Make the Screw Chute stand,adjust the vertical line,fixed the proper place with the iron stucture or wood.make the ore sand delive to two feed openings of the screw chute top,enter enough water,adjust the mash chrome,the mash flows freely from the high,produce the inertial force at the speed of the rotary,divided the sand and ore,the concentrate comes into bucket with tract,gangue comes into the bucket with the tract to the sand pool,and pump off,complete the whole process.