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reaches 99. 75a/o in this process. Key words: removing molybdenum from tungstate; metalsulfide; sulfuration; tungsten metallurgy 陋着优质钨资源的不断消耗以及用户对钨产品质量要求的不断提高,钨钼分离已经成为钨冶金中的一个重... 410083, China) Abstract: The effect of removing molybdenum from tungsten solution by using metal sulfides, such as CuS, CoS, NiS,PbS, FeS, ZnS and HgS, was studied. After......
: 清华大学出版社, 2013. ZHAO Zhong-wei. Tungsten metallurgy: Fundamentals and applications[M]. Beijing: Tsinghua University Press, 2013. [16] MACINNIS M B, KIM T K. Method for removing molybdenum from.... Removing molybdenum from tungstate solution with metal sulfides[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(2): 302-306. [43] 李运姣, 李洪桂,孙培梅, 苏鹏抟, 赵中伟, 刘茂盛. 选择性沉淀法从钨酸盐溶液中除钼, 砷, 锡等杂质的工业试验[J......
to Mo of 53.33 are obtained after column test. Key words: high concentrated tungstate and molybdenum solution; ion exchange; batch tests; column tests 1 Introduction Nowsday, tungsten and molybdenum... for deep removal of molybdenum from tungstate solution is based on adsorbing MoS42- by copper compounds, which has been widely applied in China. However, when the Mo to W molar ratio is more than 1/20......
Pressure leaching of bismuth sulfide concentrate containing molybdenum and tungsten in alkaline solutionZHANG Du-chao(张杜超), YANG Tian-zu(杨天足), LIU Wei-feng(刘伟锋), WU Jiang-hua(吴江华)(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)Abstract:The leaching results of bismuth sulfide concentrate containing molybdenum and tungsten in air-H2O2-NaOH system......
Preparation of Sodium Thiomolybdate from Sodium Tungstate Solution Using Sulfide as Sulphidizing Reagent曹佐英,喻红竹摘 要:The preparation of sodium thiomolybdate... was proved to be a desirable and suitable sulphidizing reagent for separation of molybdenum from tungsten. The conditions of proceeding sulphidization of MoO42-, such as the mass ratios of S......
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to the efficient preparation of PTO powder and cleaner tungsten metallurgy. Key words: pyrochlore-type tungsten oxide; ammonium tungstate solution; ferrous ion; crystallization; mechanism 1 Introduction... as a potential intermediate for preparing tungsten trioxide and tungsten powder in the cleaner extractive metallurgy of tungsten from scheelite and/or wolframite concentrates [5]. Considering the great......
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]. Hydrometallurgy, 1990, 25(2): 125-135. [3] HUO Guang-sheng, ZHAO Zhong-wei, LI Hong-gui, SUN Pei-mei, LI Yun-jiao. Removing molybdenum from tungstate solution with metal sulfides [J]. The Chinese Journal... solution containing some other impurities. All these indicate the ferrous salts have great potential for removing W from Mo on a commercial scale. Key words: tungsten; molybdenum; selective precipitation......
qualitative rules of the mechanisms and the effects of mechanical activation for sulfide ores are obtained. 2 Experimental 2.1 Materials Natural pyrite ore was purchased from a domestic geological... granulometric surface areas(SG) of mechanically activated sulfide ores were calculated statistically from the corresponding particle size distribution data measured on a Mastersizer 2000 Laser Diffraction......