APPARATUS AND METHOD FOR COMMINUTING A POLYCRYSTALLINE SILICON ROD

• Main Authors: MATTES, JOACHIM, GRUEBL, PETER, RIESS, SIEGFRIED
• Format: Patent
• Language: English; French
• Published: 01.02.2014
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CASTING; CHEMISTRY; CRYSTAL GROWTH; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TRANSPORTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; WORKING METALLIC POWDER

The subject of the invention is an apparatus for comminuting a polycrystalline silicon rod, which apparatus comprises a base, as well as at least one movable comminuting tool and at least one immovable anvil, wherein the at least one comminuting tool possesses a longitudinal axis which is oriented parallel or virtually parallel to the surface of the base, wherein a silicon rod to be comminuted, which lies on the surface of the base, can respectively be adjusted between comminuting tool and anvil in such a way that the comminuting tool and the anvil can respectively in the region of the silicon rod have contact with the silicon rod, and a point of contact of silicon rod and anvil, as well as a transverse axis of the silicon rod, which transverse axis runs through a rod center, or an axis of the silicon rod, which axis is parallel to that transverse axis and is distanced by up to 30% of a rod diameter from the rod center, respectively lie on the longitudinal axis of the comminuting tool or on an axis which is parallel to the longitudinal axis of the comminuting tool and is distanced by up to 30% of the rod diameter from the longitudinal axis of the comminuting tool. A further subject of the invention is a method for comminuting a polycrystalline silicon rod.