A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. ... The earliest crushers were handheld stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil.
The fundamental goal for the design of a crushing plant is an installation that meets ... Equipment suppliers are offering everlarger primary crushers, with 1,800 mm (72 in) ..... Higher moisture requires greater angles of withdrawal, and stone.
Jul 21, 2017 ... Three stages are only needed if the primary machine is called upon to take lumps of ... Most crushing plants are now designed on the lines shown in Fig. .... of cubical product from stone, gravel, ores and nonmetallic minerals.