2017
DOI: 10.18503/1995-2732-2017-15-1-37-44
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Improving the blast furnace process by raising the natural gas flow rate in the upper heat exchnage stage

Abstract: Постановка задач (актуальность работы): для выплавки чугуна в доменной печи при минимальном удельном расходе дефицитного и дорогостоящего кокса целесообразно максимально заменять его природным газом. Поскольку изменение хода доменного процесса при повышении расхода газа создаёт угрозу подвисания шихты в пределах верхней ступени теплообмена, необходимо одновременно использовать мероприятия, исключающие нарушения в движении шихты. Цель: разработка режимов работы доменных печей, обеспечивающих снижение удельного … Show more

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“…This leads to a decrease in the total pressure drop and specific pressure drop (see Fig. 3, a) at a constant flow rate of the blast, and is a reserve for melting intensification [13][14][15]. Comparison of the data on the specific pressure drop for the analyzed periods shows that when using non-fluxed pellets, the furnace operated in unfavorable gas-dynamic conditions (average pressure drop 58.31 Pa/m 3 /min), which especially worsen with an increase in the proportion of pellets more than 25%.…”
Section: Resultsmentioning
confidence: 99%
“…This leads to a decrease in the total pressure drop and specific pressure drop (see Fig. 3, a) at a constant flow rate of the blast, and is a reserve for melting intensification [13][14][15]. Comparison of the data on the specific pressure drop for the analyzed periods shows that when using non-fluxed pellets, the furnace operated in unfavorable gas-dynamic conditions (average pressure drop 58.31 Pa/m 3 /min), which especially worsen with an increase in the proportion of pellets more than 25%.…”
Section: Resultsmentioning
confidence: 99%