It is composed of high-frequency vibration self screening screen, support frame, electromagnetic vibration machine and other parts. The screen mesh is composed of high-strength nylon fibers, which are wear-resistant and reliable. Electromagnetic vibration machine utilizes the principle of half wave rectification, with strong vibration force and uniform feeding. It can fully achieve the separation of coarse and fine materials. The use of this device can improve the grade of refined powder by three to five. Monthly households customize specific specifications and sizes based on their own ore grade and processing capabilities.