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| Collaborative Treatment of Copper-containing Sludge Based on Top Blowing Bath Smelting Process |
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Received:November 28, 2022
Revised:January 13, 2023
Accepted:January 16, 2023
Published Online:March 17, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.04.003 |
| KeyWord:copper-containing sludge; top-blown bath smelting; resource utilization; harmless disposal |
| Author | Institution |
| CHEN Shi-chao |
中节能工程技术研究院有限公司 |
| DING Yin-gui |
中节能工程技术研究院有限公司 |
| ZHANG Xin |
中节能工程技术研究院有限公司 |
| GUAN Zi-hao |
中节能工程技术研究院有限公司 |
| LIU Jie |
中节能工程技术研究院有限公司 |
| ZHU Cai-fei |
中节能工程技术研究院有限公司 |
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| Abstract: |
| Copper-containing sludge has the dual attributes of environmental hazards and resource recovery. As an advanced pyrometallurgical process, the top-blown bath smelting process has the characteristics of clean and high efficient, and has great potential in the treatment of copper-containing sludge. The technical status of harmless and resource-based technology of copper-containing sludge was analyzed. The resource utilization technology of copper containing hazardous waste based on top blowing bath smelting was described. The production efficiency of this process is high, and the bed capacity is up to 30 t/(m2?d). The recovery rate of copper is 98%, and the precious metal recovery is 95%. After high temperature smelting, copper and other valuable metals were recovered in blister copper. The molten slag is quenched to obtain glassy slag. After the process of "secondary combustion + waste heat recovery + SNCR denitrification + quench tower + lime-activated carbon injection + cloth bag dust removal + wet desulphurization + electric demisting", the flue gas is discharged to reach the standard. The heavy metals, persistent organic pollutants, SO2, NOx, halide and other pollutants in copper containing hazardous wastes are completely eliminated. |
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