Abstract: This invention relates to a preparation method and equipment of graphite and catalyst composite for a kind of synthetic diamond. Firstly, graphite particles shall be placed into the heating chamber for pre-heating; secondly, the heated graphite particle will be fed into the coating room with vibrator or agitator and steam of carbonyl metal complex is input for coating; finally, the coated graphite particles are fed into a cooling and passivation room for cooling and passivation of the discharging materials or enter a next round of heating and coating. The surface of each graphite particle is plated with metal layer which can promote the crystal nucleus growing into perfect diamond crystal.

Abstract: This invention releases the preparation method and equipment of graphite and catalyst composite for a kind of synthetic diamond. Firstly the clean graphite particle shall be placed into the heating chamber for pre-heating, the lower limit of the heating temperature shall be higher than the boiling point of the coated carbonyl metal complex and the upper limit of the heating temperature shall be set according to the thickness of the coating needed; secondly, the heated graphite particle will be fed into the coating room with vibrator or agitator and the steam of carbonyl metal complex shall be input for coating; finally the coated graphite particle shall be fed into the cooling and passivation room for cooling and passivation of the discharging materials or enter the next round circle of heating and coating.