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Silicon, a metal with exceptional characteristics, is formed through the chemical reduction of quartz. It is the basic raw material for the production of semi-conductors: chips, solar cells, ...

Silicon provides alloys on the basis of iron or aluminium with unique characteristics.

Ferro-silicon, made of quartz, reacts very exothermally in molten steel, allowing it to remain liquid longer. In steel production, quartz is also used to separate impurities in iron ore by forming slag.