Calcium-silicon alloy is a composite alloy material composed mainly of silicon, calcium, iron and other trace elements. In the steelmaking industry, calcium-silicon alloy is mainly used as a composite deoxidiser and desulphuriser.
Compared with other steelmaking deoxidisers, the calcium in calcium-silicon alloy has a strong affinity for silicon and oxygen, and also a strong affinity for sulphur and nitrogen. Therefore, calcium-silicon alloy is a very suitable compound deoxidiser and desulphuriser. When steel is being made, adding the right amount of calcium-silicon alloy not only achieves a good deoxidisation effect, but also makes the deoxidised products float and discharge easily, quickly purifying the molten steel and improving the quality of the steel. Calcium silicon alloy can deeply deoxidise molten steel during steelmaking, achieving more thorough deoxidation and better results with the calcium element. It can improve the shape of inclusions in molten steel, making slag removal easier and more convenient. In terms of casting, the new calcium silicon alloy can improve the flow properties of molten iron, allowing sufficient chemical reactions between the elements.
