Continually slamming a 20lb ramrod down against hard rock in a cylinder , Plan to crush to -200 Run between 1,500 - 2,000 rpm , The blue impact mill a fellow on the Alasks gold forum sent his pics to me about 6 years ago , Curious about the wear plates and distance from hammers to the wear plat.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust , Other metallurgical developments such as silver and gold mining mirrored the practices and developments of the bulk material handling , In this context, the SAG mill and ball mill are considered grinders rather than crushers.