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Sulfuric acid leaching of low-grade refractory tantalum–niobium and associated rare earths minerals in Panxi area of ChinaBiao Wu,He Shang,Jian-Kang WenNational Engineering Laboratory of Biohydrometallurgy,General Research Institute for Nonferrous Metals摘 要:By mineral liberation analyzer(MLA) automated quantitative system, the niobium–tantalum ore......
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巯基棉富集分光光度法测定石煤渣中痕量钽罗道成1,刘俊峰1(1.湖南省湘潭市湖南科技大学化学化工学院)摘 要:痕量钽(被巯基棉预富集后用分光光度法进行测定.在H2SO4介质中,Triton X-100存在下,钽(与丁基罗丹明B(BRB)发生显色反应,生成摩尔比为1∶1的稳定络合物,络合物的最大吸收波长为565 nm,表观摩尔吸光系数为1.46×105 L·mol-1·cm-1,钽的质量浓度在0600μg/L范围内符合比尔定律.经巯基棉富集后,钽的测定灵敏度可提高数倍,大量共存离子不干扰钽的测定.建立的方法应用于石......
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Inhomogeneous deformation of {111} grain in cold rolled tantalumYahui Liu1,Shifeng Liu1,2,Chao Deng1,2,Xiaoli Yuan4,Qing Liu11. College of Materials Science and Engineering,Chongqing University2. Electron Microscopy Center of Chongqing University,Chongqing University4. School of Metallurgy and Mater......
微波消解-电感耦合等离子体原子发射光谱法测定矿石样品中铌钽倪文山1,张萍1,姚明星1,李贤珍1(1.河南省郑州市地质科学院 郑州矿产综合利用研究所)摘 要:通过微波加热,氢氟酸溶解矿石样品,再以酒石酸溶液处理,使铌,钽完全进入溶液.以铌316.340{106}nm光谱线和钽268.517{125}nm光谱线为分析线,在选定的仪器参数下用电感耦合等离子体原子发射光谱法(ICP-AES)测定了溶液中的铌和钽.铌,钽原子发射光谱强度与ρ(Nb2O5)和ρ(Ta2O5)在0~6μg/mL范围内呈良好的线性关系,铌,钽的......
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Promoting effect of tantalum and antimony additives on deNOx performance of Ce3Ta3SbOx for NH3-SCR reaction and DRIFT studiesNing Liu1,Jingyu Wang1,Fengying Wang1,Jun Liu21. School of Environment and Safety Engineering,North University of China2. Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province,Taiyuan University of Technology摘 要:
Promoting effect of tantalum and antimony additives on deNOx performance of Ce3Ta3SbOx for NH3-SCR reaction and DRIFT studiesNing Liu1,Jingyu Wang1,Fengying Wang1,Jun Liu21. School of Environment and Safety Engineering,North University of China2. Key Laboratory of Coal Science and Technology Ministry of Education and Shanxi Province,Taiyuan University of Technology摘 要:
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