Drum Screen/Trommel Screen/Roller Screen

Material feed into the hopper by excavator, high pressure water released and wash the mineral, then, mineral by forward into the drum. It is lifted up by the rotation and aerated as it fall back down. This finer material passes through the screen openings while the large material tumbles towards its eventually exit at the real of the drum. After that, the final mineral and water go through the sluice bow which is consist with gold grass mat. The no use mineral are washed out and the gold are catched by the gold grass mat. China supplier mobile screen river gold washing machine trommel.