Grinding device for calcium powder production

The invention discloses a grinding device for calcium powder production. The device comprises a shell, wherein a feed hopper is arranged on the upper portion of the shell; a transverse partition plate is arranged at the position, close to the bottom, of an inner cavity of the shell, so that the inner cavity of the shell can be divided into an upper grinding cavity and a lower driving cavity; a negative pressure suction port is arranged in the side wall of the lower portion of the grinding cavity; a primary grinding mechanism is arranged on the transverse partition plate; an annular powder collecting groove is arranged in the peripheral side of the primary grinding mechanism through a first connecting rod; a plurality of guide barrels are arranged at the bottom of the powder collecting groove in a communicating mode; a secondary grinding mechanism is arranged under each guide barrel; and a cooperative driving mechanism for cooperatively driving the primary grinding mechanism and the secondary grinding mechanis