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Pyrometallurgical Process Solutions for Complex Raw Materials

机译：复杂原料的火法冶金工艺解决方案

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The smelting of concentrates and secondary materials has been subject to increasing challenges inrnrecent years due to declining grades of feed materials, increasing impurity levels and ever morernstringent environmental regulations. In addition there has been a growing focus on maximising thernefficiency of energy usage and recovery of values. New opportunities have been created with risingrnmetals prices and improved systems for the collection of secondary materials, giving rise to a need forrnmore flexible process solutions.rnThis paper focuses on a number of specific cases where a process solution has been developed usingrnthe Outotec? Ausmelt Process to meet particular feed material challenges and overcome limitationsrninherent when employing traditional pyrometallurgical processes.rnThe first case involves the development and commercial implementation of a smelting process tornrecover values from zinc smelting residues typically deposited into dams as a waste product. Thernsecond case describes the application of the Ausmelt process for the smelting and converting ofrnsecondary copper feed materials, including e-waste. These materials contain a wide range of metalsrnand plastics and need to be processed appropriately to maximise the recovery of values whilstrnavoiding environmental problems. The third case study covers the smelting of nickel concentratesrncontaining elevated magnesia levels as well as nickel bearing catalysts with high alumina content,rnneither of which can be readily processed when employing traditional pyrometallurgical technologies.
机译：由于饲料原料等级的下降，杂质水平的提高以及严格的环境法规，最近几年精矿和辅助材料的冶炼面临越来越多的挑战。另外，人们越来越关注最大化能源使用效率和价值回收。随着金属价格的上涨和用于二次材料收集的系统的改进，已经创造了新的机会，因此需要更加灵活的过程解决方案。本文重点讨论了使用Outotec？开发过程解决方案的许多特定情况。 Ausmelt工艺可满足特定原料的挑战并克服传统火法冶金工艺固有的局限性。第一种情况涉及冶炼工艺的开发和商业实施，以从通常作为废物沉积到大坝中的锌冶炼残渣中回收价值。第二种情况描述了Ausmelt工艺在第二种铜原料（包括电子废物）的冶炼和转化中的应用。这些材料包含多种金属和塑料，需要适当处理以最大程度地回收价值，同时避免环境问题。第三个案例研究涉及熔炼含镁含量较高的镍精矿以及具有高氧化铝含量的含镍催化剂，而采用传统的火法冶金技术都不能轻易地加工它们。

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