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| Status and prospect of combined smelting technologyfor PCB and copper scrap |
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Received:November 19, 2021
Revised:November 19, 2021
Published Online:July 04, 2022
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| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:PCB, Copper;concentrate, Copper;scrap, Combined;smelting technology |
| Author | Institution |
| WANG Haibei |
BGRIMM |
| ZHANG Xiaobing |
BGRIMM |
| XIE Keng |
BGRIMM |
| YANG Biwen |
BGRIMM |
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| Abstract: |
| Copper production in China is 10 million tons in 2020, in which primary smelter production is 7.23 million tons and secondary production is 2.80 million tons, account for 37.40% of the whole world copper production. With the rapid development of national economy and improvement of people’s living condition copper scrap and other WEEE wastes increased with speed of 5-10% and have became one of the most important raw materials. Copper scraps with high grade usually use FRHC, blasting furnace, vertical furnace and reverberatory processes to produce copper cathode or copper rod. But most of processes have the disadvantages of high energy consumption, heavy pollution and low qualified products. There are several main technologies to treat PCB, such as mechanical and separator process, hydrometallurgy, burning with high temperature and smelting processes. The main disadvantages of status technologies are non-complete separating, low metals recovery and heavy pollution. On experiences of Europe and USA in this field the primary smelters should be changed into treating secondary materials gradually. The combined smelting can not only eliminate excess capacity, but also can reduce duplicated construction and environmental pollution. Consequently, the combined smelting with copper concentrate/copper scrap/PCB is one of the most important prospect field in the future. |
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