What is silicon powder?

Silicon powder, also known as micronized silicon, is used for many different applications.

Silicon powder: Enhancing the performance of your products

Metallurgical silicon is typically produced in a size of 0–100 mm, but for most applications further size reduction is required. The optimum particle size depends strongly on the final application. This means that, in many cases, some optimization work is required to find the most cost-competitive solution. Silicon powder is produced by crushing, milling and classifying silicon material to obtain the required particle size.

Silicon powder can be produced with a top cut for customers that only need to control the amount of coarse particles. It can also be produced with a top and bottom cut for customers that need to control both the amount of coarse and fine particles. The shape of the particles can also, to some extent, be altered by the technology used at the micronizing stage. Contamination free micronizing is also possible for customers that cannot accept any at all contamination from the milling media.

Micronized silicon with top cut can be supplied with a top cut of 8 microns and up. Silicon with bottom and top cut can be supplied with a bottom cut of very few microns and up. The cost will depend largely on production speed and yield.

A raw material that enables a vast range of customers to achieve their goals

Elkem offers a range of metallurgical silicon powders that are carefully selected, crushed, milled to customer specifications and needs. Different purities and sizes are therefore available, to satisfy customer processing requirements and application needs. Products with customized chemistry and sizing can be produced on request.

Our vast range of products to solve customer requirements

Our silicon powder products include the Elkem Si-NINE™ and Si-RG™ and SILGRAIN^® products, the latter produced using a proprietary hydrometallurgical process.

Elkem Si-NINE™

High quality metallurgical silicon is carefully selected, crushed, milled and classified to provide Elkem Si-NINE™ silicon powders.
Product data sheet

Elkem Si-PRIME™

High quality metallurgical silicon is carefully selected, crushed, jet milled and classified to provide Elkem Si-PRIME™ silicon powder.
Product data sheet

Elkem Si-RG™ 98

High quality metallurgical silicon is selected, crushed and milled to provide different grades of Elkem Si-RG™ 98 silicon powders.
Product data sheet

Elkem Si-RG™ 75

High quality Si-based ferroalloy is selected, crushed and milled to produce our Elkem Si-RG™ 75 powders.
Product data sheet

Elkem Si-99 Powder

High quality metallurgical silicon is carefully selected, crushed, jet milled and classified to provide Elkem Si-99 Powder of finer sizes.
Product data sheet

Silgrain® HQ MicronCut

High quality metallurgical silicon with low content of impurities, jet milled and classified to provide Elkem Silgrain® silicon powders.
Product data sheet

Silgrain^® MicronCut

High quality metallurgical silicon powders with low content of impurities, milled and classified to provide Silgrain® Microncut or Silgrain® HQ Microncut.
Product data sheet

Beyond our products, a full offer of services from our expert staff

Our products are backed by a highly competent staff providing customer services, technical assistance and product development advice. For example, many of our customers work closely with Elkem to test different specifications upstream. Elkem also provides samples and small batches to make sure that these products are perfectly adapted before delivery of larger quantities.

Once the product is custom-made to meet specifications, Elkem micronized powders are standard packed in 'small bags' (20–25 kg) or 'big bags' (1000 kg).

Sustainability at Elkem

To learn more about our sustainability initiatives, check our webpage.