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| Название: | Состояние и перспективы применения ПУТ в доменных цехах металлургических предприятий Украины |
| Другие названия: | The state and prospects of pulverized coal use in blast furnace shops of metallurgical enterprises of Ukraine |
| Авторы: | Мищенко, И.М.
Асламова, Я.Ю.
Mishchenko, I.M.
Aslamova, Y.Y. |
| Ключевые слова: | доменная печь
пылеугольное топливо
комплексная компенсация
качество кокса
blast furnace
pulverized coal fuel
complex compensation
coke quality |
| Дата публикации: | 2016 |
| Издатель: | ДонНТУ |
| Библиографическое описание: | Мищенко, И.М. Состояние и перспективы применения ПУТ в доменных цехах металлургических предприятий Украины / И.М. Мищенко, Я.Ю. Асламова // Вестник ДонНТУ. - 2016. - №3(3). - С. 14–20. - Библиогр. в конце ст. |
| Аннотация: | Выполнен краткий анализ показателей выплавки чугуна с применением пылеугольного топлива
в четырех доменных цехах металлургических предприятий Украины. Обоснована необходимость первоочередного повышения качества кокса – одного из важнейших факторов комплексной компенсации негативных температурно-тепловых и газодинамических изменений доменного процесса, обусловленных применением пылеугольного топлива. |
| Описание: | Background. Ensuring the competitiveness of steel productsis possible due to decrease in specific consumption of metallurgical coke by replacing it with pulverized coal fuel (PCF). Development of technology of blast smelting with the use of PCF is relevant to metallurgical enterprises. The objective
of this work is the analysis and generalization of results of PCF injection technology, identifying factors to improve its efficiency, with particular attention paid to improving the quality of coke.
Materials and/or methods.The task was solved by the method of tactical analysis. The application of this method of research allowed detailing the overall situation of the PCF use and identifying key factors of improving the effectiveness of this technology at metallurgical enterprises of Ukraine.
Results. In the course of the study it is found that blast furnace workshops of four metallurgical enterprises of Ukraine with a production capacity of morethan 14 million tons/year are developing a technology of using pulverized coal in the amount of 142.3-172 kg/t of pig iron while reducing specific consumption of coke to 378.8-381 kg/t. In the blast furnace shop of PJSC "Donetsksteel" – Metallurgical Plant" it was possible to increase the effectiveness of PCF injection technology by improving the
quality of coke ("Premium" mark), the quality of ironstone part of the charge, the optimization of blast-furnace smelting parameters with the exception of natural gas from the combined air blast composition. In the blast furnace shop of PJSC "Alchevsk Iron and Steel Works" to improve the efficiency of the PCF injection the complex of pulverized coal injection is created, and the quality of coke is improved due to coking of tamped coal charge. In the blast furnace shop of PJSC "Zaporizhstal"
PCF flow is 151 kg/t, specific consumption of coke up to381 kg/t of pig iron, which is one of the best achievements in Ukraine In the blast furnace shop of PJSC "Ilyich Steel and Iron Works" (Mariupol) PCF flow is 136.7-154.4 kg/t and specific consumption of coke is 378.8-395.4 kg/t of pig iron. The
necessary dynamic conditions for pulverized coalinjection are created at the enterprise.
Conclusion. Improving the efficiency of PCF injection ispossible by improving coke quality and the use of other compensatory factors. To increase the flow of pulverized coal in the conditions of Ukrainian enterprises up to 180-200 kg/t it is necessary to: further improve the quality indicators of the components of the BF charge; increase the blast temperature up to 1150-1200 °C, increase the degree of
its oxygen enrichment to 25-30%; prepare coke byits fractional composition before loading into the blast furnace; increase the pressure of furnace top gases in blast furnaces to 0.15-0.2 MPa; ensure uniform PCF distribution on the tuyeres. |
| URI: | http://ea.donntu.org/handle/123456789/30700 |
| Располагается в коллекциях: | №3(3)'2016
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