How To Make A Ball Mill For Gold Extraction

2011-9-8get yourself a large mortar and pestle and grind the oar very finehen make a ball mill out of a rock tumbler with ball bearings in itrind the powder with a little soap and water for at least 24 hoursf the gold is in a small particle or colloidal form locked up inside the sulfide minerals, you can liberate it by very fine grinding.

Latest Projects