When you’re choosing a quarry crusher machine, there are several factors to consider. Your buying decisions may be informed by the specs of the machine, gradation calculations and material output rates. However, the primary consideration should be the materials you’re working with and the demands of your operation.
On most sites, you’ll likely find yourself needing more than one quarry crusher machine, so you can break the material down in stages. For example, you may use jaw crusher equipment as your primary crusher, to break down the materials into small enough chunks that they’re manageable enough to transport. You’ll then use a secondary crusher to break the material down into finer particles.
Crushing Stages and Crusher Selection
Your primary crusher will most likely be a jaw crusher, but impact crushers can be employed if you’re working with softer materials. In general, jaw crushers are inexpensive and reliable, although you’ll still want to consider the size and portability of the machine. If you’re working short-term contracts, a portable machine on tracks would save money in the long term by reducing transport costs.
Depending on the material you’re processing, and the market that material will be going to, you may have to worry about strict quality requirements, so the rock may require multiple stages of processing. For some industries, coarse rock is acceptable, and the materials can go to market after secondary processing. In other cases, you may wish to employ a secondary crusher quarry to further reduce the size of the material, then a tertiary machine that will produce the fine (and uniform) materials required.
How Quarry Crushers Work
Quarry crusher machines work by using impact, compression, or grinding. Compression is the most common method, and it’s used by cone, jaw, roll and gyratory crushers. These are versatile machines that can be used on a variety of materials.
Impact crushers are commonly used with Limestone quarries, where the material is relatively porous and brittle, and therefore can be broken down easily with this technique. Secondary impact crushers make good primary crushers for certain environments because they can be fed larger materials and achieve a significant reduction in the size of the materials, offering cost-effective and rapid processing. They’re also relatively space efficient. However, since harder rocks aren’t suitable for impact crushing, these crushers aren’t suitable for use at all quarries.
Attrition crushers use a combination of grinding and crushing. These versatile crushers work well with a variety of materials. In addition, because hammermill attrition crushers have a grate at the exit of the machine, users have control over the size of the product that exits it. This helps maintain the consistency and quality of the product.
Choosing a Quarry Crusher Machine
Reliability, portability and quality are all important issues when you’re shopping for a machine for your quarry. In most cases, you’ll find yourself needing a quarry crusher plant to produce the desired grade of output materials. Consider the output rates of each machine as well as how easy it will be to transport the rock between them, to keep your operation running smoothly.