65 liters. From the introduction of the 30-liter sander, we can know that this type of sander can grind 65 liters in one hour. Grinding machine is suitable for crushing and shaping soft, medium-hard and extremely hard materials. It is widely used in various ores, cement, refractory materials, bauxite clinker, emery, glass raw materials, machine-made construction sand, stone and various metallurgy. slag.