Vibrating conveyor and method for conveying silicon fragments
AssigneeWacker Chemie AG
InventorsDirk Flottmann, Franz Köppl, Matthäus Schantz, Friedrich Steudten
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Abstract
A method for conveying silicon fragments has the silicon fragments being conveyed over a conveyor surface, which is made from hyperpure silicon. There is a vibrating conveyor, and during the conveying, the sharp edges of the silicon fragments are rounded and mechanical-physical decontamination takes place. The vibrating conveyor has a conveyor surface which is made from hyperpure silicon. A second vibrating conveyor unit has a conveyor surface which is made from hyperpure silicon and has passage openings therethrough.
Claims3
A vibrating conveyor comprising
- a first vibrating conveyor unit having a conveyor surface made from hyperpure silicon;
- a second vibrating conveyor unit having a conveyor surface which is made from hyperpure silicon and has passage openings therethrough;
- wherein the second vibrating conveyor unit has a conveying path and a discharge end,
- wherein a width or a diameter of the passage openings of the second vibrating conveyor unit increases in a direction of the discharge end along the conveying path;
- wherein passage openings in the second vibrating conveyor unit are selected from the group consisting of small size openings at a first end of said second vibrating conveyor unit, large size openings at a second end of said second vibrating conveyor unit, and intermediate size openings between said small size openings and said large size openings;
- a transition point on the conveyor surface of the second vibrating conveyor unit between the small size openings and the intermediate size openings;
- and
- a triangular deflector positioned beneath said transition point.
A method for separating silicon fragments comprising
- guiding the silicon fragments over a vibrating conveyor, said conveyor being a conveyor surface which is made from hyperpure silicon and said conveyor surface having passage openings therethrough;
- separating smaller fragments from larger fragments by having the smaller fragments fall through said passage openings;
- wherein a width or diameter of the passage openings of the vibrating conveyor increases in a direction of a discharge end of said conveyor along a conveying path of said conveyor;
- wherein the passage openings in the vibrating conveyor are selected from the group consisting of small size openings at a first end of said vibrating conveyor, large size openings at a second end of said vibrating conveyor;
- and intermediate size openings between said small size openings and said large size openings;
- providing a transition point on the conveyor surface between the small size openings and the intermediate size openings;
- causing smaller size fragments to fall through the small size openings on one side of the transition point;
- and causing medium size fragments to fall through the intermediate size openings on another side of the transition point;
- positioning a triangular deflector directly beneath said transition point;
- said triangular deflector having a left side and a right side;
- causing the smaller fragments to fall through the small size openings to contact said left side of said triangular deflector to be deflected into a first receptacle;
- and
- causing the medium size fragments to fall through the intermediate size openings to contact said right side of said triangular deflector to be deflected into a second receptacle.
Dependencies are inferred from the claim text.