VAICON Stirring

The VAICON Stirring system is a cutting-edge solution installed in LD converters (also known as basic oxygen furnace (BOF)) enhancing bath mixing in the LD converter steelmaking process. This innovative technology addresses the significant challenge of achieving uniform chemical composition and temperature in liquid steel, which is often hindered by inhomogeneities during the oxygen blow in top-blown converters. Particularly, the relatively dead zone beneath the jet cavity of the converter poses a challenge. By implementing VAICON Stirring, steelmakers can achieve superior results, making the process more efficient and the final product more consistent.

In the world of steelmaking, achieving uniformity is crucial. The industry has turned to LD converters equipped with additional bottom stirring mechanisms to address this issue. This approach combines a top-blowing lance with bottom stirring, significantly enhancing the mixing process. The necessity for bottom stirring for LD converters is crucial for producing high-quality steel grades economically. Ensuring the proper functionality of the stirring system throughout the entire campaign of the LD converter is essential.

VAICON Stirring improves bath mixing in the LD converter process, resulting in better steel quality, homogeneity, and lower consumption. The process involves injecting inert gas into the bath through stirring elements located at the converter's bottom. The advanced valve stand from Primetals Technologies allows for precise control of gas flow to each element, ensuring balanced wear and integrating safety measures for consistent pressure and gas supply. By implementing the VAICON Stirring system, steelmakers can achieve superior results, making the process more efficient and the final product more consistent.

Benefits of the VAICON Stirring

• Improved steel quality and reduced consumption figures thanks to better stirring of the bath
• Single line control for high stirrer availability and long lifetime
• Advanced combined pressure and flow control mechanism
• Pre-assembled in a container for short installation time
• Can be combined with Primetals Technologies Process Control System for fully automated control