Metallurgical and Materials Transactions B ( IF 2.4 ) Pub Date : 2021-08-10 , DOI: 10.1007/s11663-021-02283-7 Pekka Taskinen 1 , Ari Jokilaakso 1
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Abstract
Flash smelting and flash converting are mature technologies in copper and nickel sulfide smelting. The sensitivity of operation concerning the furnace design is evident. It is obvious that when two unit operations are carried out in separate spaces in the same furnace, skills related to maintenance of suspension oxidation of fine minerals, fluxing, fluid as well as heat flows and the overall energy balance are required. Despite these fundamental features, the flow-sheet wide understanding of linking the suspension oxidation of sulfides with the subsequent smelting processes in the furnace as well as the chemistry of its off-gas train is largely absent in the scientific literature. This review gives a detailed outlook on the microscale phenomena in flash smelting and flash converting furnaces accumulated during the last decades. It connects their vital features and chemistries with the reaction tendencies and heat fluxes in the different parts and reaction zones of the furnace as well as in the off-gas train from the smelter to the acid plant.
Graphic Abstract
中文翻译：
闪速熔炼和转化炉中的反应序列：深入了解
摘要
闪速熔炼和闪速转化是硫化铜和硫化镍冶炼的成熟技术。炉子设计的操作敏感性是显而易见的。很明显，当两个单元操作在同一炉子的不同空间中进行时，需要与维持细矿物悬浮氧化、助熔剂、流体以及热流和整体能量平衡相关的技能。尽管有这些基本特征，但科学文献中基本上没有关于将硫化物悬浮氧化与熔炉中的后续熔炼过程以及其废气列的化学联系起来的流程图的广泛理解。这篇综述详细介绍了过去几十年积累的闪速熔炼和闪速转换炉中的微观现象。
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