共搜索到5093条信息，每页显示10条信息，共510页。用时：0小时0分0秒573毫秒
Kinetics of nitric acid leaching of cerium from oxidation roasted Baotou mixed rare earth concentrateKai Li1,2,Ji Chen1,Dan Zou1,Tianchi Liu1,2,Deqian Li11. State Key Laboratory of Rare Earth... of nitric acid leaching of cerium was investigated for the oxidation roasted Baotou mixed rare earth concentrate. The effects of leaching temperature, HNO3 concentration, liquidesolid ratio(L/S)and stirring......
Kinetics of nitric acid leaching of cerium from oxidation roasted Baotou mixed rare earth concentrateKai Li1,2,Ji Chen1,Dan Zou1,Tianchi Liu1,2,Deqian Li11. State Key Laboratory of Rare Earth... of nitric acid leaching of cerium was investigated for the oxidation roasted Baotou mixed rare earth concentrate. The effects of leaching temperature, HNO3 concentration, liquidesolid ratio(L/S)and stirring......
: A novel multilayer Mg-Al intermetallic coating on the magnesium alloy was obtained by AlCl3-NaCl molten salt bath treatment. The molten salt was treated at 400 °C, which is lower than the treatment... value of the multilayer coating on the magnesium alloy by molten salt bath treatment is greater than that of the uncoated one, which is attributed to the homogenously distributed intermetallic phases......
transformation of the diasporic bauxite-sodium hydroxide-calcium hydroxide system in microwave heating LE Thiquynhxuan1, 2, 3, JU Shaohua1, 2, 3, PENG Jinhui1, 2,WANG Shixing1, 2, 3, ZHOU Liexing1, 2, WANG... and alkaline (Ca(OH)2+supersaturated NaOH solution) was roasted with microwave energy. The effects of operation parameters, such as microwave roasting temperature, NaOH amount, Ca(OH)2 amount......
without selectivity. The presence of sodium sulfide enhances the flotation of smithsonite and calcite while inhibits quartz. Moreover, both sodium silicate and sodium hexametaphosphate exhibit good... electrostatic adsorption and chemical adsorption, and the presence of sodium sulfide enhances the adsorption of GE-609. Key words: smithsonite; quartz; calcite; alkyl diamine ether; sodium sulfide......
level donors in passive film formed on surface of stainless steel in 5% salt solution WANG Chao(王超), SHENG Min-qi(盛敏奇), ZHONG Qing-dong(钟庆东), CHOU Kuo-chih(周国治), LU Xiong-gang(鲁雄刚) Shanghai Key... the changing characters of film’s deep donor level during immersion time in salt electrolyte in this work. 2 Experimental One electrode sample was prepared in this work. This electrode was made of 304......
......
Phenomena in late period of seeded precipitation of sodium aluminate solution LI Xiao-bin(李小斌), FENG Gang-tao(冯港涛), ZHOU Qiu-sheng(周秋生), PENG Zhi-hong(彭志宏), LIU Gui-hua(刘桂华) School.... However, the agglomeration bodies break in the case of prolonging precipitation due to the mechanical effect, which results in the increase of particle number. Key words: sodium aluminate solution; seeded......
Periodical attenuation of Al(OH)3 particles from seed precipitation inseeded sodium aluminate solution WU Yu-sheng(吴玉胜)1, ZHANG Di(张 迪)1, LI Ming-chun(李明春)1, BI Shi-wen(毕诗文)2, YANG Yi-hong... the decrease of the specific surface area of seeds, which is the major reason causing explosive attenuation of Al(OH)3 particles in seed precipitation process. Key words: Bayer process; sodium......
Trans. Nonferrous Met. Soc. China 25(2015) 608-614 Interaction of sulfur with iron compounds in sodium aluminate solutions Xiao-bin LI, Chong-yang LI, Zhi-hong PENG, Gui-hua LIU, Qiu-sheng ZHOU, Tian... 2014 Abstract: Reaction behaviors of sulfur and iron compounds in sodium aluminate solutions were investigated. The results show that iron compounds can remarkably remove the S2- but cannot get rid......
