| 摘要 | 第3-4页 |
| ABSTRACT | 第4-5页 |
| CHAPTER 1 INTRODUCTION | 第8-24页 |
| 1.1 Background and significance | 第8-9页 |
| 1.2 Treatment of silver-manganese ores | 第9-21页 |
| 1.2.1 Mechanical separation of silver from manganese-silver ores | 第9-11页 |
| 1.2.2 Separation of manganese from manganese-silver ores by chemical methods | 第11-16页 |
| 1.2.3 Silver leaching technology | 第16-21页 |
| 1.3 Scope of thesis | 第21-24页 |
| 1.3.1 Motivation | 第21-22页 |
| 1.3.2 Statement of research problem | 第22-23页 |
| 1.3.3 Hypothesis | 第23页 |
| 1.3.4 Objective | 第23-24页 |
| CHAPTER 2 EXPERIMENTAL | 第24-29页 |
| 2.1 Material | 第24-26页 |
| 2.1.1 Ores samples | 第24页 |
| 2.1.2 Manganese phase in the sample | 第24-25页 |
| 2.1.3 Size and distribution of manganese and silver in the ore | 第25-26页 |
| 2.2 Reagents | 第26页 |
| 2.3 Experiment procedure | 第26-29页 |
| 2.3.1 Magnetic separation test | 第26页 |
| 2.3.2 Manganese leaching test | 第26-27页 |
| 2.3.3 Silver leaching and recovery test | 第27-29页 |
| CHAPTER 3 UPGRADING OF MANGANESE AND SILVER BY MAGNETICSEPARATION | 第29-38页 |
| 3.1 Introduction and goal | 第29页 |
| 3.2 Description of the Slon-100 cycling pulsating HGMS and its working principle | 第29-30页 |
| 3.3 Magnetic separation test | 第30-37页 |
| 3.3.1 Size fraction magnetic separation studies | 第30-31页 |
| 3.3.2 Effect of magnetic induction | 第31-33页 |
| 3.3.3 Effect of the pulsating stroke | 第33-34页 |
| 3.3.4 Effect of grinding fineness on separation efficiency | 第34-35页 |
| 3.3.5 The influence of pulp density on the separation efficiency | 第35-36页 |
| 3.3.6 Effect of the pulsating frequency | 第36-37页 |
| 3.4 summary of the magnetic tests | 第37-38页 |
| CHAPTER 4 LEACHING OF MANGANESE FROM SILVER-MANGANESECONCENTRATE | 第38-55页 |
| 4.1 Sucrose leaching of silver-manganese concentrates | 第38-44页 |
| 4.1.1 Leaching tests principle | 第38-39页 |
| 4.1.2 Results and discussions of sucrose leaching tests | 第39-44页 |
| 4.1.3 Summary of sucrose leaching tests | 第44页 |
| 4.2 Leaching of manganese from concentrate silver-manganese ores using H_2O_2 | 第44-49页 |
| 4.2.1 Chemistry reaction of peroxide hydrogen with silver-manganese | 第44-45页 |
| 4.2.2 Result and discussion of Hydrogen peroxide leaching tests | 第45-48页 |
| 4.2.3 Summary of H_2O_2 leaching tests | 第48-49页 |
| 4.3 Leaching of silver-manganese concentrate using H_2SO_4 in presence of iron scrap | 第49-54页 |
| 4.3.1 Iron scrap leaching test chemistry | 第49页 |
| 4.3.2 Results and discussions of iron scrap leaching tests | 第49-53页 |
| 4.3.3 Summary of iron scrap leaching tests | 第53-54页 |
| 4.4 Summary of manganese hydrometallurgical leaching test | 第54-55页 |
| CHAPTER 5 EXTRACTION OF SILVER FROM SILVER-MANGANESELEACHING RESIDUE | 第55-63页 |
| 5.1 Spiral concentrator | 第55-56页 |
| 5.2 Environment-friendly Jinchan leaching agent process | 第56-61页 |
| 5.2.1 Effect of JC concentration on silver recovery | 第57-58页 |
| 5.2.2 Effect of pH on the Ag recovery | 第58-59页 |
| 5.2.3 Effect of leaching time on silver recovery | 第59-60页 |
| 5.2.4 Effect of leaching temperature on silver recovery | 第60-61页 |
| 5.2.5 Effect of liquid to solid ratio upon silver recovery | 第61页 |
| 5.3 Silver recovery | 第61-62页 |
| 5.4 Summary of silver leaching tests | 第62-63页 |
| CHAPITRE 6 CONCLUSIONS AND RECOMMENDATIONS | 第63-65页 |
| 6.1 Conclusions | 第63-64页 |
| 6.2 Recommendations | 第64-65页 |
| REFERENCES | 第65-69页 |
| ACKNOWLEDGEMENTS | 第69-70页 |
| APPENDIX | 第70页 |
