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, China) Abstract: The feasibility of separation of impurities in refined bismuth and sulphur deleadization with vacuum distillation was studied theoretically. Experimental studies on sulphur... condition was achieved. The content of lead in refined bismuth can be decreased from 30μg/g to 0.21μg/g, which has reached the level of "5N" high-purity bismuth. Other impurities in refined bismuth can......
Preparation of high-purity antimony oxychloride from high-arsenic refined bismuth dust ZHENG Ya-jie, TENG Hao, BAI Meng (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: Preparation of high-purity antimony oxychloride from high-arsenic refined bismuth dust in a process of hydrochloric acid leaching, antimony powder reduction......
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studied. The results show that the evaporation rate of zinc is 4.1% and bismuth in the residues is 99.78% when Bi-Zn alloy containing 3.71% (mass fraction) zinc is refined for 30 min at 923 K and 20 Pa...含量降低到0.22%,Bi的纯度富集到99.78%.另外,Zn含量为1.02%~4.66%的铋熔体经过真空处理,Bi的纯度达到99.7%以上.铋熔体可通过真空方法有效除Zn,金属回收率高,并且对环境无污染,得到的Zn还可返回粗铋加锌提银工段再使用.关键词:真空蒸馏；脱锌；铋熔体Vacuum refining bismuth melts to remove zincXU Yan, QIU Ke......
Syntheses and Crystal Structure Characterizations of New Rare Earth Copper Bismuth Compounds RE CuBi2(RE＝La,Gd and Dy) 赵景泰1,鲁玉明1,杨昕昕1,陈昊鸿1 (1.State Key Laboratory of High Performance Ceramics... melting method followed by annealing. The crystal structures refined using Rietveld method and X-ray powder diffraction data show to be isotypic to CaMnBi2 structure type with space group P4/nmm(No.129......
Nanometer bismuth oxide produced by resistance heating vapor oxidation HU Han-xiang(胡汉祥)1,2, QIU Ke-qiang(丘克强)1 1. School of Chemistry and Chemical Engineering, Central South University, Changsha...: Bismuth oxide has wide applications in superconductive material, photoelectric material, electronic ceramic, electrolyte, and catalysts. To produce ultrafine bismuth oxide powders, some costly......
J. Cent. South Univ. (2019) 26: 2404-2417 DOI: https://doi.org/10.1007/s11771-019-4183-7 A method combining refined composite multiscale fuzzy entropy with PSO-SVM for roller bearing fault... GmbH Germany, part of Springer Nature 2019 Abstract: Combining refined composite multiscale fuzzy entropy (RCMFE) and support vector machine (SVM) with particle swarm optimization (PSO) for diagnosing......
process of bismuth sulfide ore and pyrolusite ZHANG Chuanfu, XIA Chuping, WANG Zhijian, ZHAN Jing, WU Jianhui (School of Metallurgy and Environment, Central South University, Changsha 410083, China) Abstract: The new method of interactive roasting with bismuth sulfide ore and pyrolusite was put forward, which consists of two simultaneous processes: sulphating roasting of manganese oxide......
J. Cent. South Univ. (2017) 24: 30-38 DOI: 10.1007/s11771-017-3405-0 Adsorption of residual amine collector HAY from aqueous solution by refined carbon from coal fly ash and activated carbon LI Xian... Utilization of Non-metallic Mineral Resources, Guizhou University, Guiyang 550025, China Central South University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: Refined carbon (RC) derived......
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......
