Smart Gold Ore Grinder Double Rollers 1500 Wet Pan Mill. The wet pan mill is named by the diameter of roller. 1300, 1350, 1400, 1500, 1600 is suitable for selection of iron ore, molybdenum ore,lead ore,zinc ore, antimony ore and so on. 850, 900, 1000, 1100, 1200 is suitable for selection of gold ore.