共查询到19条相似文献,搜索用时 78 毫秒
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博宏小河公司烧结返矿率一直居高不下,造成烧结生产成本增加。为此,分析了影响其90m2烧结机返矿率的因素,从优化配料、强化制粒和造球、合理调整七辊布料器的角度、合理提高料层厚度、适当提高点火温度、对烧结机本体设备进行堵漏风等方面着手,通过两年的生产实践,使烧结返矿率从2011年的20.08%降到了2013年的13%。 相似文献
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混匀矿中返矿的比率约为25%~50%。如此大比例的返矿会对烧结过程和烧结矿质量产生很大影响。研究旨在揭示返矿量和焦粉量变化的影响。研究采用了因子设计方法,研究表明返矿的产生主要取决于烧结混合料中的固体燃料和返矿比例,增加混合料中的返矿配入量会减少烧结过程中的返矿发生量。烧结过程效率随着混合料中返矿比例的增加而提高(最适宜的混合碱度为1.6)。研究表明,要确保返矿平衡率在90%~110%的范围内,混合料中返矿配比最高不能超过35%,最小不能<25%。 相似文献
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对攀钢烧结厂烧结返矿率进行了调查,并运用冶金物理化学的物理进行了分析研究,提出了提高烧结成品率、降低返矿率的措施。 相似文献
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澳富粉粒度很细,配入冀东铁精矿中烧结,使烧结矿质量下降。为改善烧结矿质量,在实验室进行了提高配碳量、增加高硅球团返矿量和提高碱度的试验研究。结果认为,提高碱度是最有效的措施。 相似文献
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通过对烧结返矿采用提前加水润湿工艺,强化返矿作为混合料造球的“核心”作用,不但减小了一次混合料水分波动,而且提高了混合料的成球速度和成球率,改善了烧结料层透气性,对提高烧结矿产、质量有很好的效果。 相似文献
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《钢铁冶炼》2013,40(3):226-232
AbstractConventional tests of sinter strength such as the Tumbler test and the shatter test cannot predict the effect of transport parameters such as the drop height, conveying length, etc. on the amount of return fines generated during transport. In this work, various steps involved in transportation were simulated using customised drop and vibration tests, and the effect of sinter size, drop height and conveying time on the percentage of return fines and volume breakage was examined. Drop and vibration tests revealed that the extent of volume breakage is higher in case of larger sinter particles, but the percentage of return fines from various size fractions did not follow the corresponding trend in volume breakage. The contribution of various size fractions of sinter to generation of return fines was found to be in the order: 5–10 mm>20–30 mm~30–40 mm>10–20 mm. For any size fraction, the percentage of fines generated was found to be linearly related to the drop height in the case of drop tests and logarithmically related to the vibration time in the case of vibration tests. 相似文献
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邯钢烧结厂400 m2烧结配料车间用2台电子皮带热返矿计算秤代替原冲击流量式热返矿计量秤后,解决了热返矿的计量不准确问题.系统投运后运行稳定可靠、计量精度高,在提高烧结矿质量、降低返矿率、减少燃料消耗等方面效果显著. 相似文献
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The fine ore sintering has problems such as deteriorated permeability of the sinter layer, poor oxidizing atmosphere, high sinter return rate, poor productivity and quality indexes, and increased fuel consumption. In order to increase the quality index of the sintered ore fines of the fine ore fines, and to meet the production needs of the ultra- large blast furnaces, experimental studies were carried out to enhance the sintering with external fluxes and fuels. Proper individual addition proportions of lime, limestone and coke were obtained by test trials. The feasible grain size of individual added limestone was optimized. The industrial production test achieved the similar result comparing to the outcome of the pilot trial. Both the sinter productivity and quality were improved, fuel consumption decreased, energy and emission reduced. 相似文献