Self-cleaning anti-blocking magnetism gathering medium box, flat-ring high-intensity magnetic separator and self-cleaning method of flat-ring high-intensity magnetic separator

The invention discloses a self-cleaning anti-blocking magnetism gathering medium box, a flat-ring high-intensity magnetic separator and a self-cleaning method of the flat-ring high-intensity magnetic separator. The magnetism gathering medium box comprises a supporting frame, a first sub-medium box installed on the left side of the supporting frame, a pushing piece arranged on the right side of the supporting frame in a sliding mode and a second sub-medium box which is arranged between the first sub-medium box and the pushing piece, wherein the second sub-medium box is supported by an inclined structure, which is located at the upper end of a supporting piece fixed together with the supporting frame, in a gravity mode; first toothed plates of the first sub-medium box and second toothed plates of the second sub-medium box are arranged in a staggered manner; and a bearing part for bearing thrust is arranged on the pushing piece. According to the self-cleaning anti-blocking magnetism gathering medium box, tooth p