometry[J].Talanta, 2002, 57(6):1143-1153
[3]Oleg S Y, Tatyana N B.Powdering Lower Chromium Carbide and Nitride Phases[J].Powder Metallurgy and Metal Ceramies, 2004, 43(3):201-204
[4]刘威，肖赛君，王振.熔盐体系中+在电极上的电化学行为[J].过程工程学报, 2017, 17(1):119-122
[5]Liu W, Xiao S J, Wang Z.Electrochemical Behavior of Cr (II) Ion in NaCl-KCl Melt at W Electrode[J].The Chinese Journal of Process Engineering, 2017, 17(1):119-122
[6]胡亮, 陈加希, 彭建蓉.铬资源与先进铬合金[M]. 北京：化学工业出版社, 2010.
[7]Hu L, Chen J X, Peng J R.Chromium Resource and Advanced Ferrochromium. [M].Beijing: Chemical Industry Press, 2010.
[8]阎江峰，陈加希，胡亮.铬冶金[M].北京：冶金工业出版社, 2007.
[9]Yan J F, Chen J X, Hu L.Chromium Metallurgy [M].Beijing: Metallurgical Industry Press, 2007.
[10]王维德.世界铬矿石和铬铁合金生产综述[J].矿业工程, 2003, l(6):10-13
[11]Wang W D.Summarized Introduction of Chromite Mining and Chromium-Iron Alloy Production[J].Mining Engineering, 2003, l(6):10-13
[12]蔡卫权，李会泉，张懿.微波技术在冶金中的应用[J].过程工程学报, 2005, 5(2):228-232
[13]Cai W Q，Li H Q，Zhang Y.Recent Development of Microwave Radiation Application in Metallurgical Processes[J].The Chinese Journal of Process Engineering, 2005, 5(2):228-232
[14]吴奎霖, 李磊, 朱红波, 等.含铬铁矿粉微波体还原的工艺探究[J].粉末冶金工业, 2015, 25(5):22-25
[15]Wu K L, Li L, Zhu H B, et al.The Technology Study of Voluminal Reduction on Chromite Ore Fines Containing Silicon Heated by Microwave[J].Powder metallurgy industry, 2015, 25(5):22-25
[16] Cattoir F R, Sullivan T A.Beneficiation of Ferrochromium by Molten Salt Electrolysis [J]. 1969.
[17]Hyslop D J S, Abdelkader A M, Cox A, et al.Utilization of Constant Current Chronopotentiometry to Synthesize a Co–Cr alloy[J].Journal of the Electrochemical Society, 2010, 157(7):E111-E115
[18] Weng W, Wang M, Gong X, et al.Direct Electro-Deposition of Metallic Chromium from K2CrO 4 in the Equimolar CaCl2-KCl Molten Salt and Its Reduction Mechanism [J]. Electrochimica Acta, 2016, 212: 162-170.[J].Electrochimica Acta, 2016, 212:162-170
[19]Chen G Z, Gordo E, Fray D J.Direct Electrolytic Preparation of Chromium Powder[J].Metallurgical and Materials Transactions B, 2004, 35(2):223-233
[20]Gordo E, Chen G Z, Fray D J.Toward Optimisation of Electrolytic Reduction of Solid Chromium Oxide to Chromium Powder in Molten Chloride Salts[J].Electrochimica Acta, 2004, 49(13):2195-2208
[21]Liu W, Liu G, Xiao S, et al.The Electrochemical Behavior of Cr (II) Ions in NaCl-KCl Melt[J].International Journal of Electrochemical Science, 2017, 12(2):1589-1599
[22]Ramaley L, Krause Jr M S.Theory of Square Wave Voltammetry[J].Analytical Chemistry, 1969, 41(11):1362-1365
[23]Pradhan D, Reddy R G.Electrochemical Production of Ti–Al alloys using TiCl 4–AlCl 3–1-butyl-3-methyl Imidazolium Chloride (BMImCl) Electrolytes[J].Electrochimica Acta, 2009, 54(6):1874-1880

高碳铬铁熔盐电解精炼制备低碳纯净铬铁

Preparation of Low Carbon Pure Ferrochromium from High Carbon Ferrochromium by Molten Salts Electrorefining

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