Silica sand for foundry use is made of silicon dioxide (SiO2) by more than 98% and small amounts of other minerals, usually as oxides. It is a molecule consisting of two oxygen atoms and a silicon atom. This molecule is very stable, is insoluble in water and has a high hardness. EUSKATFUND distributes sand by its high silica content> 99%, are considered high quality for the foundry sector. Our sands have a very high melting point, so ...