Распределение материалов по радиусу колошника при загрузке в доменную печь раздельных коксовых и рудных подач

V. B. Semakova

doi:10.31498/2225-6733.38.2019.181267

Authors

V. B. Semakova State higher educational establishment "Priazovskyi state technical university", Mariupol, Ukraine

DOI:

https://doi.org/10.31498/2225-6733.38.2019.181267

Keywords:

sintered iron ore, pellets, coke, blast furnace, separate charging, ore load, inclination angle of the surface

Abstract

The objective of the article is to investigate analytically the distribution of the layers of ore materials and coke along the blast furnace radius after the charging with a bell-type charging unit by means of separate four-skip supplies with an increase of ore to coke ratio loading from 3,5 to 5,0 kg/kg. Alternations in radial ore loads at blast furnace charging with increased separate ore and coke supplies by means of a charging unit of a bell-type have been analyzed. It was shown that at the charging with the cycle of supplies of 4Р↓ 4К↓ types with formation of the crest of the materials near the furnace walls upon the flat surface of the bulk the distribution of ore loads along the furnace top radius depended upon the relations of natural inclination angles and the volumes of coke and ore materials. The change in relationship between the heights of ore and coke layers along the furnace radius at increased aggregate ore load within the charging cycle has been analyzed. The comparison of ore materials layers distribution along the top radius showed that a decrease in aggregate ore load at the charging with sintered ore ensured formation of an increased gas permeability area inside the centre of the furnace, which is filled with coke and thus promotes formation of axial gas flow. At increased ore loads in the supplies cycle the axial column of the charge comprises a mixture of sintered ore and coke with decreased gas permeability. Blast furnace operation with application of pellets that have smaller angle of natural inclination, as compared to sintered ore is characterized by formation of a decreased gas permeability area inside the centre of the top, which is filled with ore material and has a peripheral gas flow. An increase in ore load, exceeding the value of 4,5 kg/kg in the cycle, consisting of two separate enlarged supplies of coke, ore materials and pellets supplies in the charge requires modified modes of blast furnaces charging

Author Biography

V. B. Semakova, State higher educational establishment "Priazovskyi state technical university", Mariupol

Кандидат технических наук, доцент

References

Список использованных источников (ГОСТ):

О технологии доменной плавки при использовании пылеугольного топлива / В.Г. Аносов [и др.] // Металургія : Збірник наукових праць ЗДІА. – Запоріжжя, 2009. – Вип. 20. – C. 37-43.

Семакова В.Б. Вдувание пылеугольного топлива в доменные печи ПАО «ММК им. Ильича» при их загрузке утяжеленными подачами / В.Б. Семакова, Ю.А. Зинченко, Ю.О. Шадловский // Металлургическая и горнорудная промышленность. – 2016. – № 3. – С. 18-21.

Ефименко Г.Г. Металлургия чугуна / Г.Г. Ефименко, А.А. Гиммельфарб, В.Е. Левченко. – К. : Вища школа, 1988. – 352 с.

Металлургия чугуна / Е.Ф. Вегман [и др.]. Под ред. Ю.С. Юсфина. – М. : Академкнига, 2004. – 774 с.

Управление радиальным распределением шихты и газов в доменных печах ОАО «ММК им. Ильича» при раздельной загрузке увеличенных масс кокса и агломерата / А.А. Томаш [и др.] // Металлургические процессы и оборудование. – 2005. – № 2. – С. 35-38.

Semakova V.B. Economic analysis of reduction processes in blast furnaces / V.B. Semakova, V.V. Semakov, D.I. Gavriloglu // Steel Transl. – 2012. – Vol. 42. – № 4. – Pp. 319-323. – Mode of access: DOI:10.3103/S0967091212040146.

Тарасов В.П. Газодинамика доменного процесса / В.П. Тарасов. – М. : Металлургия, 1990. – 216 с.

Большаков В.И. Управление загрузкой и распределением шихты на колошнике и эффективность доменной плавки / В.И. Большаков; под ред. В.И. Большакова, И.Г. Товаровского // Познание процессов доменной плавки : Коллективный труд. – Днепропетровск : Пороги, 2006. – С. 87-109.

Федулов Ю.В. Механика формирования слоя материалов на колошнике доменной печи / Ю.В. Федулов // Сталь. – 1991. – № 3. – С. 9-14.

