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| Pilot-scale Test for Recovering Valuable Metals from WEEEs by Oxygen-enriched Side-Blown Smelting |
| Received:May 27, 2020 Revised:May 30, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2020.09.008 |
| KeyWord:WEEEs; oxygen-enriched side-blown smelting; CaO-SiO2-Al2O3 slag system; Cu; recovery |
| Author | Institution |
| Ren Guo-xing |
长沙矿冶研究院有限责任公司;中南大学 |
| Zhang Xiao-lin |
湖南水口山有色金属集团有限公司 |
| Pan Bing |
长沙矿冶研究院有限责任公司 |
| Bai Cheng-qing |
湖南水口山有色金属集团有限公司 |
| He cong-xing |
湖南水口山有色金属集团有限公司 |
| Xiao Song-wen |
长沙矿冶研究院有限责任公司 |
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| Abstract: |
| A pilot test was carried out to recover valuable metals from WEEEs in an oxygen-enriched side-blown smelting furnace with total bed area of 3.6 m2. Content of Cu, Au and Ag in slag is 0.11%, 0.20 g/t and 1.00 g/t respectively with recovery rate of Cu, Au and Ag of 98.43%, 97.58% and 99.27%, respectively under the conditions including feed rate of solid of 1.04-2.30 t/h, concentration of oxygen gas in smelting zone of 65.80%-66.11%, and concentration of oxygen gas in fuming zone of 31.96%-36.32%. CaO-SiO2-Al2O3 slag system containing some FeO for smelting process is appropriate under the conditions of CaO/SiO2=0.33-0.41, Fe/SiO2=0.07-0.14, and Al2O3 content of 11.33%-12.77%. The test results demonstrate that WEEEs can be processed effectively by oxygen-enriched side-blown smelting technology. |
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