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Ferrosilicon
FeSi is an alloy of iron and silicon, based on quartz (SiO2), iron ore (Fe2O3), coal and coke (C). The carbon in the coal and coke is needed for extracting oxygen so that pure silicon and iron can be formed..
Silica
The silica dust is initially a waste product from the production of FeSi. However, with today's cleaning technology, it has become a resource. New areas of application are constantly...
