and around a quarter of this is used specifically in metalliferous ore grinding [] where it is typically the most energy intensive set of operations [].The purpose of comminution in ore processing is to …Ball Mills 【Capacity】 0.2-90 T/H 【Advantages】Designed for long service life minimum maintenancedrum diameter is limited to 0.6 or 0.7 times the length of the mill. Characteristics Rod mills are used for grinding hard minerals. This type of mill is usually used as the first stage of a milling process to provide a reduced size feedstock for a further milling process. Coke Products for the glass industry Cement clinker (needs to be dry)The great range of sizes covered by industrial ball mills is well exemplified by Fig. 1.1 and Fig. 1.2. In the first illustration is shown a laboratory …1. Introduction1.1. Fine grinding in the mining industry. It has been estimated that approximately 2% of the world's energy usage is applied to mineral comminution,