Process for deoxidizing silicon
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsMalek BENMANSOUR, Sarah DARWICHE, Jean-Paul GARANDET, David PELLETIER
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Abstract
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.
Claims12
A process useful 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 of step (ii) into contact with a thermal plasma conveying hydrogen radicals under conditions suitable for their deoxidation and for their non-evaporation, and
- (iv) recovering a deoxidized material according to step (iii) in a liquid silicon bath.
Dependencies are inferred from the claim text.