One of the main methods to intensify blast-furnace smelting is to improve the quality of the sintered raw materials. The article presents the study results of the influence of the composition and metallurgical properties of various Mikhailovsky GOK pellets introduced into the blast-furnace charge based on the technical and economic indicators of the blast-furnace treatment. The studies include physical modeling of pellet production of various composition, experimental determination of their metallurgical properties, as well as blast-furnace smelting simulation using the balance logical-and-statistical model of the Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences (IMet). According to the simulation results, the productivity of the blast-furnace process increases when using all the test pellets, and the specific coke consumption decreases. It is revealed that when using iron-rich pellets in the charge, the sulfur concentration in the slag is significantly higher, which creates the risk of producing substandard cast iron. Based on the obtained data analysis, the technology for the use of enriched pellets (SiO2 at the level of 6%) seems to be optimal, as it provides an increase in productivity with a relatively low coke consumption and acceptable slag sulfur content.

中文翻译：

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球团成分优化提高高炉冶炼技术经济性能

强化高炉冶炼的主要方法之一是提高烧结原料的质量。文章根据高炉处理的技术经济指标，介绍了各种米哈伊洛夫斯基GOK球团矿的成分和冶金性能对高炉炉料的影响的研究结果。这些研究包括对各种成分的球团生产进行物理建模，对其冶金特性进行实验确定，以及使用俄罗斯科学院乌拉尔分院冶金研究所的平衡逻辑和统计模型进行高炉冶炼模拟(IMet)。根据模拟结果，当使用所有测试球团时，高炉工艺的生产率提高，焦炭消耗量减少。据透露，在炉料中使用富铁球团矿时，炉渣中的硫浓度明显偏高，存在生产不合格铸铁的风险。根据获得的数据分析，使用浓缩球团矿（SiO2 水平为 6%）的技术似乎是最佳的，因为它以相对较低的焦炭消耗和可接受的炉渣硫含量提高了生产率。