The screening equipment for high-purity magnesia production comprises a screening box, flow guide plates are fixedly connected to the tops of the two sides of the screening box, a
grinding assembly is fixedly connected to the position, located below the flow guide plates, of an inner cavity of the screening box, and a screening
assembly is fixedly connected to the position, located below the
grinding assembly, of the inner cavity of the screening box. According to the high-purity magnesia
grinding device, the grinding assembly is adopted for grinding high-purity magnesia, the grinding distance between the two grinding rollers can be adjusted through stretching out of a double-output-shaft hydraulic telescopic rod, and therefore the grinding
fineness can be adjusted, after the ground high-purity magnesia enters an inner cavity of a screen, a
cam can be driven to rotate by starting a second motor, and the grinding precision is improved. The screening function is achieved, the multi-stage
screening effect can be achieved by arranging the three
layers of filter sieves, so that the purification accuracy can be guaranteed, and after screening is completed, materials left after screening of each layer can be rapidly discharged by inclining the screen cloth.