100tph diamond and gold mining plant dredger in Sierra Leone. The dredger not only mines, but also processes the ore directly on ship to recover diamonds and gold, very flexible and convenient, very suitable for river channel placer processing. The dredgers pick up the sand from the river, the trommel screen sieves the rocks and gravel away, and the rest of material goes into the jig machine to collect the diamond, and then the sluice box collects the gold.