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The physicochemical reaction in the roasting process is further analyzed, in which the chemical reaction is the REDOX reaction of MoS2 as well as the reactions of molybdenum trioxide with impurity... temperature of molybdenite trioxide is 600 °C, so the significant mass change in the high temperature range is mainly attributed to the sublimation of molybdenum trioxide. In order to eliminate......
, 28(4): 33-35. ZHANG Wen-zheng. Production of technical molybdenum oxide, ammonium dimolybdate and pure molybdenum trioxide from low grade molybdnite concentrates or molybdenum intermediate product[J...]. Chinese Journal of Rare Metals, 2007, 31(6):110-113. [9] KETCHAM J. Pressure oxidation process for the production of molybdenum trioxide from molybdenite. United States Patent, US6149883[P]. 2000-11-21......
, and it is evident that sulfate roasting effect has a positive correlation with ferric sulfate concentration, because more ferric sulfate results in more sulfur trioxide, which can react with zinc ferrite...% as the temperature continues to increase. It may be attributed to the fact that the ferric sulfate is more easily to transform into sulfur trioxide at higher temperatures, moreover, the sulfate reactions can......
involves roasting of the concentrate, purification of the resultant calcining, either by distillation of MoO3, or by a hydrometallurgical route, and, finally, hydrogen reduction of the trioxide...): 22-26. (in Chinese) [3] VICLOR J. Pressure oxidation process for the production of molybdenum trioxide from molybdnite: USA, 6149883[P]. 2000- 11-21. [4] MANOJ K, MANKHAND T R, MURTHY D S R. Refining......
XRD pattern of reduction residue Table 3 Components of reduction residue (mass fraction, %) It can be seen from Fig.2 that the white powder is As2O3. Arsenic trioxide separates out of evaporated... in conjunction with lime softening: US 6802980B1 [P]. 2004-12-12. [20] ZHENG Ya-jie, LUO Yuan, WANG Yong. Method of preparing arsenic trioxide from As-containing wastewater: CN, 200710035704.2 [P......
and photoelectrochemical behavior of electrodeposited tungsten trioxide films[J]. Solar Energy Materials & Solar Cells, 1999, 58: 133-140. [4]Pehlivan E, Tepehan F Z, Tepehan G G. Comparison of optical...]. Sensors and Actuators B, 1999, 60: 57-63. [8]Bamwenda G R, Arakawa H. The visible light induced photocatalytic activity of tungsten trioxide powders[J]. Applied Catalysis A, 2001, 210: 181-191. [9......
. Production of submicron tungsten powder by hydrogen reduction of tungsten trioxide[J]. International Journal of Refractory Metals & Hard Metals, 1986, 5(2): 108-111. [8]徐晓娟, 张丽英, 郭志猛, 等. 纳米级WO3粉的还原动力学特征[J]. 粉末冶金技术, 2002, 20(3): 147-149. XU Xiao-juan, ZHANG Li-ying, GUO Zhi-meng, et al. Reduction kinetics characteristic of nanometer tungsten trioxide powders[J]. Powder Metallurgy Technology, 2002, 20......
compounds are commonly used as flame retardants. Conventional antimony compounds such as antimony trioxide are of a big particle size, resulting in low chemical activity, poor combination between antimony... [P]. US 4348301, 1982. [6]Masaharu S, Shigeo S. Manufacture of Antimony Pentoxide by Oxidation of Antimony Trioxide [P]. JP 8059243, 1996. [7]WANG Hai-tang, WANG Xiao-wei, ZHANG Wei-yuan, et al......
: [1] 肖政伟. 超细Bi2O3的制备[D]. 长沙: 中南大学冶金科学与工程学院, 2004: 4-9. XIAO Zheng-wei. Preparation for bismuth trioxide superfine powder[D]. Changsha: Central South University. School of Metallurgical Science...状及发展趋势[J]. 湿法冶金, 2005, 24(3): 121-127. WU Shao-hua, LIU Jin, LAN Yao-zhong. Research status and development trend of preparation methods of bismuth trioxide[J]. Hydrometallurgy of China, 2005, 24(3......
process[J]. Nonferrous Metals, 2006, 58(4): 36-38. [4] 马杨辉, 阳雄魁. 湿法炼锌锑盐锌粉除钴的生产实践[J]. 中国有色冶金, 2005, 2(1): 22-23. MA Yang-hui, YANG Xiong-kui. Production practice of cobalt removal with antimony trioxide.... Reconstruction practice of the purification process for zinc sulfate solution with antimony trioxide [J]. Nonferrous Metals: Extractive Metallurgy, 2010(4): 22-24. [9] 曾桂生, 谢 刚. 高钴硫酸锌溶液中锌粉净化除钴的机理[J]. 中国有色金......