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首页> 外文会议>Symposium on sulfide smelting >BASIC PRINCIPLES OF SULFIDE SMELTING AND CONVERTING WITH OXYGEN-RICH GAS
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BASIC PRINCIPLES OF SULFIDE SMELTING AND CONVERTING WITH OXYGEN-RICH GAS

机译：硫化物冶炼基本原理与富氧气体转化

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Thermodynamics and rate process fundamentals are two of the important principles involved in nonferrous production processes. The process configuration establishes whether thermodynamics or rate process behavior is most relevant in a particular application. In this paper, thermodynamic theory and rate process fundamentals are used to analyze the main characteristics of smelting and converting processes. The effect of increased oxygen potential is examined with emphasis in view of the increased use of highly oxygen-enriched gas in modem smelting processes. Phase equilibrium and the distribution of minor elements between copper or nickel mane and FeO_x-SiO_2- or FeO_x-CaO-based slag are reviewed. The use of oxygen-rich gas has no serious effects on the recovery of valuable copper and silver in the matte phase, while the recovery of nickel and cobalt is adversely affected. The oxygen content in the gas also strongly affects the distribution behavior of arsenic, antimony and bismuth. Analysis of the rate processes occurring in the shaft of flash smelting and converting furnaces by a 3-D computational fluid-dynamics model is also discussed. After being validated with experimental data collected in a large laboratory furnace, the computer model has been used to simulate the main features of an industrial flash converting operation. The results present quantitative features of the improved mixing of the particle-gas suspension and increased oxygen efficiency obtained with a distributor-cone burner compared with those with a single axial entry burner. The role of basic principles in the engineering analysis of high-intensity matte smelting processes is also discussed.
机译：热力学和率流程基础是有色生产过程中涉及的两个重要原则。过程配置建立了热力学或速率过程行为是否在特定应用中最相关。本文采用了热力学理论和速率过程基础，用于分析冶炼和转化过程的主要特征。检查氧气潜力增加的效果，重点是在调制解调器冶炼过程中使用高氧富含气体的使用增加。综述了相平衡和铜或镍麦片和Feo_X-SiO_2或Feo_X-Cao的渣之间的次要元件的分布。富氧气体的使用对磨砂相中有价值的铜和银的回收没有严重影响，而镍和钴的回收率受到不利影响。气体中的氧含量也强烈影响砷，锑和铋的分布行为。还讨论了通过三维计算流体动力学模型在闪蒸冶炼和转换炉中发生的速率过程的分析。通过在大型实验室炉中收集的实验数据验证后，计算机模型已被用于模拟工业闪光转换操作的主要特征。结果存在与具有单轴入口燃烧器的分配器 - 锥形燃烧器的改进的颗粒 - 气悬架混合和增加的氧效率的定量特征。还讨论了基本原理在高强度遮光过程工程分析中的作用。

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