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Fabrication of Casting Pig Iron from Copper Smelting Slag by Carbothermic Reduction (탄소열환원 반응에 의한 동제련슬래그로부터 주철용 선철 제조 연구)

  • Choi, Moo-Sung;Choi, Dong-Hyeon;Wang, Jei-Pil
    • Resources Recycling
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    • v.28 no.3
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    • pp.59-67
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    • 2019

  • This study was conducted to fabrication pig iron containing copper and to reduce sulfur content pig iron. Roasting test was conducted for 1 ~ 9 hours at each temperature of $500^{\circ}C$, $700^{\circ}C$, and $900^{\circ}C$. In addition, the effect of oxygen partial pressure with 0.5, 0.8, and 1 atm was carried out for 30 minutes at $900^{\circ}C$. It was found that there is no effect to reduce sulfure in pig iron through roasting and oxygen partial pressures. The addition of CaO with 15 wt.% was found to reduce sulfur content up to 0.001 wt.%. The suitable temperature and reactive time for carbothermic reduction were $1600^{\circ}C$ and 30 minutes which shows the highest recovery rate of iron from the copper slag.

  • https://doi.org/10.7844/kirr.2019.28.3.59 인용 PDF KSCI HTML