基于冶金性能复合体的结块负荷优化利用高炉炉料组分复杂的高温特性优化炉料组分

A. V. D’yakov, M. Vituschenko, A. Odintsov, V. Kobelev, A. Chernavin, G. A. Nechkin
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引用次数: 0

摘要

在烧结原料强度特性的同时,烧结原料的高温特性——还原性、软化冶炼温度和填充焦炭对熔体的过滤性对高炉工艺指标有很大影响。了解炉料性能变化规律,是通过优化高炉炉料组成来强化高炉冶炼的实际任务。研究了高炉炉料组成对炉料还原性、软化冶炼温度区间、中间炉渣粘度、充焦后热产物过滤性和中间炉渣脱硫能力的影响。评价转炉镍渣添加量对铁矿石原料复合高温性能的影响。考虑高炉炉料中球团比例对炉渣过滤过程的影响。结果表明,在高炉炉料冶炼过程中,炉料中球团含量的增加导致炉渣充焦滤渣性降低。确定了转炉镍渣在“安赛乐米塔尔”公司烧结和高炉工艺中的有利作用。对所得数据的分析表明,在熔渣烧结过程中,铁水中的硫含量实际上只取决于中间渣的碱度。确定了铁矿石原料中主要成分含量范围,以及JSC“ArcelorMittal Temirtau”烧结炉料和高炉炉料含量,具有最有利的高温性能复合物,在很大程度上满足了对铁矿石原料的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of agglomeration burdens by metallugical properties complex Report 2. Optimization of BF burden components by their complex high temperature properties
Along with strength characteristics of agglomerated raw materials, its high temperature properties - the degree of reducibility, softening-smelting temperature and melt filterability through coke filling - have a great influence on technological indices of BF process. Knowledge of the properties change regularities is and actual task for through optimization of blast furnace burden composition aimed at BF smelting intensification. Blast furnace burden composition influence on reducibility, temperature interval of softening-smelting, viscosity of intermediate slags, filterability heat products through coke filling and desulphurization ability of intermediate slags studied. Influence of BOF nickel slag additions on complex of high temperature properties of iron ore raw materials estimated. Influence of pellets portion in BF burden on the process of BF slag filtration considered. It was shown, that increase of pellets portion in the burden results in slag filterability through coke filling decrease during the BF burden smelting. A favorable role of BOF nickel slag in agglomeration and blast furnace processes of JSC “ArcelorMittal Temirtau” determined. Analysis of the data obtained showed that Sulphur content in hot metal during slag sinter smelting depends practically only on intermediate slag basicity. Range of main components content in the iron ore raw materials determined, as well as contents of sinter and blast furnace burdens of JSC “ArcelorMittal Temirtau”, having most favorable complex of high temperature properties and to a great extent meeting the requirements to the iron ore raw materials.
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