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Refining Slag

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 tem...

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

Refining Slag Production

Specification of Refining Slag

Chemical Composition CaO Al2O3 CaO+Al2O3 MgO SiO2 Fe2O3 TiO2 Water N
Content(%) 35.0

45.0

35.0

45.0

≥75.0 4.0

9.0

≤8.0 ≤2.0 ≤0.3 ≤0.5 ≤500ppm

Advantages of Refining Slag

• Rapid slag formation and shortening the smelting time

• Reduces electrical consumption

• Reduces the consumption of refractory materials

• Desulfurization and Deoxidation

• Low melting point

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.

Refining-Slag supplier

Refining Slag Supplier

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.

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