PDF Construction Working and Maintenance of Crushers for Crushing Bulk ...
8 Ring Granulators 42 9 Rotary Breakers 48 10 Manganese Steel 49 ... gravity impact and dynamic impact. Coal dropped onto a hard surface such as a steel plate is an example of gravity impact. ... many times, rotary breakers are used as primary crushers and ring granulators are used as secondary crushers. Information on construction and working ...