Wacker Chemie Ag

Matthaeus Schantz

Reiner Pech

Hanns Wochner

Peter Gruebl

Bruno Lichtenegger

Marcus Schaefer

Andreas Hegen

The invention relates to a device for comminuting and sorting polycrystalline silicon, comprising an instrument for feeding a coarse polysilicon fraction into a crushing system, the crushing system associated with a sorting system for classifying the polysilicon fraction, wherein the device is provided with a controller which allows variable adjustment of at least one crushing parameter in the crushing system and/or at least one sorting parameter in the sorting system.

Method and device for comminuting and sorting polysilicon

Noncontaminating and nondestructive testing of a shaped polysilicon body for a material defect is accomplished by exposing the shaped polysilicon body to ultrasound waves, and the ultrasound waves are registered by an ultrasound receiver after they have passed through the shaped polysilicon body or reflected therein, so that material defects in the polysilicon are detected.

Method for the nondestructive material testing of highly pure polycrystalline silicon

A mechanical crushing apparatus for comminuting a polycrystalline silicon ingot, has a base and opposed comminuting and mating chisels, the chisels having longitudinal axises oriented at right angles to a longitudinal axis of the base and parallel to the surface of the base, and being movable in such a manner that a silicon ingot to be comminuted and which rests on the surface of the base can be positioned between the chisels such that all the chisels in the region of the silicon ingot are in contact with the silicon ingot, and comminution chisels in front of and behind the silicon ingot can be moved in the direction of their longitudinal axis to within a safety distance of the respective mating chisel, and the comminution chisels act on and break up the silicon ingot by means of sudden movement(s) in the direction of their longitudinal axes.

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Reut, Germany

Matthaeus Schantz