| Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences | Host |
| Citation: |
Zuo Zongliang, Luo Siyi, Yu Qingbo, Zhang Jingkui. Orthogonal Experiments of Copper Slag Particles Direct Reduction by Carbon-Containing Solid Waste Reductant[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 46-50. doi: 10.3969/j.issn.1000-6532.2022.05.009
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Orthogonal Experiments of Copper Slag Particles Direct Reduction by Carbon-Containing Solid Waste Reductant
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Abstract
Copper slag particles were prepared by rotary cup atomizer. Carbon-containing copper slag pellets were prepared by copper slag particles, carbon reductant, binder and slag former. The effects of six factors on reduction ratio of carbon-containing copper slag pellets were in accordance with the sequence of reaction temperature > the ratio of slag former > atmosphere > the types of reduction reductant > particle size of copper slag > the addition ratio of reductant, under experiment conditions. The optimum condition for direct reduction of carbon-containing copper slag pellets was that the reaction temperature was 1150℃, the ratio of slag former was 1∶0.4, atmosphere was CO2(50%)+N2(50%), the reductant was coal, particle size of copper slag was +0.425 mm and the addition ratio of reductant was 1.2∶1. On this condition, the reduction ratio of copper slag is 98.2%.
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Keywords:
- Copper slag /
- Centrifugation /
- Direct reduction
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References
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Zuo Zongliang, Luo Siyi, Yu Qingbo, Zhang Jingkui. Orthogonal Experiments of Copper Slag Particles Direct Reduction by Carbon-Containing Solid Waste Reductant[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(5): 46-50. doi: 10.3969/j.issn.1000-6532.2022.05.009
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Figure 1.
XRD pattern of copper slag
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Figure 2.
Cooled copper slag particles
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Figure 3.
Effect of binder ratio on compressive strength of pellets (pulverized coal)