Silicon Production

Silicon Production

Industrial silicon production

Large scale production of silicon is done by reduction of quartz with carbon. The necessary high temperatures of about 2000 °C are processed by an electric arc in a reduction furnace.

A mixture of quartz and different carbon materials (coal, coke or charcoal) is continuously fed into the furnace. From the furnace tap hole liquid silicon is extracted with a temperature of about 1600°C. The metal is further processed by oxidative refining, casting, crystallization and crushing.

The purity of metallurgical silicon is about 99%. Typical impurities that come from the raw materials are iron, aluminum, calcium and titanium.


RW silicium GmbH
Wöhlerstraße 30
94060 Pocking

Phone +49 (0)8531 / 702-0
Fax +49 (0)8531 / 702-90