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): 1488-1496. LIU Zhi-xiong, YIN Zhou-lan, HU Hui-ping, CHEN Qi-yuan. Oxidative leaching of low-grade copper ore in ammonia-ammonium sulfate solution with ammonium persulfate[J]. The Chinese Journal... an ammonium sulfate roasting-leaching process[J]. International Journal of Minerals, Metallurgy and Materials, 2012, 19(5): 377-383. [8] RASHID K N, LEILA I S, AISULU K Z, MURATBEK T U. Recovery of value......
dihydroxycarbonate was firstly prepared by precipitation reaction of cobalt sulfate solution and ammonium carbonate solution, and then a hydrothermal process for the precursor was conducted to obtain the spherical....% in the obtained product. Key words: cobalt sulfate solution; cobaltous dihydroxycarbonate; ammonium carbonate; spherical cobalt carbonate; hydrothermal treatment 1 Introduction Cobalt carbonate is an important raw......
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(IARE) by the sulfate and chloride of ammonium,magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE..., the optimum concentration of aluminum sulfate is determined to be0.02 mol/L, which is much lower than that of ammonium sulfate and magnesium sulfate. To reduce the production cost and environmental......
(IARE) by the sulfate and chloride of ammonium,magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE..., the optimum concentration of aluminum sulfate is determined to be0.02 mol/L, which is much lower than that of ammonium sulfate and magnesium sulfate. To reduce the production cost and environmental......
Thermodynamics and kinetics of extracting zinc from zinc oxide ore by the ammonium sulfate roasting methodYi Sun,Xiao-yi Shen,Yu-chun ZhaiSchool of Materials and Metallurgy, Northeastern University摘 要:Thermodynamic analyses and kinetic studies were performed on zinc oxide ore treatment by(NH4)2SO4 roasting technology. The results show......
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of the visual observations and micro-analysis of concrete core samples after 6 and 12 months of their exposure to sodium, ammonium and magnesium sulfate solutions with the same concentration of sulfate ions... in the interface zone, which reduces the cohesiveness of the interface zone in concrete. For the concrete immersed in ammonium sulfate solutions, the conversation of mortar to some mush mass by ammonium......
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图分类号:TF803.21 文献标志码:A Oxidative leaching of low-grade copper ore in ammonia-ammonium sulfate solution with ammonium persulfate LIU Zhi-xiong1, 2, YIN Zhou-lan1, HU Hui-ping1..., China) Abstract: The oxidative leaching of low-grade copper ore was investigated in the ammonia-ammonium sulfate solution with ammonium persulfate. The effects of different parameters on the leaching......