废显示器管理及从锥玻璃中回收铅的技术研究
发布时间：2022-08-12 09:15
阴极射线管（CRT）是全球范围内的一种主要电子废物。尽管我们现在已不能从商店里购买到此类产品,但在发达国家中废CRT的数量还未达到峰值,并且在随后的几年里发展中国家也会迎来这一报废高峰。另一方面,随着像液晶显示（LCD）和等离子体显示等新技术的出现,对CRT中所含铅玻璃的需求也将消失。近几年,电子废物回收项目收集到的废CRT数量在持续增长,全球有大量的报废电视机和电脑显示器进入废物流。本研究旨在确定中国CRT电视机的流向,分析特定金属的的物质流,以形成废物和资源管理策略。本文评价了十年内投入中国市场的CRT电视机,这些产品一经报废,将产生18.36万吨玻璃,171.82万吨塑料,24.3万吨钢铁,15.35万吨铅,7.66万吨铜,7千8百吨铝,和1千6百吨镍。目前,中国消费者几乎不再有购买此类产品的需求,鉴于该产品的使用寿命为10年,近几年报废CRT电视机的产生量将会非常可观。为了最大程度降低报废电视机和电脑显示器中有害物质的危害,回收有价材料,本文开发了两种处理报废电脑显示器的方法,可实现有价材料和有害物质的手动分拣和回收。本文研究的第一种处理技术是通过机械活化和热还原,增强酸浸过程...
【文章页数】：127 页
【学位级别】：博士
【文章目录】：
中文摘要
ABSTRACT
Chapter 1. INTRODUCTION
1.1 Introduction
1.1.1 Why lead is important in glass?
1.1.2 Why are CRTs difficult to recycle?
1.1.3 Composition of CRTs
1.2. Significance and value of research
1.2.1 Extraction of lead metal
1.2.2 Use in melting flux
1.2.3 Use in ceramics and building products
1.2.4 Use in closed loop recycling system
1.3. Research Contents
1.3.1 CRTs Waste: An Overview of Global Demand for Processing
1.3.2 To Evaluate the potential of material flow of waste CRTs Glassin China
1.3.3 To develop a lead extraction method from waste CRTs funnelglass
1.4. Structure of this dissertation
Chapter 2. WASTE CRTs: AN OVERVIEW OF GLOBAL CHALLENGES, AVAILABLE RECYCLING TECNOLGIES AND SOLUTIONS
2.1. Introduction
2.2. Literature review of CRT management
2.2.1 Background
2.2.2 Global status of CRT devices
2.2.3 The current situation of Primary and Secondary CRT GlassMaterial
2.2.4 CRT recycling
2.2.5 Environmental impacts
2.3. Materials and methods
2.4. The current status of waste CRT generation
2.5. Challenges for recycling waste CRTs
2.5.1 Characteristics of waste CRT
2.5.2 Toxic substances in waste CRTs
2.5.3 Infrastructure and legislation challenges
2.6. Available waste CRT recycling technologies
2.6.1 CRT glass separation
2.6.2 Removal of coatings from panel glass
2.6.3 CRT recycling system
2.7. Solutions for waste CRTs
2.7.1. Extraction of lead from CRT glass
2.7.2 Waste vitrification glass
2.7.3 Clay bricks
2.7.4 Smelting flux
2.7.5 Crystal glass
2.7.6 Ceramic glaze
2.7.7 Concrete
2.7.8 Foam glass
2.8. Addressing Future Recycling Challenges
2.9. Summary
Chapter 3. EVALUATING MATERIAL FLOW ANALYSIS OF WASTECATHODE RAY TUBES TELEVISION IN CHINA
3.1. Introduction
3.2. Material and Methods
3.2.1 Stan Software
3.2.2 Source of CRT TV Data
3.2.3 Net production of CRT TVs
3.2.4 Stock or in use
3.2.5 End of life of CRT TVs
3.2.6 Recycling
3.2.7 Characterization of waste CRT TVs for the metal resources
3.3. Results and discussions
3.3.1 Material and substance flow of CRT TVs in China
3.3.2 Estimated amount of waste CRT TVs generation
3.3.3 End-of-life
3.3.4 Dumping of CRT TVs
3.4. Summary
Chapter 4. LEAD DETOXIFICATION FROM WASTE CRT FUNNEL GLASSES THROUGH MECHANO-THERMAL PROCESS BY USINGCARBON AS A REDUCING AGENT
4.1. Introduction
4.2. Materials and methods
4.2.1 Sample preparation
4.2.2 Activating process
4.2.3 Carbon-thermal reduction treatment
4.2.4 Acid leaching
4.2.5 Characterization of the samples
4.3. Results and discussion
4.3.1 Characterization of the samples
4.3.2 Characteristics of changes in the lead after reduction
4.3.3 Effects of various parameters on lead removal rate
4.4. Summary
Chapter 5. AN EFFICIENT LEAD EXTRACTION METHOD FOR WASTE CATHODE RAY TUBES THROUGH MECHANO-CHEMICAL PROCESS BYUSING NTA CHELATING REAGENT
5.1. Introduction
5.2. Materials and methods
5.2.1 Sample preparation
5.2.2 Activation and mechano-chemical treatment of the funnel glasspowder
5.2.3 Recovery of metal by Ferric Sulfate
5.2.4 Analysis
5.3. Results and Discussion
5.3.1 Mechano-chemical Treatment of the Lead-Glass Powder
5.3.2 Recovery of silicate glass
5.3.3 Recovery of lead and barium
5.4. Summary
Chapter 6. CONCLUSION AND OUTLOOK
REFERENCES
ACKNOWLEDGEMENTS
CURRICULUM VITAE
【参考文献】：
期刊论文
[1]Recovery of waste rare earth fluorescent powders by two steps acid leaching[J]. Shen-Gen Zhang,Min Yang,Hu Liu,De-An Pan,Jian-Jun Tian. Rare Metals. 2013(06)
[2]废阴极射线管（CRT）玻璃资源化技术的研究进展[J]. 石翔,李光明,胥清波,贺文智,梁宏根. 材料导报. 2011(11)
[3]我国铅物质流分析研究[J]. 郭学益,钟菊芽,宋瑜,田庆华. 北京工业大学学报. 2009(11)
