In nature have two forms of gold, one for stone gold, one for alluvial gold.Stone gold is encircled by stone, if need recovery stone gold, need crusher, and ball mill, and shaking table.Alluvial gold is for a independent bodyin sand mine. 

Some alluvial gold with clay, some alluvial gold don't have clay. If need recovery alluvial gold, need washing plant, centrifugal concentration , vertical mill, shaking table, sluice box.Pls check the picture, is very easy to separator this two kinds.

If gold size +3mm, it can use vertical mill.Then without clay mine just need screen machine to separator big size, also if gold size is for 0-3mm, After scrubber machine it can to centrifugal, then to shaking table. 

Vertical roller mill is very safe, becauseis don't have chemical agent, and easy to operation.Our factory have much experience for gold recovery, also can do tin . tan, ni, chrome, diamond mine. If you need more details can check: www.jxscmachine.com