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首页> 外文会议>International Conference on Copper 2003-Cobre 2003 v.4 book 1; 20031130-20031203; Santiago; CL >Removal technologies for minor elements in copper smelting
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Removal technologies for minor elements in copper smelting

机译：铜冶炼中微量元素的去除技术

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摘要

Minor element removal strategies for copper smelting include (ⅰ) operations control: whereby feeds, by-products and recycles are controlled such that acceptable qualities of product copper can be obtained and (ⅱ) process add-ons: whereby unit operations that target the elimination of specific problematic minor elements from copper smelting circuits are employed. Historically, creative and talented smelter operators have been able to cope using the former methods. However, the increasing prevalence of complex concentrates and secondary materials treatment would increase minor element loads to unsustainable levels without the use of the latter type of operations. Here, the magnitude of the situation is described and an analysis of the various proven options to control and/or lower the levels of minor elements is presented. Copper blow with calcium oxide slag, concentrate injection in Peirce-Smith converters, fluxing in the anode furnace are industrial practices described in this paper. Also, the potential of methods yet to be commercially proven, such as vacuum refining and halide refining, is discussed. The data and analysis below provide a sound basis for evaluating the various options with respect to their technical feasibility and offer sufficient ideas to progress on a study of viability of a given minor element scenario.
机译：铜冶炼的次要元素去除策略包括（ⅰ）操作控制：据此控制进料，副产品和回收利用，以便获得可接受质量的产品铜；以及（ⅱ）附加工艺：由此针对消除的单位操作使用了来自铜熔炼电路的特定有问题的次要元素。从历史上看，富有创造力和才华的冶炼厂经营者已经能够使用以前的方法来应对。但是，如果不使用后一种类型的操作，复杂精矿和辅助材料处理方法的普及将使次要元素负荷增加到不可持续的水平。在此，描述了情况的严重性，并分析了控制和/或降低次要元素含量的各种可靠方法。本文介绍了用氧化钙渣吹铜，在Peirce-Smith转炉中注入精矿，在阳极炉中进行助熔剂等工业实践。另外，还讨论了尚未被商业证明的方法的潜力，例如真空精制和卤化物精制。下面的数据和分析为评估各种选项的技术可行性提供了良好的基础，并提供了足够的思路来研究给定次要元素方案的可行性。

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