Theoretical and practical research on relationship between blast air condition and hearth activity in large blast furnace

被引：3

作者：

Dai, Bing ^{[1
,2
,3
]}

Long, Hong-ming ^{[1
,2
]}

Ji, Yi-long ^{[1
,2
]}

Rao, Jia-ting ^{[3
]}

Liu, Yun-cai ^{[4
]}

机构：

[1] Anhui Univ Technol, Minist Educ, Key Lab Met Emiss Reduct & Resources Recycling, Maanshan 243002, Peoples R China

[2] Anhui Univ Technol, Anhui Prov Key Lab Met Engn & Resources Recycling, Maanshan 243002, Peoples R China

[3] State Key Lab Vanadium & Titanium Resources Compr, Panzhihua 617000, Peoples R China

[4] Shougang Grp Co, Gen Engineer Off, Beijing 100041, Peoples R China

来源：

METALLURGICAL RESEARCH & TECHNOLOGY | 2020年 / 117卷 / 01期

关键词：

large blast furnace; hearth activity; blast air condition; blast air speed; blast air kinetic energy; tuyere raceway; blast air volume; tuyere area; stability; PR China;

D O I：

10.1051/metal/2020007

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

From the results calculated by theoretical derivations, it was found that the characteristics of tuyere raceway determined by the operation condition for blast air played a critical effect on the heart activity. The speed and kinetic energy of blast air should be proportional to the volume of blast furnace (BF), and the comprehensive optimization of air volume and tuyere which should vary with the quality of raw materials was essential. The calculation methods of air volume ratio and coefficient for different BFs were put forward. Moreover, the details on hearth activity recovery of a 4747 m(3) blast furnace in China were elaborated. Based on the extensive experience in blast furnace production, the various phenomena used to judge air speed and kinetic energy whether reasonable were discussed. In summary, hearth activity was closely related to the characteristics of BF raceway and reasonable air speed and kinetic energy could effectively improve the activity.

引用

页数：6

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