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| Application Study on Technology of Reducing Copper Content in Discarded Slag |
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Received:October 25, 2017
Revised:October 30, 2017
Accepted:October 31, 2017
Published Online:March 20, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.04.003 |
| KeyWord:Dilution Furnace; flux; vulcanizing agent; reductant; copper in discarded slag |
| Author | Institution |
| BIAN Rui-min |
东营方圆有色金属有限公司 山东.东营 |
| WANG Zhi |
东营方圆有色金属有限公司 |
| WEI Chuan-bin |
东营方圆有色金属有限公司 |
| ZHAO Bao-jun |
东营方圆有色金属有限公司 |
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| Abstract: |
| Effects of flux, vulcanizing agent and reductant on slag dilution in new-type Dilution Furnace were investigated under the conditions including smelting temperature of 1 200 ℃ and 1 250 ℃, settling time of 30 min and 60 min, and Fe/SiO2=1.7~1.9. The results show that addition of SiO2, B2O3 or CaF2 into original copper smelting slag can improve settling separation effect. Though no effect on copper recovery, addition of FeS can provide heat required by reaction with oxygen and reduce copper dissolution in spinel phase and slag. Copper content in discarded slag can be controlled at 0.26% under the optimum comprehensive conditions with ratio of oxygen to natural gas of 1.6. |
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