What should be the optimum peripheral speed for roller press?
The roller press is integrated with ballmill for semifinished grinding. Recently we have switched over from southafrica to petcoke clinker.The grindability has reduced considerably. the normal vibration range is 4 to 5 mm/s. what should be the permissible torsional vibration if it exceeds on account of increasing the peripheral speed?
the rated capacity of the same is 170tph equipped with twin drive each with 1250 kw motor. the roller dia.is 1500mm with 1200mm width. static gap is kept 12mm.