PROCESS FOR DEOXIDIZING SILICON

摘要

The invention relates to a process of use for deoxidizing silicon particles comprising at least the steps consisting in: (i) having surface-oxidized silicon particles that have a mean size of less than or equal to 10 μm, (ii) formulating said particles into the form of aggregates having a mean size ranging from 20 to 300 μm, (iii) bringing said aggregates from step (ii) into contact with a thermal plasma conveying hydrogen radicals under conditions suitable for the deoxidation thereof and for the non-evaporation thereof, and (iv) recovering a material deoxidized according to step (iii) in a liquid silicon bath.