TY - JOUR
T1 - Experimental Study of Blast Furnace Hearth Drainage Based on Image Analysis
AU - Liu, Weiqiang
AU - Shao, Lei
AU - Saxén, Henrik
N1 - Funding Information:
This work was carried out with support from the Åbo Akademi Foundation, and this funding is gratefully acknowledged. The author (L.S.) wishes to thank the National Natural Science Foundation of China (grant 51604068) for providing financial support for this work.
Funding Information:
This work was carried out with support from the ?bo Akademi Foundation, and this funding is gratefully acknowledged. The author (L.S.) wishes to thank the National Natural Science Foundation of China (grant 51604068) for providing financial support for this work.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/5/22
Y1 - 2021/5/22
N2 - A smooth hearth drainage is one of the key requirements for maintaining an efficient blast furnace operation. For achieving this, it is necessary to understand the hearth drainage behavior and the effect of related process parameters. To investigate the drainage, a set of experiments is conducted in a 2D Hele−Shaw model, where the influence of the initial accumulated amount of molten liquids (iron and slag), blast pressure, and slag viscosity on the drainage behavior is studied using water and oil as liquids. To quantify the findings, an image analysis-based algorithm is applied to extract drainage information that is used to analyze the effect of the mentioned process factors on the evolution of the liquid levels and volumes, flow rates, share oil in the outflow, and angle of the interfaces at the outlet. Herein, the implications of the results for the operation of the blast furnace hearth are discussed.
AB - A smooth hearth drainage is one of the key requirements for maintaining an efficient blast furnace operation. For achieving this, it is necessary to understand the hearth drainage behavior and the effect of related process parameters. To investigate the drainage, a set of experiments is conducted in a 2D Hele−Shaw model, where the influence of the initial accumulated amount of molten liquids (iron and slag), blast pressure, and slag viscosity on the drainage behavior is studied using water and oil as liquids. To quantify the findings, an image analysis-based algorithm is applied to extract drainage information that is used to analyze the effect of the mentioned process factors on the evolution of the liquid levels and volumes, flow rates, share oil in the outflow, and angle of the interfaces at the outlet. Herein, the implications of the results for the operation of the blast furnace hearth are discussed.
KW - blast furnaces
KW - hearth drainage
KW - image analyses
KW - iron and slag flow
UR - http://www.scopus.com/inward/record.url?scp=85107372266&partnerID=8YFLogxK
U2 - 10.1002/srin.202100142
DO - 10.1002/srin.202100142
M3 - Article
AN - SCOPUS:85107372266
SN - 1611-3683
VL - 92
JO - Steel Research International
JF - Steel Research International
IS - 10
M1 - 2100142
ER -