Materials for refractories

Elkem offers high quality microsilica, silicon powders and complementary products for the production of advanced refractory and ceramic products globally. Our products are backed by a highly competent staff for customer service, technical assistance and product development.


Amorphous silicon dioxide (silica) consisting of spherical primary particles (average diameter is 0.15 micron) and agglomerates of these (size up to 1 micron). Specific gravity is about 2.3 and spheres have no internal porosity. Specific surface area is in the range 15-30 m2/g

A range of global grades are available and generally classified according to purity; 971, HQ, 968, 955. Other grades are available for local markets.

Silicon powders

A wide variety of powders to suit customer requirements both with respect to chemistry and sizing. Si-NINE™ and Si-RG™ powders are carefully selected, crushed and milled metallurgical silicon.

SILGRAIN® product is a range of silicon powders produced by a proprietary hydrometallurgical process.

Complementary products

A range of specialty products designed to enhance rheological properties, reduce water demand, increase flow, control setting and dry-out in microsilica-containing castables, shotcrete and gunnite.

Technical service and product development

Well-equipped laboratories dedicated to the characterisation of microsilica and silicon. Application laboratory for refractories R&D and product development. Customer service laboratories are situated in Norway, India and China.