Mineral grinding equipment and grinding process thereof

The invention discloses mineral grinding equipment and a grinding process thereof, and relates to the technical field of mineral grinding, the mineral grinding equipment comprises a supporting assembly, a funnel-shaped lower grinding seat is arranged in the middle of the supporting assembly, a hollow conical upper grinding seat is arranged in the lower grinding seat, and an annular plate is arranged on the inner wall of the bottom of the lower grinding seat; a sealing cover plate connected with the supporting assembly through a telescopic assembly is arranged on the inner wall of the annular plate, a plurality of layers of discharging grooves are formed in the outer wall of the upper grinding base in a surrounding mode, and a plurality of guide plates of annular structures are correspondingly arranged on the inner side wall of the upper grinding base; the grinding upper seat is arranged, the movable pipe is arranged in the grinding upper seat, the discharging cover is arranged at the top end of the movable pi