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本介绍涟钢高炉和烧结配矿技术的发展及发展方向,随着高炉炉料结构的优化和精料方针的实施,铁前综合效益得到提高,各项经济技术指标得到改善。 相似文献
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刘素丽 《金属材料与冶金工程》2003,31(5):3-9
介绍了涟钢高炉和烧结配矿技术的发展及发展方向,随着高炉炉料结构的优化和精料方针的实施,铁前综合效益得到提高,各项经济技术指标得到改善。 相似文献
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通过铁料单烧、优化配矿以及高碱度、高MgO和使用烧结添加剂等一系列烧结杯试验,结果表明:各种原料的烧结性能及合理的配矿结构,对烧结生产具有指导意义。 相似文献
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着重介绍宣钢东区高炉原料输送系统工艺设计特点,解决宣钢800万t/a生产规模的原料生产与消耗的平衡。 相似文献
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This paper presents simulative tests in a continuous hot model of the lumpish zone in a blast furnace. Samples after reaction were analysed in compression tests and a relationship between reaction degree and temperature in a blast furnace was derived. Compression strengths of coke, pellets and sinter with different reaction degrees were measured at relevant temperatures using a high temperature compression testing machine with adjustable atmosphere. Based on the results, the regulation of strength variability and the mechanism of breakage of raw materials in blast furnaces were researched. As an effect of the increases of temperature and carbon loss rate, the strength of coke had a negative linear relationship with the temperature in the indirect reduction zone in a blast furnace. The carbon loss rate of coke in the stock column of a blast furnace is about 36% and the strength can be decreased by more than 90%. A practical way to save coke strength is to reduce the carbon loss rate. The strength of pellets was decreased by about 60% to 70% in the lumpish zone. If the original strength of pellets was higher than 2000 N, the high temperature strength roughly kept at a coordinative level over 1000 N and was sufficient to avoid damage in the blast furnace. Due to the reduction of hematite and disappearance of calcium ferrite, the strength of sinter showed a strong decline when the reduction degree reached 10%. The value at the top of the cohesive zone was only about 15% of that on the charging bank. Powder from sinter was easily produced at these two places. 相似文献
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叙述了低品质烧结矿在天铁高炉中的应用.通过改善烧结矿粒级组成,提高烧结矿强度,在煤粉中添加轻烧白云石混合喷吹、提高风温、大富氧操作等关键技术措施,有效地解决了低品质烧结矿所引发的硅高、渣量多的难题,保证高炉稳定顺行,降低了生产成本. 相似文献
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株冶60m^2烧结机的结块率随着原料结构的改变有下降的趋势,这给降低烧结块的能耗带来了很大的问题。文章就60m^2烧结机返粉率偏高的原因作出了分析,并采取了相应的改进措施,有效地降低了返粉率。 相似文献
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对宣钢高炉炉料结构进行了熔滴性能试验研究。单矿的熔滴试验结果表明:宣钢常用的2种烧结矿软化性能较好,但滴落性能较差,1 520℃仍未滴落;3种球团矿中自产球总体熔滴指标最好但软化区间最长(313℃);2种块矿中PB矿开始软化温度最低软熔区间最长,试验中未能滴落。蒙古矿软熔性能较好,但滴落温度高达1 518℃。通过对15种配矿方案进行的熔滴试验,结果表明:降低烧结矿配比,提高PB矿比例可改善炉料的熔滴性能。在试验条件下,配矿方案为"烧结矿68%+球团矿16%+PB矿16%"的炉料结构熔滴性能最佳。 相似文献
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