Silicon metal 3303 is a raw material commonly used in aluminum ingot production. The grade of silicon metal usually consists of four digits. The first digit "3" from left to right in "3303" means that the silicon content is not less than 99.3%; the second digit "3" means that the iron content is not more than 0.3%; the third digit "0" means that the aluminum content is not more than 0.03%; the fourth digit "3" means that the calcium content is not more than 0.03%.

Silicon metal 3303

chemical composition

Silicon Metal	Grade	Chemical Composition
		Si(%)	Impurity Content
		Si(%)	Fe(%)	Al(%)	Ca(%)	P(PPM)
	97	>97.0%	≤1.5	≤0.5	≤0.3
	553	>98.5%	≤0.5	≤0.5	≤0.3	-
	441	>99.0%	≤0.4	≤0.4	≤0.1
	3303	>99.3%	≤0.3	≤0.3	≤0.03	≤50
	2502	>99.5%	≤0.25	≤0.25	≤0.02	≤40
	2202	>99.5%	≤0.2	≤0.2	≤0.02	≤40
	421	>99.2%	≤0.4	≤0.2	≤0.1	-
	411	>99.2%	≤0.4	≤0.1	≤0.1	-

Production process

Raw material preparation:

Select high-grade silica and high-quality carbonaceous reducing agent (such as petroleum coke, charcoal, etc.) as the main raw materials to ensure that the purity and particle size of the raw materials meet the production requirements.

Electric furnace smelting:

Add the raw materials into the electric furnace in a certain proportion and smelt them at high temperature. By precisely controlling the temperature, current, voltage and other parameters of the electric furnace, the silica and the carbonaceous reducing agent undergo a reduction reaction to generate metallic silicon.

Refining and purification:

The smelted metallic silicon may contain some impurities and needs to be refined. Common refining methods include air blowing refining, flux refining, etc. These methods further remove impurities such as iron, aluminum, and calcium in metallic silicon, improve the purity of metallic silicon, and make it meet the requirements of the 3303 grade.

Casting:

After the refined silicon metal liquid reaches the specified temperature and composition, it is poured into a specific mold for casting and molding to make the required block or granular metallic silicon 3303 products.

Silicon metal 3303

Products Features

High purity:

It has a high purity, with a silicon content of 99.3% or more, which can provide a stable source of silicon for aluminum ingot production and help to accurately control the composition and properties of aluminum alloys.

Low impurity content:

The content of impurities such as iron, aluminum, and calcium is low, which can avoid the adverse effects caused by excessive impurities in the production process of aluminum ingots, such as reducing the strength, toughness, and corrosion resistance of aluminum alloys, which is conducive to improving the quality and performance of aluminum ingots.

Good chemical stability:

In the high temperature environment of aluminum ingot production, It can maintain relatively stable chemical properties and is not easy to react with other substances, ensuring the stability and controllability of the production process.

Uniform size:

Generally speaking, the silicon 3303 used for aluminum ingot production has uniform particle size, which helps to dissolve and diffuse evenly in the aluminum liquid, making the silicon element more evenly distributed in the aluminum alloy, thereby improving the consistency of the aluminum alloy performance.

silicon 3303