Patent ID: 7584919

Claim:
A compacting device for the low-metal compaction of a silicon powder, the device comprising: a casing at least surrounding a working chamber; a feed arrangement arranged on the casing, said feed arrangement feeding a silicon powder, which is to be compacted, into the working chamber; a first compacting roller rotatably arranged in the working chamber; a second compacting roller rotatably arranged in the working chamber, said first compacting roller comprising a first roller jacket, said second compacting roller comprising a second roller jacket, said first compacting roller and said second compacting roller forming a compacting gap for compacting the silicon powder therein, said first roller jacket and said second roller jacket consisting of ceramic, said first compacting roller having a first core, said first roller jacket surrounding said first core, said second compacting roller having a second core, said second roller jacket surrounding said second core, said first core and said second core being composed of metal, said first roller jacket being bonded to said first core, said second roller jacket being bonded to said second core.