Aggregate crushers are machines designed to pulverize or grind various forms of rocks and stones into relatively uniform, and small pieces. Aggregate crushers are mainly used in recycling, quarrying, and mining operations. There are several crusher types that perform these tasks including impact crushers, cone crushers, gyratory crushers, and jaw crushers.
Aggregate crushers can also be compact and small, similar to some of the mobile units that are used to reclaim recycled asphalt, or they can be very large machines designed to process large volumes of materials each day.
– Jaw Crushers
A jaw crusher is a type of aggregate crusher that is used frequently in large quarrying or mining operations. These machines crush large rocks or ore pieces between two jaws or plates. One of the jaws is mounted and the other is stationary forming a V-shape. The second jaw will move in a back and forth motion (relative to the first jaw). This motion crushes the materials as they move downward until the materials are broken down into small enough pieces so that they can pass through an opening point (at the V). Several jaw-type aggregate crushers for sale are frequently employed (in a series), which gradually reduces the size of the particles.
– Gyratory Crushers
Gyratory crushers are another type of aggregate crusher which is similar to a jaw crusher, but this machine comes with a cone-shaped hopper and a cone-shaped crushing head which is smaller. This head gyrates inside the hopper using eccentric movements as opposed to rotating movements. This rock crushers the materials until the pieces become small enough so that they fall through an opening along the bottom.
– Cone Crushers
Cone crushers are also similar to the gyratory crushers, except that the crushing chamber typically features a design with sloping sides that are less steep.
– Impact Crushers
The impact crushers use mass and velocity to break down and process materials. To start with, the fed materials start reducing in size when entering the crusher machine when they make contact with hammers or blow bars that rotate in the rotor. The second part of breaking the materials down occurs when the material accelerates into either breaker plates or stationary aprons.
The impact crusher is a common choice when shape happens to be a critical requirement. The materials that are processed in this type of crusher are also less abrasive. Impact crushers for sale create a crushing action designed to break rocks at their cleavage planes. This helps to improve the overall quality of these products in regards to shape.
These types of product qualities often make them the preferred choice in concrete aggregate and road-stone applications that are highly specified.
The cone crusher is generally used in secondary and tertiary roles when the product shape is an important requirement but the proportions of the fines produced should also be reduced. Even if the produced fines are only decreased by a few percentage points, this often represents large volumes of materials when it comes to larger operations. This ultimately raises the bottom line and profitability of the business.