To process precious and base metals, gravel, minerals and sand, most sites will need a scrubber and trommel. When the mineral sand is trapped inside balls due to a high clay content, the material is passed through a rotating screen known as a scrubber. As the scrubber rotates, it breaks up alluvial, clay and sand. A trommel is used to separate the materials. Elevated at an angle a cylindrical drum has the material fed in one end. The under-sized material passes through the screen while the oversized material exits the drum at the other end. A vibrating screen does a similar job to the trommel, however, is not as robust and won’t last as long when working under stress. The vibrating screen can evaluate more material at one time than the trommel. The Right Specs Selecting the right scrubber for your project needs to take into account some considerations. By informing your supplier of the following information, you can ensure that you will receive the ideal scrubber for the job. N