Description of Refining Slag

Refining slag refers to a product produced by mixing raw materials such as aluminum dross and limestone in specific proportions and particle sizes, then sintering the materials together at high temperatures, followed by crushing the sintered product into granules. Refining slag is supplied in three forms: pre-melted, sintered, and composite types.

Refining slag serves a three-in-one function for molten steel, which includes desulfurization, deoxidation, and arc suppression. It does not generate sulfur back-reversion phenomena and contributes to stabilizing the structure of steel products, thereby improving the quality of steel. It can be directly added without leaving residual impurities, reducing electrical consumption during refining. It also has excellent slag-washing effects and a significant adsorption effect on impurities.

Refining Slag Production

Specification of Refining Slag

Properties of Refining Slag

The primary components of refining slag include calcium aluminate, aluminum oxide, silicon oxide, calcium fluoride, magnesium oxide, etc. These metal ions combine to form a composite material composed of calcium oxide-calcium fluoride, calcium oxide-aluminum oxide, and calcium oxide-aluminum oxide-silicon oxide. Refining slag is an essential additive for the deoxidation and desulfurization processes in the steelmaking industry.

Characteristics of Refining Slag

1. Reasonable chemical composition, facilitating rapid slag formation and shortening the smelting time.
2. Due to quick slag formation, it reduces electrical consumption during refining.
3. Reduces the consumption of refractory materials in ladles and extends their service life.
4. Has a good desulfurization and deoxidation effect.
5. Because of its low melting point, it exhibits good adsorption of impurities during argon blowing in ladles and at the steelmaking tap hole.

Refining Slag Supplier

Refining slag is appreciated for its advantages such as uniform chemical composition, low melting point, fast melting, reduced refining power consumption, and shorter refining time. It has gained increasing attention in the steel industry and is currently one of the important steelmaking additives.

Refining Slag Usage

Before pouring the molten steel, refining slag is placed in the ladle. As the molten steel flows into the ladle from above, it undergoes vigorous mixing with the refining slag, which rapidly melts into the steel and then rises to the surface. Due to the strong reducing properties of refining slag, it possesses powerful deoxidation and desulfurization capabilities, removing oxygen and sulfur impurities from the molten steel. Currently, refining slag can achieve a desulfurization efficiency of over 85% and is an essential steelmaking additive.

Refining Slag Manufacturer-LSFerroalloy

LSFerroalloy can customize and produce metallurgical furnace materials of various specifications and indicators according to customer requirements.