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US 12,318,814 B2Granted
Apparatus and method for flexible classification of polyand/ or monocrystalline silicon
AssigneeAlztec GmbH
InventorsHerbert Sommer, Ernst Hopf
Life of this patent
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Abstract
An apparatus which allows a flexible classification of poly- and/or monocrystalline silicon comprises a winnowing device configured to separate crushed material of poly- and/or monocrystalline silicon into a fine fraction and a coarse fraction. The apparatus also comprises an optoelectronic sorting device configured to separate the coarse fraction into at least two fractions.
Claims23
An apparatus which allows a flexible classification of poly- and/or monocrystalline silicon, wherein the apparatus comprises:
- a winnowing device which is configured to separate crushed material of poly- and/or monocrystalline silicon into a fine fraction and a coarse fraction,
- the winnowing device comprising:
- a separating edge configured to separate a first region from a second region, the separating edge having a length, and
- a blowing device configured to generate an air stream and to blow only the fine fraction into the first region by means of the air stream, the blowing device configured to generate the air stream in such a way that the air stream has a width that corresponds to the length of the separating edge or deviates by less than 30% from the length of the separating edge, wherein an air strength of the air stream is constant along its width;
- and
- an optoelectronic sorting device which is configured to separate the coarse fraction into at least two fractions.
3 more elements
Method for a flexible classification of poly- and/or monocrystalline silicon, wherein the method comprises:
- Separating crushed material of poly- and/or monocrystalline silicon into a fine fraction and a coarse fraction by means of a winnowing device comprising a blowing device and a separating edge that separates a first region from a second region, the separating edge having a length;
- generating, with the winnowing device blowing device, an air stream that blows only the fine fraction into the first region, including generating the air stream in such a way that the air stream has a width that corresponds to the length of the separating edge or deviates by less than 30% from the length of the separating edge, and an air strength of the air stream is constant along its width;
- Separating of the coarse fraction into at least two fractions by means of an optoelectronic sorting device.
Dependencies are inferred from the claim text.