small mobile ballmill for gold miningSmall Mobile Ball Mill For Gold Mining Small Mobile Ball Mill For Gold Mining FOB Reference Price Get Latest Price Feeding size ≤20mm Discharging size 425 3 250 mesh Working capacity 30 800kg/h Raw material non flammable and non explosive materials like quartz feldspar porcelain clay bentonite calcite talc barite fluorite clay white mud and gypsum price