The tornado mixing system is a circulating mixing device which is more simple. One 5x6PN centrifugal pump (charging pump) will provide recirculating function. The following graph shows its structure. Flow water and slurry around worm housing and in the line will create vacuum which will suck dry cement into the flowing slurry, and the slurry will be discharged to the bottom of mixing tank through a spacer plate. Then the charging pump will take slurry from the mixing tank and discharge it partly to plunger pump, and partly back to mixing tank.
