Please wait a minute...
金属学报  1958, Vol. 3 Issue (2): 99-110    
  论文 本期目录 | 过刊浏览 |
高压氧氨水浸溶法对废渣中铜之提取及机理研究
刘纯鹏;周月华;谢宁涛
中国科学院冶金陶瓷研究所昆明工作站;中国科学院冶金陶瓷研究所昆明工作站;中国科学院冶金陶瓷研究所昆明工作站
KINETICS OF THE LEACHING OF COPPER SLAG IN AMMONIA SOLUTION UNDER HIGH OXYGEN PRESSURE
Liu;S.P.;Chow;Y.H.and Shieh;N.T.Kunming Research Station of the Institute of Metallurgy and Ceramics;Academia Sinica
全文: PDF(1825 KB)  
摘要: <正> 一、引言东川铜矿开采已有数百年的历史,过去用火法冶炼所得的炉渣藏量甚富,而渣中含铜则较一般炉渣高出很多,某区铜渣经工业取样分析结果,渣含铜平均品位为1.2%.
Abstract:The copper slag under investigation contains chiefly of metallic copper,matteand copper oxides.In order to dissolve both metallic and Cu_2S contained in matte,it is necessary to provide an oxidation condition for the leaching process in highpressure autoclave.The purpose of our investigation was:1.To study the kineticsof the leaching processes;2.To find the most efficient leaching conditions.The kinetics of the leaching process were investigated over a wide range ofNH_4OH and(NH_4)_2CO_3 concentrations,oxygen pressures,temperatures of the solu-tion and stirring velocities.The experimental results show that the leaching processes were diffusion con-trolled reactions,in other words,velocity of diffusion determines the over-all rateof the leaching process and by increasing the speed of agitation of the reactants,the % of Cu extraction is increased.All the experimental results show that the rate of leaching process obeys para-bolic law,that is,the % of copper extraction against time is parabolic functioThe parabolic constant K_P,and the slope of the parabolic were calculatedagainst velocities of stirring,oxygen pressures,concentrations of NH_4OH and(NH_4)_2CO_3and temperatures of the solution.The influence of pH values against the % of copper extraction is a straight-line relationship,but reaches a maximum at some definite pH value.The effect of temperatures upon the efficiency of copper extraction is alsostudied and the plot of log K_P against 1/T gives a straight line relationship.Theactivation energy of this diffusion controlled process was 3.1 kcal/mol.At 60℃,speed of stirring of 360 r.p.m.O_2-pressure of 5 atmospheres and0.65 N of NH_4OH+0.12 N of(NH_4)_2CO_3,the % of copper extraction of this slagwhich contained only 0.96% total copper,is 75% with a leaching time of 8 hours.
收稿日期: 1958-02-18     

引用本文:

刘纯鹏;周月华;谢宁涛. 高压氧氨水浸溶法对废渣中铜之提取及机理研究[J]. 金属学报, 1958, 3(2): 99-110.
. KINETICS OF THE LEACHING OF COPPER SLAG IN AMMONIA SOLUTION UNDER HIGH OXYGEN PRESSURE. Acta Metall Sin, 1958, 3(2): 99-110.

链接本文:

https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1958/V3/I2/99

[1] Paul H.Emmett,Catalysis,volume 1,Fundamental Principles(part 1) .
[2] June F.Zimmerman,J.Phy.Chem.and Colli.,562(1949) .
[3] J.Halpern,J.of the Elec.Chem.Soc.,100,№ 10,11(1953) .
[4] Huber T.S.Brittos,Hydrogen Ions,(1955) .
[5] #12
[6] Gunther Cohn,Chem.Reviews,42(1948) ,p.527.
[7] Pauls,Roller,J.of Phy.Chem.,39(1935) ,P.221.
[8] J.Halpern,Bulletin of the Inst.of Min.and Metal,№ 606,2(1957) .
[9] #12
[10] John P.Baur.Donald W.,J.of the Elec.Chem.Soc.,102,№ 8(1955) .
[11] R.W.Lane and H.J.McDonald,J.of Amer.Chem.Soc.,68-2(1946) .
[12] #12$
No related articles found!