High-purity aluminum hydroxide granulating, deironing and screening device and using method

The invention relates to the technical field of screening devices, and discloses a high-purity aluminum hydroxide granulation deironing screening device and a using method.The high-purity aluminum hydroxide granulation deironing screening device comprises a cover ring, a partition plate is fixedly installed on the inner wall of the cover ring, a feeding disc is rotatably installed on the inner wall of the cover ring, and a plurality of feeding grooves are formed in the outer surface of the feeding disc at equal intervals; a strong magnetic block is embedded in the bottom wall of the feeding groove. When a feeding disc rotates to a discharging hopper, a limiting ring fixedly installed at the end of a guide rod moves to the farthest end of a cam, so that a push plate moves outwards under the thrust action of the guide rod, iron impurities adsorbed on the surface of a strong magnetic block can be scraped off when the push plate moves, and the scraped iron impurities are pushed into the discharging hopper; and cl