Metall. Res. Technol.
Volume 117, Number 1, 2020
|Number of page(s)||6|
|Published online||19 February 2020|
Theoretical and practical research on relationship between blast air condition and hearth activity in large blast furnace
Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Anhui University of Technology, Ministry of Education,
Maanshan, PR China
2 Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, 243002 Maanshan, PR China
3 State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, 617000 Panzhihua, PR China
4 General Engineer Office, Shougang Group Co., 100041 Beijing, PR China
* e-mail: firstname.lastname@example.org
Accepted: 29 January 2020
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 m3 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.
Key words: 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
© EDP Sciences, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.