共查询到19条相似文献,搜索用时 459 毫秒
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介绍了对八钢A高炉开炉以来不同时期的有害元素负荷的跟踪调查,对A高炉有害元素负荷的变化趋势、分布特点、富集原因以及有害元素对高炉冶炼的影响进行了分析。提出了八钢A高炉控制有害元素负荷的措施及建议。 相似文献
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包钢高炉除尘灰中有害元素分析研究 总被引:1,自引:0,他引:1
利用LS230激光粒度分析仪,检测了各级高炉煤气除尘灰及出铁场环境灰的粒度并获得了灰尘粒度分布;利用化学分析法对重力灰、旋风灰、布袋灰和环境灰中碱金属氧化物K2O、Na2O及其他有色金属元素Pb、Zn、As、Sn质量分数进行了分析测定,研究了有害元素在各级除尘灰及环境灰中的分布规律。研究结果表明:煤气除尘灰中重力灰粒度最大,有害元素质量分数最少,只有1.94%;布袋灰粒度最小,有害元素质量分数最高,为15.79%;环境灰粒度较各级煤气除尘灰均小,所含有害元素质量分数较少,为1.02%。说明高炉煤气除尘灰粒度越小,所含有害元素越多,布袋灰有害元素脱除是有害元素处理和回收利用的重要途径。 相似文献
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有害元素对攀钢高炉的危害分析 总被引:7,自引:0,他引:7
分析了锌和碱金属等有害元素在炉内行为和攀钢高炉结瘤物成分及有害元素走向,揭示了有害元素对攀钢钒钛磁铁矿高炉冶炼产生的危害,锌对攀钢高炉已经产生危害,而碱金属目前未对高炉产生不良影响,但随着炉料结构的变化不容忽视,并提出了相应的应对措施。 相似文献
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《钢铁冶炼》2013,40(1):30-40
AbstractCement bonded agglomerates made of iron rich byproducts from the iron and steel industry have been used as burden material for blast furnaces for over a decade. In spite of that, their use is restricted to less than 5% of the total burden material, because at higher percentages the blast furnace starts behaving erratically. It is suspected that this is due to the disintegration of the agglomerates under high temperature and reducing conditions. In order to improve the quality of the cement bonded briquettes, the effects of various parameters on their behaviour have been studied. The briquettes have been tested in the laboratory under isothermal test conditions and under simulated blast furnace conditions. The briquettes have also been tested in a pilot blast furnace. This paper describes the effect of different parameters on the performance of briquettes tested under the three conditions. 相似文献
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数学模型在宝钢高炉操作中的应用 总被引:1,自引:0,他引:1
论述了炉况判断GO-STOP模型、TC指数和炉温预报模型、软熔带模型、煤气流分布判断和布料控制模型的原理、建模方法及其在宝钢大型高炉生产操作中的应用情况。宝钢高炉生产不仅采用先进的自动化装备,而且从 1号高炉建设起即先后引进了8个先进的数学模型指导高炉操作。通过长期学习、消化,特别是近几年来对模型的改造和完善,并融人现代智能模型技术,大大提高了模型的精度和应用效果,这些模型为宝钢大型高炉实现长期稳定顺行、主要技术经济指标达到世界先进水平发挥了重要作用。 相似文献
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Blast furnaces that operate with pellets and sinter normally use high basicity sinter and acid pellets to balance the slag chemistry. When external additives are used, irregular slag formation occurs due to their uneven distribution in the burden. If basic sinter is used together with a large amount of acid pellets, all additives are incorporated in the iron bearing materials with an improved burden mixture as a consequence. During a campaign in the LKAB Experimental Blast Furnace, pellets and sinter were operated at an ultra low slag volume. A high amount of pellets was balanced with high basicity sinter. An improved blast furnace operation is shown when operating at ultra low slag volume and without external slag formers. During the test period, the blast furnace operation was smooth and stable, and the reductant rate was decreased. 相似文献
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对近10年国内外建成投产的巨型高炉技术装备进行了阐述,研究分析了当代巨型高炉的技术特征。认为当代巨型高炉在工艺技术装备方面取得了长足进步,在高炉大型化、精料、无料钟炉顶设备与炉料分布控制、高炉长寿、高风温、富氧喷煤、煤气干法除尘等方面成就突出。 相似文献
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I. F. Kurunov V. N. Loginov S. S. Lyapin N. S. Polyakov V. N. Titov 《Metallurgist》2007,51(7-8):425-433
The use of schungite as a partial replacement for coke is practiced in Russia at a number of metallurgical plants, both in
the production of foundry iron (its primary use) and in making conversion pig iron. The largest amount of coke is replaced
when foundry iron is being made, the replacement coefficient in this case having a value within the range 0.8–1.3. Studies
that included continuous monitoring of the temperature of the carbon blocks in blast furnaces with volumes of 1719, 3200,
and 5580 m3 unambiguously demonstrate that the thickness of the slag crust in blast furnaces increases with the use of schungite. Protecting
the lining of the hearth through the use of schungite is also accompanied by a decrease in coke consumption.
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Translated from Metallurg, No. 8, pp. 53–57, August, 2007. 相似文献