FIELD: chemistry.
SUBSTANCE: apparatus for producing thermally expanded graphite includes a feeding device 1, a circular waveguide 6, a storage hopper 19, a device for feeding blow-down carbon dioxide gas or air, magnetron generators, a belt conveyor with lower 2 and upper 3 belts formers 4 and 5. The circular waveguide 6 is provided with gas valves 15, longitudinal slits 14, communication windows 11 with insulating quartz inserts 12, insulating quartz rings 7 and 16 and is divided into sections having horn radiators 9 and 10. A layer of oxidised graphite undergoes microwave treatment for 0.1-0.5 s with power which provides temperature of 1500-1800°C, which is then lowered to provide temperature of 500-1000°C for 3-10 s.
EFFECT: high chemical purity and specific surface area and low packed density of thermally expanded graphite.
4 cl, 1 dwg
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