Development of permeability control technology for soften and molden packed bed in blast furnace using 3D modeling

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K15331
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 26060:Metals production and resources production-related
• Research Institution: Tohoku University
• Principal Investigator: Ishihara Shingo 東北大学, 多元物質科学研究所, 助教 (40760301)
• Project Period (FY): 2021-03-01 – 2023-03-31
• Keywords: 高炉 / シミュレーション / ADEM / SPH / 鉱石 / 相変化 / 粉化 / 軟化溶融

Outline of Final Research Achievements

For stable and efficient operation of the blast furnace process, we have developed a simulation model to analyze the particle behavior with softening and melting that affects the gas flow in the furnace. ADEM (Advanced Discrete Element Method) was used to represent the solid state and softening process, and SPH (Smoothed Particle Hydrodynamics) was used to represent the melt. The coupling model was developed. The model was validated by experimentally observing the melting behavior of a single ore and reproducing the behavior by simulation. The model enables us to analyze the structural change of the packing layer under high-temperature loading.

Free Research Field

粉体工学

Academic Significance and Societal Importance of the Research Achievements

本研究で開発したADEM-SPHカップリングモデルを用いることで、軟化・溶融を伴う複雑な粒子挙動の解析が可能となり、炉内融着帯近傍での充填層構造変化や閉塞現象の予測によって、高炉プロセスの安定化、省エネルギー化に繋がることが予想される。莫大なエネルギーを消費している鉄鋼業の高効率化は、エネルギー削減による持続可能な社会の創成へ貢献するだけでなく、二酸化炭素排出量の削減による地球環境問題の解決にも寄与することが考えられる。