ABSTRACT Alkali metal circulation enrichment occurs in blast furnaces, which is harmful to the blast furnace. The amount of enrichment helps to quantify the effect of alkali metals on blast furnace production, but it is not possible to directly measure the actual alkali metal enrichment in blast furnaces for technical reasons. On the basis of a thermodynamic model, FactSage was used to calculate the effects of alkali loading, slag basicity, MgO content in the slag and Al2O3 content in the slag on the alkali metal enrichment in the blast furnace. Quantitative relationships among various factors and the enrichment were obtained, and the degree of influence of various factors on the amount of enrichment was determined. The basicity B2 of the slag was the key factor for enrichment. With an increase in the slag basicity of 0.1, the enrichment of K and Na increased by 5.3 and 1.6 kg/tHM, respectively.

中文翻译：

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多因素对高炉碱金属富集的热力学模型影响

摘要 碱金属循环富集发生在高炉中，对高炉有害。富集量有助于量化碱金属对高炉生产的影响，但由于技术原因，无法直接测量高炉中实际的碱金属富集情况。在热力学模型的基础上，FactSage被用来计算碱量、渣碱度、渣中MgO含量和渣中Al2O3含量对高炉碱金属富集的影响。得到各因素与富集量之间的定量关系，确定各因素对富集量的影响程度。炉渣的碱度B2是富集的关键因素。随着渣碱度增加 0.1，