Arrangement for the continuous melting of granulated silicon for

Details Arrangement for the continuous melting of granulated silicon for Arrangement for the continuous melting of granulated silicon for

1988-10-14

1990-07-10

Straub, Gary P.

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Crystallizer

1566171, 1566201, 1566204, 198640, 198642, 239687, 239688, 422248, 422249, 422253, C30B 3500, C30B 1502, B65G 3100, A01C 1700

Patent

active

049405683

ABSTRACT:
For the continuous melting of silicon granulate for a band drawing method, a melt reservoir in communication with the melt crucible based on the principle of communicating vessels, is provided in the form of a thermally insulated, annular crucible in whose center axis a rotary plate to be centrifugally accelerated is arranged, the speed thereof being continuously varied. Two pipe parts connected to one another at an angle between approximately 45.degree. to about 90.degree. are secured on the rotary plate, the one, vertical pipe part thereof serving as admission in the rotational axis and the other pipe part thereof forming the acceleration path for the granulate particles in the direction toward the annular melt crucible. On the basis of this arrangement, a uniform delivery and melting of the granulate particles in the melt surface is achieved and, thus, a continuous silicon band drawing with uniform layer thickness is enabled. The arrangement is used in the manufacture of silicon bands for solar cells.

REFERENCES:
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patent: 3780887 (1973-12-01), Bottoms
patent: 3954551 (1976-05-01), Cecil et al.
patent: 4289571 (1981-09-01), Jewett
patent: 4389377 (1983-06-01), Duncan et al.
patent: 4437613 (1984-03-01), Olson
patent: 4478880 (1984-10-01), Belouet
patent: 4563979 (1986-01-01), Falckenberg et al.
patent: 4664745 (1987-05-01), Falckenberg et al.

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