Desulfurization Reactor

The Desulfurization Reactor is a critical component of the Integrated Hot Metal Desulfurization and Slag Treatment System. It is a refractory-lined vessel designed to receive molten iron (hot metal) from the blast furnace. Within this reactor, desulfurizing agents (typically lime-based powders or magnesium) are injected into the molten metal bath. Through mechanical stirring (e.g., via a lance or impeller) or gas bubbling, the reagents are thoroughly mixed with the metal, promoting chemical reactions that convert dissolved sulfur into stable slag compounds. The resulting low-sulfur metal is then tapped for further processing, while the sulfur-rich slag is separated for treatment. Its design prioritizes high-temperature durability, efficient mixing, and controlled reaction kinetics to achieve precise sulfur removal targets.

Operates on the principle of chemical reaction and mass transfer. Desulfurizing reagents are injected into a bath of molten iron. Mechanical agitation (stirring) or inert gas purging creates turbulence, increasing the surface area contact between the reagent particles and the molten metal. This facilitates the reaction where sulfur (S) in the iron combines with the reagent (e.g., CaO or Mg) to form solid or gaseous compounds (e.g., CaS, MgS). These reaction products are then removed into a separate slag phase or off-gas stream, thereby reducing the sulfur content of the metal.