· Here is a list of Rules of Thumb often used in Rock Crushing and around Crushers: Crusher Selection. For a hard rock mine appliion below 600 tonnes/hour, select a jaw as the primary crusher. Over 1,000 tph, select a gyratory crusher. Between these capacities, you have a choice. Source: Chris Ottergren ; For a hard rock mine appliion below 540 tonnes/hour, a jaw crusher is more .
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