| 中文摘要 | 第4-5页 |
| ABSTRACT | 第5-6页 |
| Chapter 1. INTRODUCTION | 第15-26页 |
| 1.1 Introduction | 第15-20页 |
| 1.1.1 Why lead is important in glass? | 第17-18页 |
| 1.1.2 Why are CRTs difficult to recycle? | 第18页 |
| 1.1.3 Composition of CRTs | 第18-20页 |
| 1.2. Significance and value of research | 第20-22页 |
| 1.2.1 Extraction of lead metal | 第20-21页 |
| 1.2.2 Use in melting flux | 第21页 |
| 1.2.3 Use in ceramics and building products | 第21页 |
| 1.2.4 Use in closed loop recycling system | 第21-22页 |
| 1.3. Research Contents | 第22-23页 |
| 1.3.1 CRTs Waste: An Overview of Global Demand for Processing | 第22-23页 |
| 1.3.2 To Evaluate the potential of material flow of waste CRTs Glassin China | 第23页 |
| 1.3.3 To develop a lead extraction method from waste CRTs funnelglass | 第23页 |
| 1.4. Structure of this dissertation | 第23-26页 |
| Chapter 2. WASTE CRTs: AN OVERVIEW OF GLOBAL CHALLENGES, AVAILABLE RECYCLING TECNOLGIES AND SOLUTIONS | 第26-64页 |
| 2.1. Introduction | 第26-27页 |
| 2.2. Literature review of CRT management | 第27-37页 |
| 2.2.1 Background | 第27-30页 |
| 2.2.2 Global status of CRT devices | 第30-32页 |
| 2.2.3 The current situation of Primary and Secondary CRT GlassMaterial | 第32-33页 |
| 2.2.4 CRT recycling | 第33-35页 |
| 2.2.5 Environmental impacts | 第35-37页 |
| 2.3. Materials and methods | 第37页 |
| 2.4. The current status of waste CRT generation | 第37-40页 |
| 2.5. Challenges for recycling waste CRTs | 第40-45页 |
| 2.5.1 Characteristics of waste CRT | 第40-42页 |
| 2.5.2 Toxic substances in waste CRTs | 第42-44页 |
| 2.5.3 Infrastructure and legislation challenges | 第44-45页 |
| 2.6. Available waste CRT recycling technologies | 第45-51页 |
| 2.6.1 CRT glass separation | 第45-47页 |
| 2.6.2 Removal of coatings from panel glass | 第47-48页 |
| 2.6.3 CRT recycling system | 第48-51页 |
| 2.7. Solutions for waste CRTs | 第51-61页 |
| 2.7.1. Extraction of lead from CRT glass | 第51-56页 |
| 2.7.2 Waste vitrification glass | 第56-57页 |
| 2.7.3 Clay bricks | 第57页 |
| 2.7.4 Smelting flux | 第57-58页 |
| 2.7.5 Crystal glass | 第58-59页 |
| 2.7.6 Ceramic glaze | 第59页 |
| 2.7.7 Concrete | 第59页 |
| 2.7.8 Foam glass | 第59-61页 |
| 2.8. Addressing Future Recycling Challenges | 第61-63页 |
| 2.9. Summary | 第63-64页 |
| Chapter 3. EVALUATING MATERIAL FLOW ANALYSIS OF WASTECATHODE RAY TUBES TELEVISION IN CHINA | 第64-76页 |
| 3.1. Introduction | 第64-65页 |
| 3.2. Material and Methods | 第65-70页 |
| 3.2.1 Stan Software | 第65-66页 |
| 3.2.2 Source of CRT TV Data | 第66页 |
| 3.2.3 Net production of CRT TVs | 第66-67页 |
| 3.2.4 Stock or in use | 第67页 |
| 3.2.5 End of life of CRT TVs | 第67-68页 |
| 3.2.6 Recycling | 第68-70页 |
| 3.2.7 Characterization of waste CRT TVs for the metal resources | 第70页 |
| 3.3. Results and discussions | 第70-74页 |
| 3.3.1 Material and substance flow of CRT TVs in China | 第70-72页 |
| 3.3.2 Estimated amount of waste CRT TVs generation | 第72页 |
| 3.3.3 End-of-life | 第72页 |
| 3.3.4 Dumping of CRT TVs | 第72-74页 |
| 3.4. Summary | 第74-76页 |
| Chapter 4. LEAD DETOXIFICATION FROM WASTE CRT FUNNEL GLASSES THROUGH MECHANO-THERMAL PROCESS BY USINGCARBON AS A REDUCING AGENT | 第76-93页 |
| 4.1. Introduction | 第76-78页 |
| 4.2. Materials and methods | 第78-82页 |
| 4.2.1 Sample preparation | 第78-79页 |
| 4.2.2 Activating process | 第79页 |
| 4.2.3 Carbon-thermal reduction treatment | 第79-80页 |
| 4.2.4 Acid leaching | 第80-81页 |
| 4.2.5 Characterization of the samples | 第81-82页 |
| 4.3. Results and discussion | 第82-91页 |
| 4.3.1 Characterization of the samples | 第82-86页 |
| 4.3.2 Characteristics of changes in the lead after reduction | 第86-89页 |
| 4.3.3 Effects of various parameters on lead removal rate | 第89-91页 |
| 4.4. Summary | 第91-93页 |
| Chapter 5. AN EFFICIENT LEAD EXTRACTION METHOD FOR WASTE CATHODE RAY TUBES THROUGH MECHANO-CHEMICAL PROCESS BYUSING NTA CHELATING REAGENT | 第93-106页 |
| 5.1. Introduction | 第93-95页 |
| 5.2. Materials and methods | 第95-98页 |
| 5.2.1 Sample preparation | 第95-96页 |
| 5.2.2 Activation and mechano-chemical treatment of the funnel glasspowder | 第96-97页 |
| 5.2.3 Recovery of metal by Ferric Sulfate | 第97页 |
| 5.2.4 Analysis | 第97-98页 |
| 5.3. Results and Discussion | 第98-105页 |
| 5.3.1 Mechano-chemical Treatment of the Lead-Glass Powder | 第98-102页 |
| 5.3.2 Recovery of silicate glass | 第102-103页 |
| 5.3.3 Recovery of lead and barium | 第103-105页 |
| 5.4. Summary | 第105-106页 |
| Chapter 6. CONCLUSION AND OUTLOOK | 第106-109页 |
| REFERENCES | 第109-124页 |
| ACKNOWLEDGEMENTS | 第124-126页 |
| CURRICULUM VITAE | 第126-127页 |
