Portable Gold Trommel, MSIs T8. The portable gold trommel wash plant, the T8, is rated up to 300 tons per hour. It is designed specifically for gold recovery operations. We rate the T8 at 300 tons per hour, or 200 cubic yards. Its design allows for portability and fast setup, with Feb 10, 2018 JXSC gold mining machine suit for various types of gold raw material alluvial gold/ placer gold/ sand gold/ river gold/ gold tailing, etc. The main gold processing includes feeding, washing, sieving, rough separation, final concentration, and refining. Because the gold density is much bigger than other minerals, so mainly use gravity separation.