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Description of Calcium Silicon

Calcium silicon (CaSi) is a silicon-calcium alloy made from silicon dioxide, lime, and coke in a strong reducing atmosphere at 1500-1800 degrees. Its main components are silicon and calcium, and it also contains impurities such as iron, aluminum, carbon, sulfur, and phosphorus in varying amounts. It is used as a calcium additive, deoxidizer, desulfurizer, and denaturant for non-metallic inclusions in the iron and steel industry. Used as an inoculant and denaturant in the cast iron industry.

Calcium Silicon Model

Common Size

Natural block, processed block is also called particle size block (10-100mm)

Grain: 1-3mm, 3-8mm, 0.2-1mm,

Powder: 0-2mm, 0-200 mesh.

Note: Calcium silicon products are strictly prohibited from water.

Application of Calcium Silicon

1. Since calcium has a strong affinity with oxygen, sulfur, hydrogen, nitrogen, carbon, etc. in molten steel, silicon-calcium alloys are mainly used for deoxidation, degassing, and sulfur fixation in molten steel.

2. Calcium silicon alloy has a strong exothermic effect after being added to molten steel. Calcium turns into calcium vapor in molten steel, which has a stirring effect on molten steel and is beneficial to the floating of non-metallic inclusions. After the silicon-calcium alloy is deoxidized, non-metallic inclusions with large particles and easy to float are produced.

3. The shape and performance of non-metallic inclusions also change at the same time. Therefore, silicon-calcium alloys are used to produce clean steel, low-oxygen and low-sulfur high-quality steel and extremely low-oxygen and low-sulfur special performance steel.

4.The addition of CaSi alloy can eliminate nodules in the ladle nozzle of molten steel with aluminum as the final deoxidizer, and blockage of continuous casting and ironmaking tundish nozzles. In the out-of-furnace refining technology of steel, silicon-calcium powder or core wire is used for deoxidation and desulfurization to reduce the oxygen and sulfur content in steel to a very low level; it can also control the form of sulfide in steel and improve the utilization of calcium Rate.

5. In the production of cast iron, in addition to deoxidation and purification, silicon-calcium also plays an inoculating role, which helps to form fine-grained or spherical graphite; makes the graphite in gray cast iron evenly distributed and reduces the tendency of whitening; and can increase silicon and desulfurize, Improve cast iron quality.

About the company

Anyang Lishi Industrial Co., Ltd. is an enterprise specializing in the production of silicon calcium products. We have high-quality product quality, strict production management, and scientific testing methods. We can also customize products according to customers' requirements. Welcome to contact us!