Process for preparing basic aluminum nitrate solid powder

The invention discloses a process for preparing basic aluminum nitrate solid powder. The process is characterized in that a fluidized drying and crushing device is utilized to dry and crush aluminum nitrate crystals to prepare the basic aluminum nitrate solid powder, and the process comprises the following steps: SO1, the aluminum nitrate crystals are used as raw materials, and fluidized airflow is utilized to vulcanize the aluminum nitrate crystals; SO2, the fluidized aluminum nitrate crystals and fluidizing air flow are injected into a mixing cavity, the fluidized aluminum nitrate crystals collide under disturbance of annular air flow in the mixing cavity, the aluminum nitrate crystals are dried by hot air in the mixing cavity, and basic aluminum nitrate solid powder is obtained; and S03, the tail gas from which the basic aluminum nitrate solid powder is filtered is collected, and a by-product nitric acid in the tail gas is collected. Compared with the prior art, the novel technology adopted by the inventio