Production and preparation process of high-purity aluminum nitride

The invention relates to the technical field of aluminum nitride preparation, in particular to a production and preparation process of high-purity aluminum nitride. The production and preparation process of the high-purity aluminum nitride can be used for simultaneously preparing high-purity aluminum nitride powder, high-purity aluminum nitride whiskers and high-purity aluminum nitride single crystals, and comprises the following steps of: gasifying and pressurizing liquid nitrogen to form high-pressure nitrogen, heating and melting a high-purity aluminum ingot to form high-temperature liquid aluminum, atomizing by using the high-pressure nitrogen, feeding into a high-temperature-resistant reaction tank with a heat accumulator, and introducing the high-temperature-resistant reaction tank into a furnace; according to the production and preparation process disclosed by the invention, the problems that an aluminum nitride product is low in quality, high in production cost and incapable of being continuously prod