Abstract
Effects of flux , vulcanizing agent and reductant on slag cleaning in new-type slag cleaning furnace (Φ3.6 × 8.1 m) were investigated under the conditions including smelting temperature of 1200 and 1250 °C, settling time of 30 and 60 min, and Fe/SiO2 of 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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Cui, Zx., Wang, Z., Bian, Rm., Wei, Cb., Zhao, Bj. (2018). Application Study on Technology of Reducing Copper Content in Discarded Slag. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_38
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DOI: https://doi.org/10.1007/978-3-319-95022-8_38
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