Исследование массопереноса при потере стабильности граничащих зернистых слоев / В.П. Taрaсoв [и др.] // Сталь. – 1991. – № 9. – С. 11-14.

Исследование газопроницаемости доменной шихты при различном расположении слоев компонентов / В.П. Русских [и др.] // Металлургическая и горнорудная промышленность. – 2015. – № 1. – С. 13-16.

References:

Anosov V.G., Fomenko A.P., Krutas N.V., Tsaplina T.S. O tehnologii domennoj plavki pri ispol’zovanii pyleugol’nogo topliva [About blast furnace smelting technology using pulverized coal]. Metalurgіja – Metallurgy, 2009, vol. 20, pp. 37-43. (Rus.)

Semakova V.B., Zinchenko Yu.A., Shadlovskiy Yu.O. Vduvanie pyleugol’nogo topliva v domennye pechi PAO «MMK im. Il’icha» pri ih zagruzke utjazhelennymi podachami [Powder coal injection into the blast furnaces at PAO MMK im. Il’icha charged with heavier supplies]. Metallurgicheskaja i gornorudnaja promyshlennost’ – Metallurgical and Mining Industry, 2016, no. 3, pp. 18-21. (Rus.)

Efimenko G.G., Gimmel’farb A.A., Levchenko V.E. Metallurgija chuguna [Iron metallurgy]. Kyiv, High School Publ., 1988. 352 р. (Rus.)

Vegman E.F., Zherebin B.P., Pokhvisnev A.N., Iusfin Iu.S. Metallurgija chuguna [Iron metallurgy]. Moscow, Academic book Publ., 2004. 774 р. (Rus.)

Tomash A.A., Kosolap N.V., Malimon A.A., Peftiev I.M., Dolia S.N. Upravlenie radial’nym raspredeleniem shihty i gazov v domennyh pechah OAO «MMK im. Il’icha» pri razdel’noj zagruzke uvelichennyh mass koksa i aglomerata [Control of radial distribution of the charge and gases in blast furnaces belonging to «Ilych Iron and steel; Works» PJCS at separate charging of increased quantities of coke and sintered ore]. Metallurgicheskie processy i oborudovanie – Metallurgical processes and equipment, 2005, no. 2, рр. 35-38. (Rus.)

Semakova V.B., Semakov V.V., Gavriloglu D.I. Economic analysis of reduction processes in blast furnaces. Steel in Translation, 2012, vol. 42, no. 4, pp. 319-323. doi: 10.3103/S0967091212040146.

Tarasov V.P. Gazodinamika domennogo processa [Gas dynamics of the blast-furnace pro-cess]. Moscow, Metallurgy Publ., 1990. 216 р. (Rus.)

Bol’shakov V.I. Upravlenie zagruzkoj i raspredeleniem shihty na koloshnike i jeffektivnost’ domennoj plavki [Control of charging and charge distribution on the top and efficiency of blast furnace smelt]. Poznanie processov domennoj plavki: kollektivnyj trud – Cognition of processes of blast furnace smelting: collected papers. Dnepropetrovsk, Porogi Publ., 2006, pp. 87-109. (Rus.)

Fedulov Ju.V. Mehanika formirovanija sloja materialov na koloshnike domennoj pechi [Mechanics of formation of the materials layer on the blast furnace top]. Stal’ – Stееl, 1991, no. 3, pp. 9-14. (Rus.)

Tarasov V.P., Semakova V.B., Tomash A.A., Maianov V.A., Tarasov P.V. Issledovanie massoperenosa pri potere stabil’nosti granichashhih zernistyh sloev [Study of mass transfer during loss in stability of interfacial grained layers]. Stal’ – Steel, 1991, no. 9, pp. 11-14. (Rus.)

Russkikh V.P., Semakov V.V., Gavriloglu D.I., Podgornyi M.A., Kharchenko I.I. Issledovanie gazopronicaemosti domennoj shihty pri razlichnom raspolozhenii sloev komponentov [Investigation of gas transmission of blast furnace burden at various location of component layers]. Metallurgicheskaja i gornorudnaja promyshlennost’ – Metallurgical and Mining Industry, 2015, no. 1, pp. 13-16. (Rus.)