Process for the regeneration of shaped carbon bodies

Details Process for the regeneration of shaped carbon bodies Process for the regeneration of shaped carbon bodies

1986-02-06

1988-02-16

Heller, Gregory A.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423448, 423460, 423461, C01B 3102, C09C 156

Patent

active

047254238

ABSTRACT:
A process and apparatus for the regeneration of shaped carbon, and especially graphite, bodies used in the presence of molten silicon. The shaped bodies are heated in an inert atmosphere to a temperature in the range of from 1700.degree. to 3000.degree. C. and maintained at this temperature for a defined period of time. The process substantially prolongs the service life of the shaped bodies. The apparatus includes at least one evacuable loading chamber, and evacuable heatable heating chamber connected to the loading chamber and an evacuable coolable cooling chamber connected to the heating chamber. A support capable of moving between the loading, heating and cooling chambers is adpated for receiving the shaped bodies to be regenerated.

REFERENCES:
patent: 2260746 (1941-10-01), Hanawalt et al.
patent: 4030876 (1977-06-01), Akae et al.
patent: 4199872 (1980-04-01), Bischoff
patent: 4225463 (1980-09-01), Unger et al.
Lewis et al., Vitreous Carbon as a Crucible Material for Semiconductors, id-State Electronics 1963, vol. 6, pp. 251-254.

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