325 mesh means that the powder is screened through a 325 mesh screen, and the screen aperture is about 44 microns. The particle diameter in the powder is generally below 44 microns. 325 mesh silicon metal powder has a finer size and is suitable for application scenarios with high requirements for powder fineness.

325 mesh silicon metal powder

Core Performance Advantages

High Purity:

A 98% silicon content ensures low impurity levels (such as iron, aluminum, and calcium) in the product, minimizing the negative impact of impurities on subsequent production processes and final product performance. This makes it suitable for industrial applications requiring high raw material purity. For example, in the production of precision alloys, this can prevent the degradation of alloy properties caused by impurities.

Fine and Uniform Size:

The 325 mesh size (approximately 44 microns) gives the powder a large surface area, which not only enhances its chemical reactivity, allowing it to participate more quickly and fully in various reactions, but also improves mixing uniformity with other materials. In fields such as powder metallurgy and coatings manufacturing, this characteristic helps improve product density and performance stability.

Excellent Thermal and Electrical Conductivity:

As a silicon metal product, it exhibits excellent thermal and electrical conductivity, meeting functional requirements and ensuring proper function in applications such as electronic components and thermal conductive materials.

Moderate Chemical Stability:

At room temperature, the powder maintains good chemical stability and is not prone to violent reactions with air or water. However, at high temperatures or under specific conditions, it can react with various elements, such as oxygen and chlorine, exhibiting moderate chemical activity, adapting to the requirements of various industrial processes.

Silicon metal powder

chemical composition

Silicon Metal Powder	Size	Chemical Composition %
Silicon Metal Powder	Size	Si	Fe	Al	Ca
Chemical Industry	Si-(20-120 mesh)	99.0	0.4	0.4	0.1
	Si-(30-140 mesh)	99.0	0.4	0.4	0.1
	Si-(40-160 mesh)	99.0	0.4	0.4	0.1
	Si-(40-280 mesh)	99.0	0.4	0.4	0.1
	Si-(40-325 mesh)	99.0	0.4	0.4	0.1
Resistant Material	150 mesh	98.5	0.5	0.5	0.3
	200 mesh	98.5	0.5	0.5	0.3
	325 mesh	98.5	0.5	0.5	0.3
	400 mesh	98.5	0.5	0.5	0.3
	500 mesh	98.5	0.5	0.5	0.3
Off Grade	200 mesh 325mesh	97	≤3.0%

Application in metallurgical casting industry

Silicon metal powder has also been widely used in the metallurgical casting industry. When steelmaking, silicon metal powder can be used as a deoxidizer, alloy additive, etc., and the effect is very significant. At the same time, in the production of castings Medium silicon metal powder can also be used as an inoculant.

Production and Handling

Production process:

Silicon metal powder is generally extracted from silica by high temperature arc furnace method or reduction method. The powder is sieved during the production process to achieve the required size.

Handling and Storage:

It should be stored in a dry, sealed environment to prevent moisture and oxidation. Appropriate protective equipment such as masks and gloves should be worn when handling to avoid dust inhalation or skin contact.

Silicon metal is washed, selected, ground, and processed into fine powder below 100 mesh. According to the content, it can be divided into 92%, 95%, 97%, 98% and other quality standards. It is cheap. In the process of producing refractory materials, different specifications can be selected according to the requirements of refractory products, thereby greatly reducing the cost of refractory products.