Blast furnace hearth erosion modelling based on the dataset approach

Abstract

To monitor and diagnose the erosion status of the blast furnace hearth lining during operation, this study utilises the high precision and rapid processing capabilities of ANSYS finite element software for secondary development. It integrates temperature data from various thermocouples at the blast furnace hearth bottom with samples for erosion thickness calculation, developing a model based on extensive datasets of erosion status. This model can display isotherms for any user-specified temperature and combines calculated longitudinal profile data to create a three-dimensional representation of the hearth bottom through the secondary development of Solidworks 3D modeling software. This flexibility allows for an arbitrary view of the blast furnace's erosion state. This method significantly enhances both the speed and accuracy of calculations compared to other erosion models. It addresses the challenge of constructing a reliable heat transfer model for the furnace hearth and bottom when numerous thermocouples fail in the later stages of furnace operation. By improving the model's applicability throughout the entire lifecycle of the blast furnace, it ensures real-time feedback to users by continuously calculating the erosion status.