Aluminum Recycling (Google eBook)

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CRC Press, Nov 1, 2006 - Technology & Engineering - 248 pages
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Even though over 30% of the aluminum produced worldwide now comes from secondary sources (recycled material), there are few books that cover the recycling process from beginning to end. Meeting the need for a comprehensive treatment of the aluminum recycling process, Aluminum Recycling explores the technology and processing strategies required to convert scrap aluminum and its alloys into new aluminum products and mixtures.

The book details the collecting, sorting, and separating of scrap aluminum as well as the processing and upgrading equipment used. It first describes the aluminum alloys that are contained in the ore body and the various "mines" where aluminum scrap is found, followed by a discussion of the procedures for separating scrap aluminum from other materials. Subsequent chapters review the furnaces used for remelting the recovered scrap and the refining techniques that improve its purity and quality. The book also discusses the economics of scrap recycling and outlines the structure of the recycling industry. The final chapter addresses the unique environmental and safety challenges that recycling operations face.

Although the benefits of recycling are numerous, aluminum recycling presents a series of unique challenges. Aluminum Recycling expertly leads you through the sequences of scrap aluminum recycling to provide a solid foundation for overcoming these obstacles.
  

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Contents

Introduction
1
A BRIEF HISTORY OF ALUMINUM RECYCLING
2
ADVANTAGES AND CHALLENGES OF RECYCLING
4
RECOMMENDED READING
8
The Ore Body
9
THE CAST ALUMINUM ALLOY SYSTEM
14
THE PRODUCT MIX
18
RECOMMENDED READING
23
RECUPERATORS
127
REFRACTORIES
128
STIRRING
129
ENVIRONMENTAL EQUIPMENT
133
RECOMMENDED READING
135
FossilFuel Furnaces
137
MULTIPLECHAMBER FURNACES
141
SMALLVOLUME MELTERS
145

Scrap Collection
25
SCRAP COLLECTION PRACTICE
29
OLD SCRAP
30
Transportation
31
Building
32
Wire and Cable
37
Aluminum Recycling Economics
41
PRODUCTION OF PRIMARY ALUMINUM
42
USES
43
RECYCLING OF USED ALUMINUM BEVERAGE CANS
45
AN ECONOMIC PERSPECTIVE
48
CONCLUSION
51
RECOMMENDED READING
53
Beneficiation Technology
55
SEPARATION
62
AIR CLASSIFICATION
63
MAGNETIC SEPARATION
65
EDDYCURRENT SORTING
67
HEAVYMEDIA SEPARATION HMS
71
THE ALLOY SEPARATION PROBLEM
75
THERMAL PROCESSING
78
PYROLYSIS OF COMPOSITE PACKAGING
85
PARTIAL MELTING
86
AGGLOMERATION
87
BRIQUETTING
88
RECOMMENDED READING
89
REFERENCES
90
Beneficiation Practice
93
MUNICIPAL SOLID WASTE
100
UBCs AND OTHER PACKAGING
102
AUTOMOTIVE SCRAP
105
ELECTRICAL AND ELECTRONIC SCRAP
107
RECOMMENDED READING
111
Melting Furnace Fundamentals
113
COMBUSTION
115
THE CHEMISTRY OF FLUXING
117
REFRACTORY INTERACTIONS
118
RECOMMENDED READING
120
Melting Furnace Parts and Accessories
123
REGENERATION
125
FLAME MANIPULATION
126
HOLDING AND DOSING FURNACES
146
RECOMMENDED READING
147
Electric Furnace Melting
151
INDUCTION FURNACES
152
CHANNEL FURNACES
158
RESISTANCE FURNACES
160
RECOMMENDED READING
161
The Recycling Industry
163
INFLUENCES ON THE ALUMINUM RECYCLING INDUSTRY
165
THE IMPACT OF DEMAND
166
THE IMPACT OF COST
167
THE IMPACT OF TECHNOLOGY
168
REFERENCES
169
Metal Refining and Purification
171
REACTIVE METALS
173
INCLUSIONS
174
THE FOURTH CLASS OF IMPURITIES
176
REACTIVE METALS
177
INCLUSIONS
179
REFINING STRATEGY
181
MELTING FURNACE
182
CASTING FURNACE
183
FILTRATION
185
RECOMMENDED READING
190
Dross Processing
193
PROCESSING OPTIONS FOR DROSS
194
DROSSCOOLING OPTIONS
197
COMMINUTION
199
THE ROTARY SALT FURNACE
200
SALTFREE PROCESSES
201
SALTCAKE AND SALT DROSS PROCESSING
204
RECOMMENDED READING
205
Safety and Environmental Considerations
209
THERMAL PROCESSING AND MELTING
211
RESPONSES TO HAZARDS
213
CHARGING AND MELTING
214
RECOMMENDED READING
216
REFERENCES
217
Index
219
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