Grinding Mills - Common Types - Mineral Processing & Metallurgy
The rod mill is a mill in which the grinding bodies are circular rods instead of balls, and, in order to avoid "tangling" of the rods, the length to diameter ratio of such mills is usually within the range of about 1·5 to 1 and 5 to 1. Pebble Mill. The pebble mill is the name associated with a mill in which the grinding bodies are natural pebbles or possibly ceramic bodies; the general ...