Selecting the right crusher, or any type of processing machinery or equipment is important for all types of quarry operations. Finding out about the different crushers and what they are used for, will result in better results for each given site. Each of the aggregate crusher types operates differently and each type is utilized for achieving particular results.
At the same time, to obtain specific outputs, each of these crushers also requires different types of maintenance tasks so that they run efficiently. Operators that are able to achieve this, in addition to consistent and uniform feeds to a crusher, will become more efficient as well as more profitable.
1. Jaw Crushers
The jaw crushers are compression type crushers. The material fed into the crusher is reduced and compacted by squeezing the materials between a stationary and moving piece made from metal. The discharge sizes are controlled by a gap setting, which is a space between each steel piece. The tighter settings result in smaller output sizes.
Jaw crushers are commonly used in the primary crushing stage and rarely utilized for a secondary crushing phase. Since these machines are compression crushers, these machines typically produce coarse materials since it breaks the rocks along the natural weakness lines. The jaw crushers are one of the best primary stage solutions that prepare rocks and stones for a subsequent processing stage including washing, secondary, or classifying crushing.
2. Gyratory And Cone Crushers
Gyratory crushers and cone crushers are also types of compression machines, designed to crush materials between a stationary and moving piece. The output is typically controlled by a setting between each piece of steel. However, the chamber on these machines has a round shape, but they do not rotate. Instead, the wedge drives around and this creates compression from one side of this chamber, while the discharge opening is positioned on the other side.
The cone crusher is typically used in the secondary and the tertiary roles when the shape of the product is a vital requirement but a proportion of the fines that are produced must also be minimized. Even when the fines produced are reduced by only a couple of percentage points, it often represents a large volume of materials in larger operations, which ultimately increases the company’s profitability and bottom line.
3. Impact Crushers
Impact crushers use velocity and mass to process and break down materials. To begin with, feed materials start to reduce as they enter the crusher making contact with hammers or rotating-blow bars inside the rotor. The secondary breakage will occur as the materials are accelerated into either the breaker plates or stationary aprons. Impact crushers are usually used when shape is one of the critical requirements. The feed materials are also not as abrasive. The impact crusher causes a crushing action that breaks the rocks along cleavage planes, which produces an improved product quality when it comes to shape. These product qualities make them the best choice to use in a highly specified concrete aggregate and roadstone application.