The German company RW silicium GmbH is a manufacturer of metallurgical silicon. The silver coloured semi-metal is generated in a process whereby quartz and carbon are converted in electric arc furnaces. It is used in the chemical industry as a basic element for silicione chemistry, microelectronics and solar energy and furthermore it is utilized as an alloying metal in aluminium foundries.
Amorphous silicon dioxide (mikrosilica) is also obtained as a by-product during the manufacturing process. The so-called RW-Füller is used either as an uncompacted, high-grade microfiller - or compacted as RW-Compasil - in ceramic and refractory products as well as in fibre cement and special concretes.
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Since 1916, Graphit Kropfmühl and its global production sites have been synonymous with outstanding raw materials expertise. Innovation, market proximity and an absolutely customer-centric approach have helped us become a trend-setting graphite refiner. We are committed to developing high-quality specialist products and solutions using cutting-edge and quality-driven processes on the back of intensive dialogue with our customers and partners.