本文编号：3675611
【文章页数】：127 页
【学位级别】：博士
【文章目录】：
中文摘要
ABSTRACT
Chapter 1. INTRODUCTION
1.1 Introduction
1.1.1 Why lead is important in glass?
1.1.2 Why are CRTs difficult to recycle?
1.1.3 Composition of CRTs
1.2. Significance and value of research
1.2.1 Extraction of lead metal
1.2.2 Use in melting flux
1.2.3 Use in ceramics and building products
1.2.4 Use in closed loop recycling system
1.3. Research Contents
1.3.1 CRTs Waste: An Overview of Global Demand for Processing
1.3.2 To Evaluate the potential of material flow of waste CRTs Glassin China
1.3.3 To develop a lead extraction method from waste CRTs funnelglass
1.4. Structure of this dissertation
Chapter 2. WASTE CRTs: AN OVERVIEW OF GLOBAL CHALLENGES, AVAILABLE RECYCLING TECNOLGIES AND SOLUTIONS
2.1. Introduction
2.2. Literature review of CRT management
2.2.1 Background
2.2.2 Global status of CRT devices
2.2.3 The current situation of Primary and Secondary CRT GlassMaterial
2.2.4 CRT recycling
2.2.5 Environmental impacts
2.3. Materials and methods
2.4. The current status of waste CRT generation
2.5. Challenges for recycling waste CRTs
2.5.1 Characteristics of waste CRT
2.5.2 Toxic substances in waste CRTs
2.5.3 Infrastructure and legislation challenges
2.6. Available waste CRT recycling technologies
2.6.1 CRT glass separation
2.6.2 Removal of coatings from panel glass
2.6.3 CRT recycling system
2.7. Solutions for waste CRTs
2.7.1. Extraction of lead from CRT glass
2.7.2 Waste vitrification glass
2.7.3 Clay bricks
2.7.4 Smelting flux
2.7.5 Crystal glass
2.7.6 Ceramic glaze
2.7.7 Concrete
2.7.8 Foam glass
2.8. Addressing Future Recycling Challenges
2.9. Summary
Chapter 3. EVALUATING MATERIAL FLOW ANALYSIS OF WASTECATHODE RAY TUBES TELEVISION IN CHINA
3.1. Introduction
3.2. Material and Methods
3.2.1 Stan Software
3.2.2 Source of CRT TV Data
3.2.3 Net production of CRT TVs
3.2.4 Stock or in use
3.2.5 End of life of CRT TVs
3.2.6 Recycling
3.2.7 Characterization of waste CRT TVs for the metal resources
3.3. Results and discussions
3.3.1 Material and substance flow of CRT TVs in China
3.3.2 Estimated amount of waste CRT TVs generation
3.3.3 End-of-life
3.3.4 Dumping of CRT TVs
3.4. Summary
Chapter 4. LEAD DETOXIFICATION FROM WASTE CRT FUNNEL GLASSES THROUGH MECHANO-THERMAL PROCESS BY USINGCARBON AS A REDUCING AGENT
4.1. Introduction
4.2. Materials and methods
4.2.1 Sample preparation
4.2.2 Activating process
4.2.3 Carbon-thermal reduction treatment
4.2.4 Acid leaching
4.2.5 Characterization of the samples
4.3. Results and discussion
4.3.1 Characterization of the samples
4.3.2 Characteristics of changes in the lead after reduction
4.3.3 Effects of various parameters on lead removal rate
4.4. Summary
Chapter 5. AN EFFICIENT LEAD EXTRACTION METHOD FOR WASTE CATHODE RAY TUBES THROUGH MECHANO-CHEMICAL PROCESS BYUSING NTA CHELATING REAGENT
5.1. Introduction
5.2. Materials and methods
5.2.1 Sample preparation
5.2.2 Activation and mechano-chemical treatment of the funnel glasspowder
5.2.3 Recovery of metal by Ferric Sulfate
5.2.4 Analysis
5.3. Results and Discussion
5.3.1 Mechano-chemical Treatment of the Lead-Glass Powder
5.3.2 Recovery of silicate glass
5.3.3 Recovery of lead and barium
5.4. Summary
Chapter 6. CONCLUSION AND OUTLOOK
REFERENCES
ACKNOWLEDGEMENTS
CURRICULUM VITAE
【参考文献】：
期刊论文
[1]Recovery of waste rare earth fluorescent powders by two steps acid leaching[J]. Shen-Gen Zhang,Min Yang,Hu Liu,De-An Pan,Jian-Jun Tian. Rare Metals. 2013(06)
[2]废阴极射线管（CRT）玻璃资源化技术的研究进展[J]. 石翔,李光明,胥清波,贺文智,梁宏根. 材料导报. 2011(11)
[3]我国铅物质流分析研究[J]. 郭学益,钟菊芽,宋瑜,田庆华. 北京工业大学学报. 2009(11)
本文编号：3675611
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