Dear Mr. Umar

When you say your requirement is 16 mesh SAY 99 % PASSING THE FINNER SIZE COULD BE ANYTHING SAY UPTO 400 MESH OR EVEN FINNER.

Now you you will have to decide how fine will suit your requirement.

using a hammer mill will give you a top size of 100 mesh 95% passing and no coarser.

secondly you cannot screen 16 mesh easily in a vibrating screen even if your product is bone dry.

Now what will be the best alternative is dependent on the moisture and your finner size restriction

Case I :use a beatter box and the opening size on the delivery side is a matter of trial and arriving at a correct gap opening.

But still you need to screen out the course!!! the cheaper solution will be a tromel screen - : highly inclined and having a larger than 16 mesh opening perforations to udjust for the inclination.

Even then you will have to stop the screen and clean it very often depending on the nature of you product and environmental conditions. This is a simple solution assuming you dont need to control on the finer size

If you do have a restriction on the finner sizes you will have to fit a mechanical air seprator to de dust the ground product

Trust the suggestions were of help

Thanks ■