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reduction; molten chloride; calcium niobates; acid leaching 1 Introduction Niobium carbide (NbC) is a non-oxide ceramic material primarily used as the starting material for the commercial production... reduced to Nb in molten salt, experiencing some intermediate products of calcium niobates and niobium suboxides. Nb metal obtained was converted to NbC with assistance of carbon. The reduction of Nb oxides......
XRD patterns of calcium zincate, zinc oxide and XRD pattern of calcium zincate sample 2.2 锌酸钙样品的热分析 锌酸钙的热重分析结果如图2所示.可见,样品在136 ℃和174 ℃ 2处各产生了1个失重吸热峰.根据<化学数据速查手册>[21],Zn(OH)2的失水分解温度为125 ℃,郑文杰等... 文献标识码:A 文章编号:1672-7207(2008)05-0918-05 Preparation of calcium zincate as negative electrode material for Ni/Zn......
Trans. Nonferrous Met. Soc. China 26(2016) 849-858 Formation mechanism and crystal simulation of Na2O-doped calcium aluminate compounds Yong-pan TIAN, Xiao-lin PAN, Hai-yan YU, Gan-feng TU School of Metallurgy, Northeastern University, Shenyang 110819, China Received 23 April 2015; accepted 10 November 2015 Abstract: Calcium aluminate clinkers doped with Na2O were synthesized using analytically......
; 文献标识码:A Preparation and characteristics of calcium zincate coated by calcium stannate YANG Zhan-hong, WANG Sheng-wei, ZENG Li-hui, WANG Xiao-hua, LIU Dong-ren (School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China) Abstract: Tin compound was coated on the surface of the calcium zincate by chemical deposition. The properties......
): 26-30. [23] ZHANG Ju-hua, ZHANG Wei, ZHANG Li, GU Song-qing. Mechanism of vanadium slag roasting with calcium oxide[J]. International Journal of Mineral Processing, 2015, 138: 20-29. [24] SADYKHOV... technology by oxygen-enriched calcium method[J]. Iron steel vanadium titanium, 2014, 35(4): 1-5. [8] WANG Tai-ying, XU Long-jun, LIU Chen-lun, ZHANG Zhao-di. Calcified roasting-acid leaching process......
845 文献标志码:A 文章编号:1672-7207(2013)01-0032-08 Extraction technology of calcium from rare earth tailings and preparation of calcium sulfate whiskers ZHANG Liqing, ZHAO Lingyan, ZHOU Huafeng, YUAN Benfu (Key Laboratory of Rare-earth Chemistry and Applying Liaoning Province, Shenyang University......
Ce-Zr-Tb Oxide Solid Solution as Key Material for Three-Way Catalyst Hu Yucai1 (1.School of Chemistry and Material Sciences, Yantai Normal University, Yantai 264025, China) Abstract:Ce-Zr-Tb oxide... of a new generation of TWC. Key words:Ce-Zr-Tb oxide solid solution; three-way catalyst; characterization; [全文内容正在添加中] ......
is equal or greater than 0.001 mol/L, the total concentration of calcium in solution can be reduced to below 10–5 mol/L. Key words: manganiferous wastewater; thermodynamic analysis; deep purification; magnesium; manganese; calcium 基金项目:国家重点基础研究发展计划资助项目(2007CB613604) 收稿日期:2011-05-21；修订日期:2011-10-10 通信作者:楚 广,教授,博士; E-mail: chuguang2006@163.com ......
Development of calcium coke for CaC2 production using calcium carbide slag and coking coalXu-zhong Gong1,2,3,Jun-qiang Zhang1,Zhi Wang1,3,Dong Wang1,3,Jun-hao Liu1,3,Xiao-dong Jing1,3,Guo-yu Qian1,31.... Chemical Engineering School, University of Chinese Academy of Sciences摘 要:A type of calcium coke was developed for use in the oxy-thermal process......
Determination of Impurity Elements in Pure Cerium Oxide Product Chen Limin1,Li Jie1,Li Peizhong1 (1.Inner Mongolia Baogang Rare Earth High Science and Technology Co. Ltd.,Baotou 014010, China) Abstract:Determination of the rare earth impurity in pure cerium oxide is done by ICP-MS.The interference and other factors which affect analytical results were discussed.The accuracy are between 0.81......
