The distribution of the ore/coke ratio along the radius of a furnace is currently estimated by a change in two criteria, i.e., the proportion of CO used and the temperature of the blast furnace gas. Although this approach provides only a qualitative representation, changes are made to the load programs on this basis, which may result in less than optimal decision-making and deterioration in performance. To determine the optimal distribution of the ore/coke ratio, in this study, we selected additional known criteria that characterize the reduction and thermal energy processes of the gas stream, which more accurately reflect the influence of changes in the ore/coke (O/C) ratio on the course of blast-furnace smelting. Several easily calculated criteria are adopted to characterize the thermal and reduction processes, namely the carbon consumed to meet thermal needs C t , the change in the ratio of the water equivalents W g / W b along the throat radius, the proportion of CO used (η CO ), and the temperature of the blast furnace gas ( T bfg ). As a result, we obtained a single integrated calculation method for assessing the optimal distribution of O/C that includes these four criteria. Based on the analysis of these criteria, we make recommendations regarding the optimal distribution of O/C along the radius of the blast furnace.

中文翻译：

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沿高炉半径评估矿石/焦炭比最佳分布的标准

矿石/焦炭比沿熔炉半径的分布目前通过两个标准的变化来估计，即所用的 CO 比例和高炉煤气的温度。虽然这种方法只提供了一个定性的表示，但在此基础上对加载程序进行了更改，这可能会导致无法做出最佳决策和性能下降。为了确定矿石/焦炭比的最佳分布，在本研究中，我们选择了额外的已知标准来表征气流的还原和热能过程，这些标准更准确地反映了矿石/焦炭 (O/ C) 高炉冶炼过程中的比例。采用几个容易计算的标准来表征热和还原过程，即为满足热需求 C t 所消耗的碳、沿喉道半径的水当量比 W g / W b 的变化、所用 CO 的比例 (η CO ) 和高炉煤气温度 ( T bfg)。因此，我们获得了一种单一的综合计算方法，用于评估包含这四个标准的 O/C 的最佳分布。基于对这些标准的分析，我们就 O/C 沿高炉半径的最佳分布提出了建议。