Jaw crushers and gyratory crushers are used as Primary crushers in two stage crushing. Size reduction ratio is limited to 5 to 6: I. Hammer crushers and Impactors can be used both as Primary crusher in single stage crushing and as Secondary crusher in two stage crushing operation.
double roll crusher for limestone mill in india. Double Roll Coal Crusher Double roll coal crusher is mainly used to crush material below the medium hardness such as clinker mineral coke slag shale limestone and so on It is the most suitable for small and medium nonmetal mines and chemical industries to undergo secondary and fine crushing Crusher For Lime Stone Crusher Mills Cone .