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CRYSTALLIZATION OF SODIUM TUNGSTEN BRONZE USING ELECTROLYSIS WITHREVERSE CURRENT+Huang Huan1; Yang Songqing1; Tang Shu2(1. Institute of Metallurgical Physicochemistry and Materials, Central South... tungsten bronze (Na_xWO_3) crystals were prepared from a molten mixture of sodium tungstate (Na_2WO_4 ) and tungstic trioxide (WO_3) at 800℃. Crystal structure, lattice parameter, and sodium content......
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Crystal growth of tungsten during hydrogen reduction of tungsten oxide at high temperature WU Xiang-wei(吴湘伟)1, 2, LUO Jing-song(罗劲松)2, LU Bi-zhi(陆必治)2, XIE Chen-hui(谢晨辉)2, PI Zhi-ming...; Abstract: Crystal growth of tungsten during hydrogen reduction of tungsten oxide (WO3) to prepare......
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of arsenic complexes in the sulfidizing separation of tungsten and molybdenum was calculated, and the distribution graphs of various arsenic ions vs pH and arsenic ion vs molar ratio of S to As were... words: thio-arsenate; removal of arsenic; sulfidation reaction; thermodynamics 随着钨矿资源的不断开发和利用,优质钨资源日益减少,处理品位低,杂质含量高的钨矿已成为钨冶金中一个很现实的问题.这些高杂质的钨矿中,除了杂质元素钼以外,砷的含量也日益增加.而随着硬质合金,电子,国防等工业的发展,对钨制品尤其是对许多尖端用途所......
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residue, a corresponding technology to prepare mangano-manganic oxide was adopted as follows: low temperature sulfating roasting tungsten residue, leaching, removal of impurities in leachate...H2O2氧化反应20min,获得粒度小于0.1 μm的Mn3O4粉末. 关键词:四氧化三锰;钨渣;回收;焙烧 中图分类号:TF09 文献标志码:A Novel process for preparation of mangano-manganic oxide from tungsten......