Numerical simulation of the erosion and the destruction of the refractories used in high temperature processes.

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04741
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26060:Metals production and resources production-related
• Research Institution: Waseda University
• Principal Investigator: Ito Kimihisa 早稲田大学, 理工学術院, 教授 (10159866)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 耐火物 / 溶損現象 / 高温プロセス / 粒子法 / 乾燥破壊 / 溶解モデル

Outline of Final Research Achievements

The simulation program for the dissolution and fracture phenomena of refractories was developed and the following results were obtained: 1) The simulation program for the dissolution of solids using the particle method was developed and compared with the results of a cold model experiment for the verification on the same scale, and it was confirmed that the simulator could sufficiently reproduce the experimental results. 2) A simulation program for the drying fracture phenomena of castable refractories using the particle method was developed. Compared with the verification experiment using a high-temperature drying cell, the developed simulator was able to sufficiently reproduce the crack propagation of CaCO3-water paste at high temperatures.

Free Research Field

金属生産工学

Academic Significance and Societal Importance of the Research Achievements

耐火物は様々な高温プロセスで用いられており，特に鉄鋼産業における使用量は莫大な量に上るため，耐火物の溶損防止や高寿命化を実現するためのツールとして，本研究成果は，省資源・省エネルギーに対して，大いに貢献できるものと考える。また，耐火物溶損プログラムの本体は，物質移動論に立脚した固体溶解シミュレータなので，耐火物に限らず，様々な固体物質の溶解挙動を3Dで再現できる。このため，その応用範囲は限りがない。また，ペーストの乾燥破壊現象は，元々複雑系物理の代表的な問題として，様々な研究者によって取り上げられており，本研究の成果は基礎的分野にも波及効果が期待される。