Secondary Gyratory Crushers - Mineral Processing & Extractive .Feb 16, 2016 . The use of large primary crushers made secondary crushing . was the debut of the Superior McCully fine-reduction crusher, which was.primary gyratory mccully,Gyratory Crushers - Mineral Processing / MetallurgyFeb 17, 2016 . Primary gyratory crushers are designated by two numbers. These are the size of the feed opening (in inches) and the diameter of the mantle at.
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