Preparation method and application of carbon particles and silicon carbide powder

The invention relates to a preparation method and application of carbon particles and silicon carbide powder.The preparation method of the carbon particles comprises the following steps that carbon powder, an adhesive, a dispersing agent and an organic solvent are mixed, and a prefabricated carbon mixed solution is obtained; the crosslinking temperature T1 of the adhesive is less than 100 DEG C; placing the prefabricated carbon mixed solution in water to obtain a suspension; heating the suspension to a crosslinking temperature T1 of the adhesive, and carrying out solid-liquid separation to obtain a carbon particle precursor; and carbonizing the carbon particle precursor to obtain the carbon particles. According to the preparation method of the carbon particles, the high-purity nano or micron carbon powder which can be purchased in the market is used as a raw material to prepare the millimeter-scale large-size carbon particles with relatively high purity, and millimeter-scale large-size silicon carbide powder