以MgF2-CaF2为熔盐电解质,利用固体透氧膜(SOM)法直接电解还原Ta2O5和丁TiO2制备了金属钽和钛,分析了制样压力和电解温度对阴极产物形貌的影响以及电流的变化规律.结果表明:SOM法直接制备金属钽和钛的电解速度快,电流密度高,合理的制样压力为250～332 MPa,电解电压为3.2～3.8 V,电解温度在1 373～1 432 K之间.该方法较FFC有诸多优点,用于对我国各类稀有难熔金属矿资源进行开发利用,具有好的发展前景.
参考文献
| [1] | Gupta C K;Jena P K.[J].Journal Less-Common Met Trans Am Soc Metals,1965(08):90-98. |
| [2] | 杨遇春.钛--跨入新千年的金属巨人[J].中国工程科学,2002(03):21-31. |
| [3] | Boyer R;welsch G;Callings E W.Materials Properties Handbook:Titanium Alloys[M].Materials Park,OH:ASM Internationals,1994:125-163. |
| [4] | 何季麟.世界钽粉生产工艺的发展[J].中国工程科学,2001(12):85-89. |
| [5] | 莫畏;邓国珠;罗方承.钛冶金[M].北京:冶金工业出版社,1998:8-41. |
| [6] | Il Park;Toru H. Okabe;Oh Yeon Lee;Chuel Ro Lee;Yoshio Waseda .Semi-continuous production of tantalum powder by electronically mediated reaction (EMR)[J].Materials transactions,2002(8):2080-2086. |
| [7] | He J L;Zhang Z G;Xu Z T .Hydrometallurgical Extraction of Ta & Nb in China[J].Rare Metal Materials and Engineering,1998,27(01):9. |
| [8] | Nersisyan H H;Lee J H;Won C W .The Role of the Reaction Medium in the Propagating High Temperature Synthesis of Nanosized Tantalum Powder[J].Combustion and Flame,2003,135:539-545. |
| [9] | Chung-Seok SEO;Sang Mun JEONG;Sung-Bin PARK;Jin-Young JUNG;Seong-Won PARK .Preparation of Tantalum Powder from Ta_2O_5 by an Electrochemical Reduction in an LiCI-Li_2O Molten Salt System[J].Journal of Chemical Engineering of Japan,2006(1):77-82. |
| [10] | Schwandt C;Fray D J .Determination of the kinetic pathway in the eleetrochemieal reduction of titanium dioxide in molten calcium chloride[J].Electrochimica Acta,2005,51:66-76. |
| [11] | Gruber H;Krautz E .Magnetoresistanee and conductivity in the binary system titanium oxygen 2 Semi-conductive titaniumoxides[J].Physica Status Solidi A Applied Research,1982,69:287-295. |
| [12] | Suzuki R O;Aizawa M;Ono K .Calcium-deoxdation of niobium and titanium in Ca-saturated CaCl2 molten salt[J].Journal of Alloys and Compounds,1999,288:173-182. |
| [13] | 胡小锋,许茜.CaCl2-NaCl熔盐电脱氧法制备金属Ta[J].金属学报,2006(03):285-289. |
| [14] | Ono K;Suzuki R O .A new concept for producing Ti sponge:Calciothermie reduction[J].JOM-Journal of the Minerals Metals and Materials Society,2002,54(02):59-61. |
| [15] | Uday B. Pal;David E. Woolley;George B. Kenney .Emerging SOM technology for the green synthesis of metals from oxides[J].JOM,2001(10):32-35. |
| [16] | Ajay Krishnan .Solid Oxide Membrane Process for The Direct Reduction of Magnesium from Magnesium Oxide[D].Boston University,2006. |
| [17] | Yan X Y;Fray D J .Production of niobium powder by direct electrochemical reduction of solid NbO in a eutectic CaCl2-NaCI malt[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2002,33(05):685-693. |
| [18] | 陈朝轶;鲁雄刚;李谦 等.SOM法制备金属钽的研究[EB/OL].http://www.paper.edu.cu,2006-08-48. |
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