As a result, the mill output will increase with this reduced size to approximately 77,000 tons per day. The gain in production compared to the 13,000 micrometer feed will be: /65,000 x 100 = 20%
Ball Mill The ball mill has been around for eons. There are many shapes and sizes and types. There is a single enclosed drum type where material is placed in the drum along with a charge of ...
A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of 80% passing ¼ inch . The required product size distribution is to be 80% passing 100 mesh . In order to determine the power requirement, the steps are as follows:
Very large tonnages can be ground with these ball mills because they are very effective material handling devices. Ball mills are rated by power rather than capacity. Today, the largest ball mill in operation is 8.53 m diameter and 13.41 m long with a corresponding motor power of 22 MW .
The size of the balls depends upon the size of the drum, typical ball sizes are two to three inches in diameter . Bearings smaller ball mills use anti friction cylindrical roller bearings .