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and the apparent activation energy (Ea) of the leaching reaction is 34.067 kJ/mol, and the apparent reaction order of aluminum removal with pressure leaching is 0.346. The kinetic equations for the effect... the aluminum removal with very good agreement between experimental and calculated values. Key words: metallurgical grade silicon; pressure leaching; kinetics; purity; aluminum removal 基金项目:国家自然科学基金资助项目......
Leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate as oxidantLIU Zhi-xiong(刘志雄)1, YIN Zhou-lan(尹周澜)2, CHEN Yi-guang(陈义光)3, XIONG Li-zhi(熊利芝)3(1.... College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China)Abstract:The leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium......
; 明矾石加压酸浸工艺流程 Fig. 1 Flow chart of pressure acid-leaching of alunite ore 2 实验 2.1 实验原料 实验原料来自福建紫金山选铜尾矿中浮选得到的明矾石尾矿,矿样粒度分析结果见表1,其主要化学成分和XRD谱分析结果分别见表2和图2所示.实验所用硫酸为分析纯级98%H2SO4(质量分数),用水均为去...下钾,铝的浸出率 Table 3 Leaching rate of Al and K under different conditions 在浸出温度220 ℃,浸出时间180 min,酸矿比3:1,搅拌速率600 r/min的条件下,考察不同初酸含量对钾,铝浸出率的影响,结果如图4所示. 图3 酸矿比对铝,钾浸出率的影响 Fig. 3 Effect......
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Microstructure of Nitrided Aluminum Alloys Using an Electron-Beam-Excited-Plasma (EBEP) H.Shoyama1,T.Hara1,L.Liu2,T.Hishida1,H. Tsubakino2,A.Yamamoto2 (1.Faulty of Engineering, Toyota Technological Institute, Nagoya 468-8511, Japan;2.Graduate School, University of Hyogo, 2167 Shosha, Himeji, 671-2201, Japan) 摘要:Nitriding of surface of aluminum alloys was carried out with using an electron-beam......
Co. Ltd., Kunming 650031, China) Abstract: The overall flow-sheet of producing chromium (Ⅲ) sulfate was described. The suitable conditions of each process such as sintering, leaching, aluminum removal... product is Cr2(SO4)3 solution containing 150-250 g/L Cr. Finally, the optimum parameters of sintering, leaching and aluminum-removal are temperature of 1 050-1 150 ℃, period of 60-90 min; temperature......
Trans. Nonferrous Met. Soc. China 22(2012) s656-s660 Microforming of superplastic 5083 aluminum alloy Md. Abu Mowazzem HOSSAIN1, Sung-Tae HONG1, Kyu-Yeol PARK1, Young-Sang NA2 1. School of Mechanical...: The mechanical behavior of superplastic 5083 aluminum alloy during microforming process was investigated by finite element analysis. A micro V-groove die was modeled to analyze the effects of forming......
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Mechanism of influence of ferric ion on electrogenerative leaching of sulfide minerals with FeCl3 WANG Shao-fen(王少芬)1, 2, FANG Zheng(方 正)2 1. Department of Chemistry and Environmental...; Abstract: A dual cell system was used to study the influence of ferric ion on the electrogenerative leaching of sulfide minerals. Reaction mechanisms for the ferric chloride electrogenerative leaching......
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