Optimization of high alumina slag practice in blast furnace ironmaking: an industrial approach (PART 1: fundamental aspects)

被引：2

作者：

Hazra, Sujan ^{[1
]}

Pal, Snehanshu ^{[2
]}

Biswajeet, Devi Dutta ^{[2
]}

Sahoo, Manisha ^{[1
]}

Tarachand, Garwa Sunny ^{[2
]}

Bhattacharyya, Debanjana ^{[3
]}

Nag, Samik ^{[1
]}

Seetharaman, Seshadri ^{[4
]}

机构：

[1] Tata Steel, Jamshedpur 831001, Jharkhand, India

[2] Natl Inst Technol Rourkela, Dept Met & Mat Engn, Rourkela, Odisha, India

[3] Natl Inst Technol Rourkela, Math Dept, Rourkela, Odisha, India

[4] KTH Royal Inst Technol, Dept Mat Sci & Engn, Stockholm, Sweden

来源：

IRONMAKING & STEELMAKING | 2023年 / 50卷 / 08期

关键词：

Blast furnace; high alumina slag; viscosity; liquidus temperature; ironmaking; alumina anomaly; additives; flow characteristics; IRON-ORE SLIME; HIGH AL2O3; SIO2-CAO-AL2O3; SLAG; VISCOSITY MODEL; ROTATING BOB; LOW-GRADE; BEHAVIOR; BASICITY; RATIO; MGO;

D O I：

10.1080/03019233.2023.2210901

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The productivity of the blast furnace Ironmaking process is significantly dependent on the slag chemistry. The presence of compounds like Al2O3 in high quantities can make the hearth slag highly viscous and difficult to tap. The objective of part-1 of this study is to provide a comprehensive analysis of the role of high alumina (Al2O3 > 15%) compositions in the blast furnace slags. Slag viscosity, liquidus temperature, activation energy, etc., are critically reviewed with respective solutions to operate under the desired conditions. Flow parameters of the slag are examined to understand the melting-softening phenomena which directly affect the slag tap-to-tap time. The addition of certain additives to the slag system has also been studied with the aim to improve the target properties of the slag. A range of slag compositions and their optimization techniques are discussed in this part to provide greater insight into the topic.

引用

页码：1124 / 1137

页数：14

共 108 条

[1] Means to cope with the higher alumina burden in the blast furnace [J].