Submicron ammonium rhenate, preparation method thereof and rhenium powder

The invention provides submicron ammonium rhenate, a preparation method thereof and rhenium powder, and relates to the field of rhenium powder preparation. The method comprises the following steps: atomizing an ammonium rhenate solution to obtain fog drops, mixing the fog drops with frozen air to obtain ice crystals, and carrying out vacuum sublimation drying on the ice crystals in a vacuum environment to obtain the submicron ammonium rhenate. The method comprises the following steps: atomizing an ammonium rhenate solution to obtain small fog drops, enabling the small fog drops to pass through low-temperature frozen air, instantaneously cooling the small fog drops to form ice crystals, and carrying out vacuum sublimation drying on the ice crystals in a vacuum environment, so that water frozen in the ice crystals sublimates from solid particles, and water molecules are separated from the surfaces of the particles and are pumped away, thereby obtaining the submicron ammonium rhenate. 本申请提供一种亚微米级铼酸铵及其制备方法、铼粉，涉及铼