Metallurgical silicon and ferrosilicon with low oxygen content

摘要

The invention relates to a metallurgical silicon or ferro-silicon in the form of granules with a mean size of & 10 mm, the total oxygen content is less than 0,05% by weight. & br / & it also relates to a process for manufacturing this silicon or ferro-silicon, comprising: & br / - a reduction carbothermal of the silica to the electric furnace, & br / - a refining the chlorine of the liquid metal obtained, & br / - a water granulation under an inert atmosphere of the liquid metal to be refined. & br / the silicon according to the invention can be used for the manufacture of silicones, or an alloy of aluminum, and the ferrosilicon as an additive to the steel in order to obtain magnetic metal sheets for the construction.