Graphitization system method and apparatus

Industrial electric heating furnaces – Resistance furnace device – With heating element detail

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373115, 373122, H05B 360, F27D 300

Patent

active

043947662

ABSTRACT:
Amorphous carbon bodies forming a lengthwise series horizontal string or column 26 are converted to graphite by the Joule effect in a semi-cylindrical metal shell 20 with a refractory lining 22 and containing particulate thermal insulation medium 28. When the conversion to graphite is complete the insulation medium is dumped through the bottom of the metal shell into a hopper 50 and transferred for re-use while hot. Air pollution control is facilitated and energy and capital costs are lowered by specialization of equipment, retention of sensible heat and shorter cycle times, allowing operation with less equipment and higher production rates.

REFERENCES:
patent: 1107478 (1914-08-01), Bayard
patent: 1198616 (1916-09-01), Brown
patent: 4015068 (1977-03-01), Vohler
patent: 4017673 (1977-04-01), Michels et al.

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