SIPS 2016 Volume 8: Non-ferrous, Rotary Kiln, Ferro-alloys, Rare Earth, Coal

Editors: | Kongoli F, Xueyi G, Shumskiy V, Kozlov P, Capiglia C, Silva AC, Turna T |

Publisher: | Flogen Star OUTREACH |

Publication Year: | 2016 |

Pages: | 350 pages |

ISBN: | 978-1-987820-50-8 |

ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |

Based on the principle of Gibbs energy minimization, a multiphase equilibrium model for estimating the substance flowing in the process of oxygen bottom blowing copper smelting (SKS) is proposed in this paper. The mechanical entrainment and complex behavior of S2 in the SKS process are both quantitatively depicted using mathematical models. An improved particle swarm optimization (HLPSO) algorithm that suits for the highly dimensional and linear constraints optimization problem is devised to calculate the substance contents and element distributions in detail when the system is close to equilibrium. A set of industrial data is compared with the predicted data. It is found that the matte grade may reach 71.075% under the condition of oxygen blowing speed at 10885 Nm3/h, air blowing speed at 5651 Nm3/h and mixed copper concentrates input speed at 66 t/h. The tri-phase (matte, slag and gas phase) distribution coefficients of arsenic are 0.061, 0.112, 0.827, of antimony are 0.128, 0.706, 0.166, of bismuth are 0.198, 0.113, 0.689, of lead are 0.556, 0.248, 0.197 and of zinc are 0.178, 0.643, 0.179. The results are overall in good accordance with the actual plant production data and the model can be used for prediction in different conditions.

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