评估在增加高炉体积时生产力的变化和强迫移动的限制

G. Yu. Kryachko, Ye. M. Sigarev
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引用次数: 0

摘要

选择新的或改造的高炉的有用体积是制造商和设计者的紧迫任务;因此,从实践和理论的角度来看,对不同体积炉的技术能力的评估一直是人们感兴趣的。所提出的工作的目的是选择最具代表性的指标,借助这些指标,可以对不同体积的炉的运行进行比较评估,对计划经济和市场经济条件下的炉的运行进行评估,并试图确定和分类限制体积增加的炉强制运行的因素。由此可见,使用单位面积加热炉计算指标是不合适的,因为面积加热炉并不是加热炉的主要尺寸。主要尺寸为全容积炉,这决定了其设计单位和建设资金的金额。单位体积炉的具体生产率指标同样取决于炉高,并充分反映不同体积炉的性能。体积大的紧凑型高炉的无可争辩的优势<图中显示了1500m3与更大体积的炉的对比,这表明基于平衡和气体动态成分的概念来评估炉性能的简化方法的不完善,因为在确定这些成分的影响因素时难以考虑到所有的成分。确定并分类了制约中大型高炉工艺强化的因素。主要的外部因素是焦炭、铁矿石原料和吹炼的质量特性,更具体地说,是焦炭的热强度、铁中原料的丰富度以及鼓风机提供吹炼所需压缩程度的能力。主要的结构解决方案,以克服显著限制的炉运行与有用的体积>1500m3均有合理的外形、输出比、风管截面和炉膛截面,以及采用无锥装料装置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of changes in productivity and limitations in forcing movement when increasing the volume of blast furnaces
The selection of the useful volume of new or reconstructed blast furnaces is an urgent task for both manufacturers and designers; therefore, the assessment of the technological capabilities of furnaces of different volumes has always been of interest from both a practical and a theoretical point of view. The purpose of the presented work is the selection of the most representative indicators, with the help of which a comparative assessment of the operation of furnaces of different volumes is possible, the evaluation of the operation of furnaces in the conditions of planned and market economies, as well as an attempt to determine and classify the factors limiting the forced operation of furnaces of increased volume. It is shown that the use of indicators calculated per unit area furnace is not appropriate, since area furnace is not the main size furnace. The main size is full volume furnace, which determines design unit and amount of capital costs for its construction. Specific productivity indicators calculated per unit volume furnace similarly depend on the height furnace and adequately reflect performance of furnaces of different volumes. The indisputable advantage of compact blast furnaces with a useful volume < 1500 m3 in comparison with furnaces of larger volumes is shown, which indicates imperfection of a simplified approach to evaluating performance of furnaces based on the concepts of balance and gas dynamic components, since it is difficult to take into account all the components when determining these components influencing factors. Factors limiting process intensification in blast furnaces of medium and large volumes have been established and classified. The main external factors are the quality characteristics of coke, iron ore materials and blowing, more specifically, hot strength of coke, richness of raw materials in iron and the ability of air blowers to provide blowing with required degree of compression. The main structural solutions to overcome significant limitations in operation of furnaces with a useful volume > 1500 m3 are a rational profile, ratio of output cross-section of air nozzles and cross-section furnace, as well as the use of coneless loading devices.
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