共查询到19条相似文献,搜索用时 187 毫秒
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含铁炉料良好的冶金性能是保障高炉炉况顺行,节燃增产的前提条件。熔滴试验对于高炉含铁炉料冶金性能把握具有重要意义。但由于熔滴试验本身成本较高且检测耗时,多数企业仅在高炉炉况出现重大变化时通过试验追溯炉料冶金性能。因此,操作者难以根据炉料结构变化预判其冶金性能,进而调整操作方针。在对莱钢含铁炉料进行熔滴性能试验检测的基础上,通过遗传算法优化最小二乘支持向量机关键参数,以含铁料化学成分对其熔滴性能指标建立优化预测模型。模型预测精度高,且避免了建模过程中的主观性,可指导生产配料及调整高炉操作。 相似文献
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介绍了鞍钢烧结球团生产的现状,指出新型炉料结构对提高高炉冶炼效果的作用,并分析了鞍钢高炉生产应采用的炉料结构. 相似文献
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根据无料钟高炉布料影响因素和特点,通过应用无料钟高炉布料数学模型模拟布料后炉料的初始分布,从理论上定性定量研究分析无料钟高炉布料特性。 相似文献
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《钢铁研究学报(英文版)》2016,(8):765-771
Mathematical models for burden descending process have been applied to obtain whole burden structures in blast furnace,whereas the accuracy of those burden descent models has not been sufficiently investigated.Special evaluation method based on timeline burden profiles was established to quantitatively evaluate the error between ex-perimental and modeled burden structures.Four existing burden descent models were utilized to describe the burden structure of a 1/20 scaled warm blast furnace.Input modeling conditions including initial burden profile,descending volumes in each time interval,and normalized descending velocity distribution were determined via special image pro-cessing technology.Modeled burden structures were evaluated combined with the published experimental data.It is found that all the models caught the main profile of the burden structure.Furthermore,the improved nonuniform de-scent model (Model IV)shows the highest level of precision especially when burden descends with unstable velocity distribution tendency.Meanwhile,the traditional nonuniform descent model (Model III)may also be desirable to model the burden descending process when the burden descending velocity presents a linear tendency.Finally,the uni-form descent model (Model I)might be the first option for roughly predicting burden structure. 相似文献
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介绍了11号高炉使用多种烧结矿,尤其是炉料结构发生频繁变化时,对高炉顺行的影响,同时对高炉不接受压差的原因,壁体温度和炉体热负荷波动产生的原因进行了分析,并提出炉料结构发生变化后应采取的操作制度。 相似文献