LEACHING OF CU2O WITH AQUEOUS-SOLUTION OF SULFUR-DIOXIDE

被引：12
作者：
YOUZBASHI, AA
DIXIT, SG
机构：
[1] Department of Chemical Technology, University of Bombay, Bombay
来源：
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY | 1993年 / 24卷 / 04期
关键词：
D O I：
10.1007/BF02673171
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Leaching of Cu2O with aqueous SO2 solution is significant, since during the dissolution process, precipitation of copper as Chevreul's salt also takes place under appropriate conditions. The dissolution is controlled by surface reactions and proceeds through both aqueous SO2 and acid dissolution paths. An overall rate equation based on the above premise has been found to agree well with the experimental data. At pH values higher than 1.8, precipitation of copper as Chevreul's salt takes place after about 10 minutes of leaching. The extent of the precipitation depends upon the pH, SO2 concentration, initial Cu2+ concentration, and sulfate concentration in the leaching solution.
引用
收藏
页码：563 / 570
页数：8
相关论文
共 19 条
[1]  
ARBITER N, 1975, I CHEM ENG S SER, V42, P1
[2]  
BOWER PC, 1974, Patent No. 2197070
[3]  
BRAUL GB, 1983, HYDROMETALLURGY, V9, P307
[4]   METAL-ION SULFUR(IV) CHEMISTRY .1. STRUCTURE AND THERMODYNAMICS OF TRANSIENT COPPER(II)-SULFUR(IV) COMPLEXES [J].
CONKLIN, MH ;
HOFFMANN, MR .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1988, 22 (08) :883-891
[5]  
HORI S, 1971, Patent No. 3573896
[6]   SELECTIVE EXTRACTION OF METALS FROM PACIFIC SEA NODULES WITH DISSOLVED SULFUR-DIOXIDE [J].
KHALAFALLA, SE ;
PAHLMAN, JE .
JOURNAL OF METALS, 1981, 33 (08) :37-42
[7]  
LINKSON PB, 1983, PRECIPITATION METAL, P312
[8]  
LINKSON PB, 1981, 9TH P AUSTR CHEM ENG, P107
[9]   KINETIC-STUDY OF THE DISSOLUTION OF CUPRITE IN OXYACID SOLUTIONS [J].
MAJIMA, H ;
AWAKURA, Y ;
ENAMI, K ;
UESHIMA, H ;
HIRATO, T .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1989, 20 (05) :573-580
[10]   REACTION-KINETICS FOR THE LEACHING OF MNO2 BY SULFUR-DIOXIDE [J].
MILLER, JD ;
WAN, RY .
HYDROMETALLURGY, 1983, 10 (02) :219-242
12