Abstract
Blast furnace tapping is one of the most important aspects of BF iron-making, a process during which the ideal state is for the molten iron to remain the invariant and the level of liquid to remain stable. However, due to the viscosity of molten iron, the liquid level will tilt to one side near the tap-hole, causing the iron flow field during blast furnace tapping to change with time. This research simulated two cases of horizontal and inclined molten iron liquid levels in the process of blast furnace tapping. This study also discusses different hearth erosion situations and explains the rationality of blast furnace large-scale trends from the perspective of molten iron liquid level stability.
Highlights
INTRODUCTIONDamage to a blast furnace caused by erosion directly influences the life of the hearth and blast furnace erosion has a bearing on the hot metal flow state (Xu, 2001)
The life of a blast furnace is an important factor affecting the cost of production
Damage to a blast furnace caused by erosion directly influences the life of the hearth and blast furnace erosion has a bearing on the hot metal flow state (Xu, 2001)
Summary
Damage to a blast furnace caused by erosion directly influences the life of the hearth and blast furnace erosion has a bearing on the hot metal flow state (Xu, 2001). Due to molten iron viscosity, the liquid level will tilt to one side near the tap-hole, causing the iron flow field to change over time during blast furnace tapping. The state of molten iron flow on the blast furnace hearth and erosion conditions caused by the inclination of the iron plane during blast furnace tapping is important to the relationship between furnace cylinder size and hearth life. Corresponding Author: Hong-Wei Guo, University of Science and Technology Beijing, Beijing 100083, China
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