Apparatus and method for compaction of silicon powder
AssigneeSilansil AS
InventorPer Kristian Egeberg
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Abstract
An apparatus is provided for compaction of silicon powder in a reactor to minimize oxidation of the silicon, which compaction is in part effected by using the drop in pressure across a filter for exit gases from the reactor, the silicon powder being passed along a duct towards an exit of a reactor. The compaction is in addition carried out mechanically with the aid of a piston arranged at a gas exit, the filter advantageously being arranged on the piston, the filter being permeable to the gases, but collecting the powder. A method is also provided for compaction of silicon powder using an apparatus as described above.
Claims4
A method for compaction of silicon powder in a free space reactor for minimising oxidation of the silicon, comprising the steps of:
- passing the silicon powder along a duct towards a gas exit (1) of a reactor;
- depositing the silicon powder on a filter for exit gases from the reactor, further comprising the step of:
- compacting the silicon powder mechanically with the aid of at least one piston arranged at the gas exit.
Dependencies are inferred from the claim text.