The invention discloses a
magnesium-
silicide spiral cooling device. The
magnesium-
silicide spiral cooling device comprises a motor, a cooler and a spiral
propeller arranged in the cooler, wherein the spiral
propeller mainly comprises a hollow shaft and spiral blades arranged on the hollow shaft; a cooling water introduction
pipe is arranged in the hollow shaft; a cooling water
return channel is formed in a gap between the inner wall of the hollow shaft and the outer wall of the cooling water introduction
pipe; the first end of the cooling water
return channel is connected with a cooling waterdelivery
pipe; and a front end cylinder, a multi-level cooling
water jacket and a
tail end cylinder are arranged outside the cooler from the second end to the first end of the cooler in turn. The
magnesium-
silicide spiral cooling device has the advantages that: due to the combination of the spiral
propeller and the cooler, continuous cooling of high-temperature
magnesium silicide powder can be realized, and continuous synthesis of
magnesium silicide is facilitated; and the high-temperature
magnesium silicide powder moves forward with the turnover of the spiral propeller, and therefore the
heat transfer is enhanced, the cooling of the magnesium silicide
powder is uniform, the
cooling rate is stable and a mild expansion condition is provided so as to ensure the reaction activity of the magnesium silicide and prevent the cooled magnesium silicide from
caking.