Calcium Silicon

Specifications: CaSi3060, CaSi2855, CaSi2860 and so on.

Shape: CaSi Lump/Grain/Powder

Usage: Steelmaking

Particle size: 3-10mm 10-80mm 150-200mm or customized

Packing: Ton Bags

What Is Calcium Silicon

Calcium Silicon is an alloy composed of two elements: silicon and calcium. It has a calcium content of 22 to 35% and a silicon content of 60 to 65%. It also contains impurities such as iron, aluminum, carbon, sulfur and phosphorus in varying amounts.

Calcium silicon is available in various forms, including lumps, granules, and as a cored wire for more controlled and efficient alloying.

As far as calcium silicon alloy is concerned, 80% of the current silicon calcium alloy is added to the steel in the form of silicon calcium cored wire. CaSi Alloy in the form of cored wire feed into the steel, the utilization rate of calcium can reach more than 12%, which is 1.5 times that of silicon calcium block when adding liquid steel.

Calcium Silicon Specifications

Specification	Calcium Silicon Chemical Component
	Ca	Si	Al	C	P	S
	>=	Si	<=
Ca30Si60	30	55-65	0.3	0.1	0.035	0.02
Ca28Si55	28	55-60	0.3	0.1	0.04	0.02

Both size and packing can be customized as clients’ requests

About Calcium Silicon Packing And Delivery

The common package is 1Mt/Bag. It can also be packaged according to the user’s requirements.

The minimum order quantity is 20-24MT (But we also accept LCL).

We will choose the most economical and convenient port delivery for you. It also tracks in real time, providing you with the latest logistics news so you can see the progress.

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How To Produce Calcium Silicon

There are three kinds of production methods of silicon calcium alloy: mixed feeding method, layered feeding method and two-step method.

Mixed feeding method

The mixed feed method is to add silica, lime and coke to the reduction furnace. CaO and SiO2 are simultaneously reduced with carbon to calcium-silicon alloy. The reaction is caO+3SiO+7c=Casi2+Si+7CO

The disadvantage of this method is that calcium oxide and silicon dioxide come into contact to form a low melting point silicate. It is difficult to reduce silicon and calcium from silicates. Based on this situation, the layered feeding method is developed.

Layer feeding method

The purpose of this method is to reduce the contact between calcium oxide and silicon dioxide to reduce the formation reaction of Cao-siO2.

The layered feeding method is to first add lime and coke near the electrode, and melt the CaO to produce CaC2 as much as possible. Silica is then mixed with the remaining carbon and added to the furnace to produce a calcium-silicon alloy.

Two-step method

Silicon calcium and gold are first produced in an electric furnace. Then calcium silicon and gold are produced in the second circuit using calcium carbide, silica and carbonaceous reducing agent as raw materials.

The main advantage of this production method is that it can produce silicon calcium and gold with high calcium content. And the operation is relatively simple. Two electric furnaces can use calcium carbide to produce calcium silicon and gold.

In China, the mixed feeding method and layered feeding method are generally used to produce calcium silicon Alloy. Germany, France and other countries use the two-step process to produce silicon calcium .

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Characteristics of Calcium Silicon

High temperature resistance. It can still maintain good stability under high temperature conditions and is not easy to melt and oxidize.

Oxidation resistance, can effectively prevent the oxidation of metal materials under high temperature conditions.

Good vulcanization effect, can effectively remove impurities in molten steel, improve the quality of steel.

Low melting point,easy to melt and process.

Good plasticity, can form different shapes of products through heating and forging processes.

Properties Of Calcium Silicon

Calcium silicon (CaSi) finds various applications in the steelmaking and metallurgical industries due to its deoxidizing, desulfurizing, and alloying properties.

Physical State：Solid

Colour：Metallic Gray

Odour：Odourless

Melting Point：900-1000℃

Specific Gravity：2.5g/Cm³

Main Content：Ca22-35%, Si60-65%, Fe<6%

What Is The Use Of Calcium Silicon

Calcium silicon is used as a deoxidizer in steelmaking.

CaSi alloy has a strong reducing capacity and is generally used as a deoxidizer for high-quality steel. Because calcium is very active at steelmaking temperature, the effect is not stable. Therefore, when used as a deoxidizer, SiCaBa or SiAlBaCa are often used.

Calcium silicon is used as a desulfurizer in steelmaking.

Calcium silicon is effective in reducing sulfur content in molten steel. Desulfurization helps achieve lower sulfur levels in the steel, improving its ductility, toughness, and other mechanical properties.

Calcium silicon can be used as inoculant in the production of cast iron.

In the production of cast iron, calcium silicon can be used as an inoculant to promote the formation of graphite. It influences the structure and properties of the cast iron, improving its mechanical

High Purity Calcium Silicon From Foosoon Company