Electric heating – Metal heating – By arc
Patent
1993-01-14
1995-02-28
Paschall, Mark H.
Electric heating
Metal heating
By arc
21912136, 21912151, 21912148, 20415747, 2041574, 4234458, 423DIG40, B23K 1000
Patent
active
053939557
ABSTRACT:
An improved process, and an apparatus, are provided for preparing graphitic soot comprising C.sub.60 and C.sub.70 fullerenes, the process comprising evaporating, in a tubular evaporator, an electrically conductive carbon rod in an electric arc plasma sustained between the carbon rod and a second electrically conductive carbon rod, each of the carbon rods being aligned coaxially in the evaporator, and at least one of the rods being moveable, in a stream of at least one inert gas flowing coaxially over the carbon rods at an inlet flow rate of at least about 0.02 m.sup.3 /h, and collecting the graphitic soot from internal surfaces of the evaporator.
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Newitt Edward J.
Paschall Mark H.
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