what is the main types of primary crushers

what is  the main types of primary crushers?

Cone crushers are designated in size either by the gaping and mantle diameter or size of the opening reception. Gyratory cone crushers can be used in primary or secondary crushing. The crushing action is caused by closing the gap between the mantle line (movable) mounted on the central vertical axis and the concave liners (fixed) mounted on the main frame of the crusher. The gap is opened and closed by an eccentric on the bottom of the shaft as vertical central axis causes the circle. The vertical axis is free to rotate around its axis. The crusher is shown a suspension axis, which implies that the main shaft is suspended at the top and the eccentric is mounted above the gearbox.

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