How to wet grind and sieve by laboratory ball mill

we could do wet grinding and meanwhile sieving the ore by a laboratory ball mill.  Like the follow picture, The ore is evenly fed into the ball mill, and after being ground, the slurry pulp goes into the spiral classifier for screening.  we could adjust the slope and the weir height of the spiral classifier to control the discharged size of the ore.

Advantages:

1. grinding and meanwhile sieving for saving the operation time
2. for continuous grinding and sieving for big capacity process
3. the discharged size could be adjusted
4. heavy duty design for tough and harsh grinding test job