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Effect of Calcium on the Vanadium Extraction from High Calcium Type Stone Coal包申旭1,2,LIANG Liang1,张一敏1,2,HAN Shihua1,HU Yangjia11. College of Resources and Environmental Engineering, Wuhan University... by water and dilute acid separately after being roasted with different dosage of Na Cl. The water leaching rate of vanadium(WLRV) was low and only 26.8% of vanadium can be leached by water when 4% Na Cl......
Determination of Trace Nickel in Manganese Dioxide by DifferentialPulse Polarography杨生恕,俞征摘 要:ＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＮｉｃｋｅｌｉｎＭａｎｇａｎｅｓｅＤｉｏｘｉｄｅｂｙＤｉｆｆｅｒｅｎｔｉａｌＰｕｌｓｅＰｏｌａｒｏｇｒａｐｈｙＹａｎｇＳｈｅｎｇｓｈｕａｎｄＹｕＺｈｅｎｇ(杨生恕)(俞征)(ＤｅｐｔｏｆＣｈｅｍｉｓｔｒｙ,Ｇｕ...关键词:......
Valency Study of Vanadium in Stone Coal of Southern ChinaXu Guozhen;Ge Nai’e;Chen Jianping;Shen Shaobo Chinese University of Geosciences,Beijing 100083摘 要:<正> Vanadium-bearing stone coal is a new resource of vanadium. V in stone coal mainly exists in three oxidation states: 7.84%V(Ⅲ), 72.08% Ⅴ(Ⅳ) and 20.08% Ⅴ(Ⅴ). The change and distribution......
The Effect of Cerium Dioxide (CeO2) in an Anti-corrosion and Self-lubricating Coating张军,赵家政,鄂吉胜,党鸿辛摘 要:<正> The effect of cerium dioxide(CeO2... dioxide can modify the microstructure and tribological properties of the coating.Model LIC-23 composite coating which contains CeO2 performs well as a self-lubricating coating inhydrochloric acid......
Thermodynamic studies on gas-based reduction of vanadium titano-magnetite pelletsJun-wei Chen,Yang Jiao,Xi-dong Wang摘 要:Numerous studies have focused on the reduction thermodynamics of ordinary iron ore; by contrast, the literature contains few thermodynamic studies on the gas-based reduction of vanadium titano-magnetite(VTM) in mixed atmospheres of H2......
低品位钒矿直接酸浸提钒工艺研究李欣1,王毅1,朱军2(1.西安建筑科技大学 冶金工程学院,陕西西安 7100552.西安建筑科技大学冶金工程学院,西安710055)摘 要:针对提钒工艺现状存在问题,根据物理选矿结果,确定了抛尾富集物酸法直接浸出钒的工艺方法.通过浸出试验,对酸浸提钒阶段各影响因素进行优化.确定了适宜的磨矿粒度,酸度,浸出温度,液固比和浸出时间等工艺条件,钒的浸出率可达到90%以上.关键词:钒矿； 物理选矿； 直接酸浸； 钒浸出率......
低钒铁水提钒试验董万春1,戈文荪2,施哲3(1.攀钢集团成都钢钒有限公司,四川成都 6103032.攀钢集团研究院有限公司,四川成都 6117313.昆明理工大学 材料与冶金工程学院,云南昆明 650093)摘 要:根据攀成钢含钒铁水的特点和设备,工艺实际情况,采用转炉双联提钒法,开展了低钒铁水提钒工业试验,生产出成品试验钒渣143.2t.铁水提钒各项技术经济指标优良,半钢[C]3.23%,[V]0.036%,温度1 395.5℃;钒渣V2O56.71%,TFe34.2%;钒氧化率76%,钒回收率为62.78%......
Precipitation Characteristics and Mechanism of Vanadium Carbides in a V-Microalloyed Medium-Carbon SteelXiao-Lin Pan1,Minoru Umemoto21. School of Metallurgy, Northeastern University2. Department of Mechanical Engineering, Toyohashi University of Technology摘 要:The precipitation characteristics and mechanism of vanadium carbides during isothermal......
Effects of trace addition of vanadium and depression amount on recrystallization temperature and mechanical performance of 5182 belts GAO Jia-cheng(高家诚)1, CHEN Zhi-qiang(陈志强)1, MING Wen-liang(明文良... was also discussed. Keywords: 5182 belts; vanadium; recrystallization temperature; mechanical performance 1 Introduction The 5××× series aluminum alloys which cannot be strengthened by heat treatment......
Chao, WANG Zhi-gang, REN Da-peng, JIA Jian-ping (National Key Laboratory for Surface Physics and Chemistry, Mianyang 621907, China) Abstract: The microstructures of vanadium alloys before and after... and the shrinking ratio is 2.8% compared with the pure vanadium. The main precipitation in the bulk grains is the complex Ti rich Ti-CNO phase, which has a plate shape with the width of about 100 nm......
