|
|
|
| STUDIES ON THE KINETICS OF Cu DISSOLUTION IN AQUEOUS AMMONIACAL SOLUTION |
| Xia Guangxiang;Hu Zhongwu Institute of Chemical Metallurgy; Academia Sinica |
|
Cite this article:
Xia Guangxiang;Hu Zhongwu Institute of Chemical Metallurgy; Academia Sinica. STUDIES ON THE KINETICS OF Cu DISSOLUTION IN AQUEOUS AMMONIACAL SOLUTION. Acta Metall Sin, 1980, 16(4): 442-453.
|
|
|
Abstract Studies on the kinetics of copper dissolution in aqueous ammoniacal solutionsaturated with oxygen-nitrogen mixtures of different composition under ambientpressure have been carried out. The reaction of copper dissolution is electrochemi-cal in nature. When the rate of dissolution is limited by the cathodic reaction,the transfer of oxygen is a controlling factor. On the contrary, when the processis limited by the anodic reaction, the reaction will be controlled by the rate ofammonium ion diffusion as well as by the chemical reaction rate with ammo-nia. Criteria for the rate of dissolution of copper will rise or fall with timehave been found. Conditions for the autocatalytic reaction to take place havealso been investigated.
|
|
Received: 18 April 1980
|
[1] Benedict, C. H. and Kenny, H. C., Trans. AIME, 70 (1924) , 595．
[2] Van Arsdale, G. D., Hydrometallurgy of Base Metals, McGraw-Hill, 1953, p. 140．
[3] Ryan, V. H. and Tschirner, H. J., Proc. 13th Annual Meeting, Metal Powder Assoc., New York, VI-2, 1957, p. 25．
[4] Evans, D. J. I., Romanchuk, S. and Mackiw, V. N., Can. Mining Met. Bull, 54 (1961) , 530．
[5] Brooks, P. T., Dean, K. C. and Rosenbaum, J. B., Proc. Inst. Miner. Process. Congr. 9th, 1970, 328--33, Ustav. Vyzk. Rud: Prague, Czech.
[6] Yamasaki, E., Chem. Abstr. 14 (1920) , 3558．
[7] #12
[8] Lane, R. W. and McDonald, H. J., J. Amer. Chem. Soc., 68 (1946) 1699．
[9] Halpern, J., J. Electrochem. Soc. 100 (1953) , 421．
[10] Lu, B. C. Y. and Graydon, W. F., J. Amer. Chem. Soc. 77 (1955) , 6136．
[11] Smith, K. A., Lower, C. W. and Hockings, W. A., Inter. Symp. Hydrometallurgy 2nd, Evans, D. J. I. & Shoemaker, R. S., 1973, New York, p. 265．
[12] Nicol, M. J., J. S. Afr. Inst. Mining Met., 75 (1975) , 291．
[13] #12
[14] Sedzimir, J. and Bujanska, M., Hydrometallurgy. 3 (1978) , 233．
[15] 夏光祥,陈家镛,全国第一届冶金过程物理化学学术报告会论文集,上海科学技术出版社,1965年,103页.
[16] Wetlesen,C.U.,Anal.Chim.Acta,16(1957) ,268．
[17] 佐滕教男,日本金属学会志,24(1960) ,126． |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
