Microwave induction catalytic preparation method of nano tungsten carbide

The invention discloses a microwave-induced catalytic preparation method of nano-sized tungsten carbide. Preparation steps of the invention are that: (1) a certain mass of tungstenic material is dissolved in a microwave resistant absorption vessel which contains solvent, and dispersant and carbon source are added into the vessel in sequence; the mixture is put into an ultrasonic clearing machineto disperse homogeneously with ultrasonic, and then the mixture is taken out to be stirred till the mixture becomes viscous slurry; (2) the viscous slurry is put into a microwave oven, and drying powder can be obtained by a intermittent microwave heating method, namely, the slurry is heated intermittently; (3) a certain proportion of metallic powder is added into the drying powder, and the obtained mixture is put into a crucible after mixing homogeneous mechanically; after surroundings of the crucible are coated with microwave resistant heat preserving materials, the crucible is put into the microwave oven to be heated