The R&D For 3D Erosion Diagnosis And Calculation System Of Blast Furnace Hearth Lining

Blast furnace has played a very important role in the world steel industry as the major equipment in ironmaking. Blast furnace longevity can not only improve the economic benefits of enterprises, but also guarantee the workers’security. Therefore, it has been a further goal to extend and predict the blast furnace life for researchers.The blast furnace hearth can be damaged for dozens of reasons during the period of blast furnace’s working. It may lead to serious accident if the erosion of the blast furnace hearth reaches at a certain level. So, predicting the condition of the blast furnace hearth is very important. The prediction of blast furnace lining erosion belongs to an inverse heat conduction problem. Three-dimensional model of lining erosion can reflect the actual situation of the blast furnace best. Pro/ENGINEER and ANSYS software are combined in this paper to design the calculating system based on the three-dimensional way. Main contents:1. On the basis of read literature about inverse heat conduction problem and one-dimensional, multi-dimensional heat transfer theory, summarizes the main diagnostic methods of blast furnace hearth lining erosion, reviews the basic types of blast furnace hearth lining erosion analysis and its calculation principle.2. Tthrough the study of the secondary development of Pro/E software, realization blast furnace hearth 3D parametric modeling by erosion boundary point coordinate data. Meanwhile, realize the docking directly ANSYS software after modeling, carry out the three-dimensional heat transfer erosion calculation.3. Using ANSYS APDL language development special macro files, realization the hearth erosion analyze calculation. Compiled the special erosion analysis macro files of "one point temperature measurement+cooling conditions" and "two points temperature measurement". First according to three-dimensional erosion boundary surface structure initial coordinate of hearth,creating 3D initial model of hearth; do heat transfer calculation, check and ratify the measured temperature and the simulation temperature deviation, according to the temperature deviation mobile tectonic point, update coordinate data; then according to the new structure point coordinate data reconstruction the model, And then do heat transfer calculation of hearth again, until satisfy the temperature precision determination conditions, formation of the blast furnace hearth lining erosion diagnosis three-dimensional inverse solution technique.4. R & Dof the blast furnace hearth lining three-dimensional erosion diagnosis and calculate system do erosion diagnosis on "elephant foot type" and "pot bottom type" of these two kinds of typical lining erosion morphology, get satisfy the temperature accuracy requirement erosion morphology and lined with residual thickness data, verify the feasibility of the computing system and the applicability of the hearth lining erosion morphology diagnosis.