Products Description
Silica-calcium-manganese alloy is a commonly used additive for deoxidation and desulphurization of molten steel. The standard silica-calcium-manganese alloy contains 16-20% Ca, 14-18% Mn, and 53-59% Si, and the rest is Fe and C, S, P and other residual impurities. Obviously, the existing silica-calcium-manganese alloy is a silica-calcium-manganese alloy with high silicon and low manganese. Although the deoxidation capacity of silicon is stronger than that of manganese, for many steel grades, the residual amount of silicon is strictly controlled. If silicon and manganese are used together, the deoxidation effect of molten steel will be greatly improved. This is because the product of their joint deoxidation is manganese silicate, and the activity of silicon in manganese silicate is much lower than that of silicon in silicon dioxide, the only product of silicon deoxidation. However, the practice suggests that manganese improves the deoxidation effect of silicon, and decreases with the increase of silicon content. Therefore, it is very necessary to make scientific and reasonable allocation of the element content of the existing silicon calcium manganese alloy, reduce the silicon content and increase the manganese content under the condition of basically stable calcium content, so as to improve the comprehensive technical and economic indicators of the silicon calcium manganese alloy.
Products Content
The percentage content (weight %) of silica-calcium-manganese alloy is silicon 25-50; Calcium 10-25; Manganese 20-45; Phosphorus, sulfur and other unavoidable impurities sum ≤0.20;
The percentage content (weight %) of silicon calcium-manganese alloy is silicon 28-32; Calcium 10-15; Manganese 28-42; Phosphorus, sulfur and other unavoidable impurities sum ≤0.20;
Another typical percentage content (% by weight) of silicon-calcium-manganese alloys is silicon 40-50; Calcium 12-14; Manganese 20-28; Phosphorus, sulfur and other unavoidable impurities sum ≤0.20.
The percentage content (weight %) of silicon calcium-manganese alloy is silicon 28%; Calcium 14%; Manganese 40%; The sum of unavoidable impurities such as phosphorus and sulfur < 0.12; Iron margin.Compared with the silica-calcium alloy containing 55% silicon and 28% calcium, it can be reduced by about 15-20% under the same test conditions. The use of silicon calcium manganese alloy has obvious economic benefits. And because the silicon calcium manganese alloy does not powder, it creates a good operating environment and treatment conditions for the off-furnace refining of the steelmaking industry.
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