Each mine is base on lots different metal, every metal will have itself weight, this weight is for different, vertical roller mill is use this different weight to separator different metal, like gold, gold is weight then other metal, so shaking table, vertical mill, sluice box, and centrifugal concentration this machine can get the more weight metal (gold).

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.