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treatment on morphology of flower-like aluminum hydroxide sulfate product assembled by flakes FU Gao-feng1, WANG Jing2, LIU Yan2, DING You-dong1 (1. School of Materials and Metallurgy, Northeastern... hydroxide sulfate and flower-like boehmite were synthesized using Al2(SO4)3·18H2O as precursor, urea as precipitator, and mixture solution of ethanol and water (volume ratio is 2:1) as solvent......
hydroxide added.The apparent activation energy was calculated,and the results indicate that the overall reaction involves more than one single step.The reaction with a lower content(<15 wt%) of calcium hydroxide can be divided into two steps,while the reaction with a higher content(>15 wt%) involves another step which denotes the decomposition of newly formed calcium carbonate during roasting.The......
hydroxide added.The apparent activation energy was calculated,and the results indicate that the overall reaction involves more than one single step.The reaction with a lower content(<15 wt%) of calcium hydroxide can be divided into two steps,while the reaction with a higher content(>15 wt%) involves another step which denotes the decomposition of newly formed calcium carbonate during roasting.The......
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Catalytic Action of Nanoparticle on Electrodeposition of Nickel XU Bin-shi1,TU Wei-yi1,DONG Shi-yun1 (1.State Key Laboratory of Remanufacture Technology, Armored Force Engineering Institute, Beijing 100072) 摘要:The electrochemical behavior from n-Al2 O3 or n-SiO2 composite brush plating system and quick nickel solution were investigated using cyclicvoltammetry. The interaction between......
钼矿.针对硫酸化焙烧能耗高,腐蚀大的问题,有学者提出了硫酸铵焙烧-水浸工艺[11],该工艺可以很好地抑制铁的溶出,并取得了较高的镍钴浸出率,不足之处是硫酸铵的用量较大. 表1 几种镍矿湿法冶金工艺 Table1 Several kinds of nickel hydrometallurgy process 2.2 高压酸浸工艺 与氨浸工艺相比,高压酸浸工艺的一个主要优点是钴的回收率较...,对于高镁型硫化镍矿,在非常规体系下生物浸出具有一定的可行性,但仍需进行更深入的研究. REFERENCES [1] 陈浩琉. 镍矿床[M]. 北京: 地质出版社, 1993. CHEN Hao-liu. Nickel deposite[M]. Beijing: Geology Publishing House, 1993. [2] 任 杰. 海外矿产资源项目投资风险评估与实物期权研究[D]. 北京......
Thermodynamics analysis on sodium hydroxide decomposition of wulfenite ZHANG Gang, ZHAO Zhong-wei, LI Jiang-tao, CHEN Ai-liang, HUO Guang-sheng, LI Hong-gui (School of Metallurgical Science...-Mo-H2O system was established on the basis of thermodynamic data at 25 ℃. Thermodynamic analysis was carried out to show the effect of technical conditions on sodium hydroxide decomposition of wulfenite......
="ChDivSummary" name="ChDivSummary">According to the selection principle of grain refiners and calculation of planar disregistries, CeO2 and TiB2 particles were selected as the grain refiners of pure nickel. The change of grain size and refining effects of different refiners under the same melting conditions were investigated. The results show that the grain size of pure nickel gradually reduces......
Extraction studies of cobalt (Ⅱ) and nickel (Ⅱ) from chloride solution using PC88A LUO Lin(罗 琳)1, WEI Jian-hong(魏建宏)1, WU Gen-yi(吴根义)1, F. TOYOHISA2, S. ATSUSHI3 1. College of Resources...; Abstract: Solvent extraction study of cobalt and nickel were carried out from a chloride solution......
