Development of New Charging Technique for Mixing Coke in Ore Layer at Blast Furnace with Center Feed Type Bell-less Top

被引：2

作者：

Kashihara, Yusuke ^{[1
]}

Iwai, Yuki ^{[1
]}

Ishiwata, Natsuo ^{[1
]}

Oyama, Nobuyuki ^{[1
]}

Matsuno, Hidetoshi ^{[1
]}

Horikoshi, Hiroyuki ^{[2
]}

Yamamoto, Koji ^{[2
]}

Kuwabara, Minoru ^{[2
]}

机构：

[1] JFE Steel Corp, Steel Res Lab, 1 Kokan Cho, Fukuyama, Hiroshima 7218510, Japan

[2] JFE Steel Corp, East Japan Works Keihin, Fukuyama, Hiroshima 7218510, Japan

来源：

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 2016年 / 102卷 / 01期

关键词：

blast furnace; coke mixed charging; burden distribution; small coke; mixed coke ratio; permeability; bell-less top; GAS-FLOW; EFFICIENCY; OPERATION;

D O I：

10.2355/tetsutohagane.TETSU-2015-055

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Improved permeability and increased gas utilization have been desired in order to achieve low coke rate operation of blast furnace. Coke mixed charging in the ore layer is one of the effective measures for realizing these improvements. A new charging technique for mixing small coke in the ore layer at a blast furnace with a center feed type bell-less top was developed and investigated in an experiment with a 1/18.8 scale model of an actual blast furnace at JFE Steel. By the new charging technique that small coke was charged in the determined port of the upper bunker before ore was charged in the upper bunker, discharge pattern of the mixed small coke discharged from the bell-less top was improved, and the radial distribution of mixed small coke ratio at the furnace top after the mixed materials were charged in the blast furnace was also improved. The new charging technique was applied to an actual blast furnace at JFE Steel, and improvement of gas permeability and decrease in coke rate were confirmed.

引用

页码：9 / 16

页数：8

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