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首页> 外文会议>Ninth international conferece on molten slags, fluxes and salts >THE MAIN THERMO-STATISTICAL MODELS OF METALLURGICAL SLAGS: THEORY AND APPLICATIONS
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THE MAIN THERMO-STATISTICAL MODELS OF METALLURGICAL SLAGS: THEORY AND APPLICATIONS

机译：冶金渣的主要热统计模型：理论与应用

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摘要

Thermodynamic softwares are nowadays more and more used to understand and to control complex pyrometallurgical processes. Typically, in steelmaking shops, these tools can help the operator to better control the slag-metal reactions by optimizing slag compositions and/or stirring conditions, to define the deoxidation sequence, to better monitor the ferro-alloys additions at the different stages of the process, to minimize the refractory wear as well as refractory interactions with the melt, etc… These computer programs, based on different procedures to minimize the Gibbs energy, contain thermodynamic models for all the involved phases and especially for slag which remains one of the most difficult to describe particularly because of the necessity to describe the Short Range Ordering phenomenon occurring in these melts over large ranges of composition. This paper gives an overview of the existing thermodynamic models of slags, especially those based on i) the quasichemical approach such as the Cell model, the Generalized Central Atom model and the Modified Quasichemical Model and ii) associated molecule or ionic species formation approach such as the Associate Model and the Reciprocal Ionic Liquid Model. The theoretical basis will be given for each model together with examples of applications to industrial pyrometallurgical processes when available.
机译：如今，热力学软件越来越多地用于理解和控制复杂的火法冶金工艺。通常，在炼钢车间中，这些工具可通过优化炉渣成分和/或搅拌条件，定义脱氧顺序，更好地监控炼钢厂不同阶段中铁合金的添加，来帮助操作员更好地控制炉渣-金属反应。过程，以最大程度地减少耐火材料的磨损以及与熔体的耐火材料的相互作用等。这些计算机程序基于不同的程序以最小化Gibbs能量，包含所有相关相的热力学模型，尤其是矿渣，至今仍是其中最热的模型之一。很难描述，特别是因为必须描述在大范围组成下这些熔体中发生的短程有序现象。本文概述了炉渣的现有热力学模型，特别是基于以下方面的模型：i）准化学方法，例如细胞模型，广义中心原子模型和改进的拟化学模型，以及ii）相关分子或离子物种形成方法，例如缔合模型和互易离子液体模型。将为每个模型提供理论基础，并提供适用于工业火法冶金工艺的示例。

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