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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >FACTSAGE~(TM) thermo-equilibrium simulations of mineral transformations in coal combustion ash
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FACTSAGE~(TM) thermo-equilibrium simulations of mineral transformations in coal combustion ash

机译：煤炭燃烧灰中矿物转化的常量〜（TM）热平衡模拟

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摘要

The aim of this investigation is to report on the influence of operating conditions, and of additives such as potassium carbonate, on the slagging behaviour of South African coal. This was done using a FACTSAGE? model that was previously developed to simulate the chemistry and mineral transformations occurring during a fixed-bed countercurrent gasification process. The mineral transformations in K- and Al-containing inorganic compounds under certain thermal conditions were tracked to see whether these species remain in the minerals or are captured by the slag. The main contributors to slag formation and possible inorganic mineral transformations were identified. The addition of potassium carbonate to the coal before thermal processing decreases the melt formation temperature and the melt percentage. The mineral transformations and slagging behaviour depend on the percentage of potassium in the sample, as well as the basic components present in the coal.
机译：该调查的目的是报告操作条件的影响和碳酸钾等添加剂，如南非煤的粘结行为。 这是使用一个事实完成的？ 以前开发的模型，以模拟在固定床逆流气化过程中发生的化学和矿物转化。 跟踪含k-和含铝的无机化合物的矿物质转化，以看待这些物种是否留在矿物质中或被渣捕获。 鉴定了炉渣形成和可能的无机矿物转化的主要贡献。 在热处理之前将碳酸钾加入煤中降低熔体形成温度和熔体百分比。 矿物转化和脱渣行为取决于样品中钾的百分比，以及煤中存在的基本组分。

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