Dredging machinery suitable for processing between helpful and gangue minerals with a larger density difference of ore or other material. It is treated coarse, medium and fine grain (approximate border is greater than 25 mm, 25 "2 mm, 2 ~ O.1 mm) useful way of ore. Efficiency in dealing with fine slime (less than 0.1 mm) not high, modern flow membrane processing equipment useful to be able to recover the 20-30 micron size fraction, centrifugal concentrator able to 10 microns. dredging machine method is tungsten, tin, gold ore, in particular those dealing gold, tin sand tradition approach in handling including metals (niobium, tantalum, titanium, zirconium, etc.) is also very common in placer. sieve sand is also used to sorting weak magnetic iron ore, manganese ore, chrome ore. 4.17 if you are interested in our products please visit the company's official website www.sdwsjx.com