Silicon Metal Powder 98 325mesh

325-mesh (approximately 45 micrometers) silicon metal powder is finer than 200-mesh. This fineness offers two main advantages:

Fast reaction: When used as a raw material for organosilicon, it reacts more fully with chloromethane in a fluidized bed, resulting in higher production efficiency.

Good binding: When used in refractory materials, the fine powder fills the gaps in the aggregate, resulting in a denser and stronger product.

Our 98% grade has a consistently high silicon content (above 98%) and well-controlled iron, aluminum, and calcium impurities, making it a commonly used raw material for organosilicon monomers, refractory binders, and ceramic products.

For organosilicon production: Using 325-mesh powder results in a fast reaction rate and high conversion rate in a fluidized bed. Too coarse a powder leads to incomplete reaction; too fine a powder is easily carried away by the airflow, resulting in waste.

For refractory materials: Using 325-mesh powder as a binder fills the gaps between large particles (e.g., 3-5mm), resulting in denser bricks with fewer pores and higher strength.

For powder metallurgy: Some customers use 325-mesh silicon powder as an additive, requiring fine powder that can be evenly distributed in the matrix.

The 325-mesh silicon metal powder we supply is mainly divided into the following purity grades. The 98% grade is the most commonly used 325-mesh powder and offers excellent value for money.

(We also have other higher purity grades, such as silicon metal 3303 and silicon metal 2202, but if you are buying the 98% grade, the one above is the most suitable.)

① Organosilicon Chemical Industry

200 mesh silicon powder is the basic raw material for silicone oil, silicone rubber and silicone resin. Its moderate particle size maintains stable reaction speed. Low calcium content protects catalysts from deactivation, ensuring continuous production of methyl chlorosilane and other intermediates.

② Metallurgical Casting Industry

Used as deoxidizer and alloy additive for carbon steel and low-alloy steel. It improves steel hardenability and mechanical properties. When applied to cast iron, it refines grains and reduces shrinkage defects, raising casting yield by over 10%.

③ Refractory & High-temperature Materials

Added to refractory bricks and kiln linings. It enhances high-temperature resistance, wear and oxidation resistance, extending the service life of industrial kilns by 2–3 times.

④ Electronic & Photovoltaic Industry

Further processed into monocrystalline silicon and silicon wafers for integrated circuits and electronic components. Also used for primary purification of polysilicon for solar cells.

⑤ Special Industrial Fields

Suitable for pyrotechnic materials and special chemical preparations, relying on its stable calorific value and chemical properties.

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