CHAPTER 5. Iron alloy production and raw material requirement. Recycling of scrap and metal waste in different smelters 111 5.1. Production of iron alloys from scrap and waste………………….
111
5.2. Iron waste requirement, sources of scrap and iron waste and
characteristics of processing units……………………………………..
118
5.3. Processing of secondary scrap and cast iron wastes in a varnish
furnace…………………………………………………………………..
121
5.4. Melting scrap and steel and iron waste in electric furnaces………
128
5.5. Recycling of steel waste and production of secondary steel…….
133
5.6. Extraction of tin from iron scrap and zinc from dust………………
137
CHAPTER 6. Recycling of scrap and non-ferrous metal wastes 144 6.1. Characterization and classification of scrap and waste aluminium and
copper……………………………………………………………….
144
6.1.2. Preparation for recycling of scrap and aluminium waste and use of
furnaces for remeltingaluminium waste…………………………….
150
6.1.3. Recycling of scrap and aluminium waste in reflection and electric
furnaces………………………………………………………………….
154
6.2. Main stages of processing of copper scrap and waste……………
161
6.2.1. Melting of scrap and copper waste in mine furnaces…………..
165
6.2.2. Conversion and refining of blister copper obtained during waste
treatment…………………………………………………………………
168
6.2.3. Dissolution of scrap and copper waste in sulfuric acid and ammonia
solution……………………………………………………….
174
6.2.4. Electrochemical dissolution of scrap and copper waste………..
177
6.3. Recycling of scrap and lead waste in reflection and electric furnaces
182
6.4. Recycling of nickel and cobalt scrap and waste…………………
185
6.5. Characterization and classification of scrap and waste based on gold,
silver and platinum……………………………………………….
190
6.5.1. Processing of raw material wastes containing precious metals…
193
6.5.2. Determination of the amount of valuable metals in the raw material