Experiments on Removal of Hydrophilic Fi (1)

Improving the purity of molten steel during continuous casting is crucial for producing high-quality steel products. This study aimed to investigate the removal rate coefficient of hydrophilic particles from molten steel through bubbly flow, focusing specifically on the challenges associated with solid and liquid oxides. Gas injection, which generates bubbles expected to lift inclusions to the slag layer at the surface, was employed as the primary technique for inclusion removal. Existing literature suggests that solid oxides, such as aluminum inclusions, are effectively removed due to their poor wettability with molten steel, while liquid oxides are more difficult to eliminate. The removal efficiencies were quantitatively analyzed through experimental approaches that examined various parameters affecting the particle collection process, including bubble size and interaction probabilities. The findings reveal critical insights into the mechanistic understanding of particle removal rates in bubbly flow, underscoring the influence of bubble dynamics on the overall inclusion removal efficiency. The study contributes to the field of metallurgical engineering by providing essential data for optimizing processes aimed at enhancing the purity of molten steel, thereby supporting the production of superior steel products.