声明
CHAPTER 1 INTRODUCTION
1 .2 Treatment of silver-manganese ores
1 .2. 1 Mechanical separation of silver from manganese-silver ores
1.2.2 Separation of manganese from manganese-silver ores by chemical methods
1.2.3 Silver leaching technolog
1.3 Scope of thesis
1 .3 .2 Statement of research problem
1 .3.3 Hypothesis
CHAPTER2 EXPERIMENTAL
2.1.3 Size and distribution of manganese and silver in the ore
2.2 Reagents
2.3.3 Silver leaching and recovery test
CHAPTER 3 UPGRADING OF MANGANESE AND SILVER BY MAGNETIC SEPARATION
3.3 Magnetic separation test
3.3.2 Effect of magnetic induction
3.3 .3 Effect of the pulsating stroke
3.3.4 Effect of grinding fineness on separation efficiency
3.3.5 The influence of pulp density on the separation efficiency
3.3.6 Effect of the pulsating frequency
3.4 summary of the magnetic tests
CHAPTER 4 LEACHING OF MANGANESE FROM SILVER-MANGANESE CONCENTRATE
4.1.2 Results and discussions of sucrose leaching tests
4.1.3 Summary of sucrose leaching tests
4.2.2 Result and discussion of Hydrogen peroxide leaching tests
4.2.3 Summary of H2O2 leaching tests
4.3 Leaching of silver-manganese concentrate using H2SO4 in presence of iron scrap
4.3.2 Results and discussions of iron scrap leaching tests
4.3.3 Summary of iron scrap leaching tests
4.4 Summary of manganese hydrometallurgical leaching test
CHAPTER 5 EXTRACTION OF SILVER FROM SILVER-MANGANESE LEACHING RESIDUE
5.2 Environment-friendly Jinchan leaching agent process
5.2.1 Effect of JC concentration on silver recovery
5.2.2 Effect of pH on the Ag recovery
5.2.3 Effect of leaching time on silver recovery
5.2.4 Effect of leaching temperature on silver recovery
5.2.5 Effect of liquid to solid ratio upon silver recovery
5.4 Summary of silver leaching tests
CHAPTER 6 CONCLUSIONS AND RECOMMENDATIONS
6.2 Recommendations
参考文献
致谢
APPENDIX
湘潭大学;
