Analysis of Multi-Zone Reaction Mechanisms in BOF Steelmaking and Comprehensive Simulation

Area of Science:

• Metallurgical Engineering
• Chemical Engineering
• Process Control

Background:

• Basic Oxygen Furnace (BOF) steelmaking relies on complex reactions, posing challenges for precise human-controlled accuracy.
• Developing advanced simulation models is essential for intelligent steelmaking and improved process control.

Purpose of the Study:

• To analyze physical and chemical behaviors in BOF reaction zones.
• To establish a comprehensive mechanism model for BOF steelmaking.
• To simulate and validate metallurgical reactions for enhanced process intelligence.

Main Methods:

• Analysis of reaction zones under production conditions using multi-zone reaction theory.
• Development of a comprehensive BOF steelmaking mechanism model.
• Integrated simulation of metallurgical reactions using FactSage thermodynamic software.
• Model validation against actual production data.

Main Results:

• The comprehensive model accurately simulates metallurgical reactions in BOF steelmaking.
• Relative deviation for cumulative decarburization rate is within -0.66% to 1.68%.
• Absolute deviation for calculated carbon content curve is less than 0.12% compared to actual data.

Conclusions:

• The developed model effectively clarifies variation patterns of key BOF process parameters.
• This research significantly contributes to advancing the intelligence of BOF steelmaking.
• The validated model provides a foundation for improved control and optimization in steel production.