company news about Silicon calcium alloy production

Silicon calcium alloy is an alloy composed of silicon and calcium, typically containing between 28% and 35% calcium and 55% to 65% silicon, depending on the intended application. It is used as a deoxidizer and desulfurizer in the production of steel and other ferrous alloys, as well as a nodulizer in the production of ductile iron. Here are the general steps involved in the production of silicon calcium alloy:

1. Raw material preparation: The raw materials, such as quartz, coke, calcium carbonate, and other additives, are first crushed and screened to the desired size.

2. Smelting: The prepared raw materials are then mixed and charged into an electric arc furnace, where they are melted at a temperature between 1500°C and 1800°C.

3. Alloying: Once the raw materials are melted, calcium is added to the furnace as a solid alloy to reduce the silicon and increase the calcium content to the desired level.

4. Refining: The molten alloy is then refined to remove impurities and excess oxygen and sulfur using techniques such as argon bubbling or vacuum degassing.

5. Casting: After refining, the molten alloy is cast into molds or solidified on a continuous casting machine to form the desired shape and size.