Triple Roll Crushers

Depending on the duty class, they can be used in most ROM applications, such as coal, salt, lime, pet coke and potash operations. Triple Roll Crushers combine a Single Roll Crusher with a Double Roll Crusher to form a crusher that is capable of achieving a 6:1 reduction ratio in the primary stage and a 4:1 reduction in the secondary stage while producing a cubical product at high capacities. An intermeshing tooth design means that no timing gears are required.

Triple Roll Crushers have long been used in a variety of applications, including ROM feeds, coal, trona, salt, glass and other friable minerals.

How Triple Roll Crushers Work

The top stage of the crusher is made up of a toothed roll assembly, which crushes the incoming feed material against a crushing plate. This stage is designed to reduce larger feed sizes before feeding the secondary stage. When properly fed in the direction of the roll rotation, the crushing action is carried out along the full width of the curved crushing plate, which ensures maximum throughput capacity. A properly sized roll diameter and tooth configuration grabs the incoming feed and pulls it into the crushing zone without hesitation. The crushing plate has reversible and easily replaceable crushing plate tips, which provide the producer with twice the wear life and simplified maintenance.

The secondary stage of crushing consists of a Double Roll Crusher arrangement. The secondary or bottom stage is fed directly from the top stage, where the feed material is channeled between the crushing rolls. A combination of compression and shear forces created between the rolls reduce the feed material to the desired product size while producing a cubical product with minimum fines.

McLanahan’s mechanical tramp relief systems employ a spring-and-toggle mechanism that activates whenever an uncrushable object enters the crushing chamber. Once an excessive force is applied to the crushing plate, movable roll assemblies break open to allow the uncrushable item to pass. The tramp relief system then closes, returning both the crushing plate and movable roll assemblies to the previous setting while allowing the crusher to continue operating uninterrupted.

Optional features include hydraulic product adjustment, roll scrapers, automatic lubrication, wheeled support base and other custom solutions.

Why McLanahan Triple Roll Crushers

Offering the only Triple Roll Crusher in the mineral processing industry, McLanahan provides a crusher with a lower overall headroom requirement and a simplified process flow. The McLanahan Triple Roll Crusher also features hydraulic product size adjustment for both the primary and secondary crushing stages. This gives producers the option of changing size specifications or adjusting for wear if the need arises.

Triple Roll Crushers feature an automatic spring-and-toggle relief mechanism on both stages. This allows the crushing plate in the primary stage and movable roll in the secondary stage to open, safely pass uncrushable material and return to its original setting for continued operation. In addition to tramp relief, Triple Roll Crushers include access doors to assist with inspecting for wear or to facilitate roll maintenance. They are well guarded for personal protection.