While primary crusher is for the robust, secondary crusher is for fine and optimized results and versatile impact crushers are used in all crushing stages.
We are all aware that irrespective of the type of equipment used, the objective behind mechanised crushing is the same, which is, to be able to reduce the size of rocks and supply the same to the market as per the requirement.
Different type of crushers are used on site based on the individual requirements.
So, what does the choice of the crusher depend on?
These are the two factors that matter -
1. The material to be processed
2. Ideal size of the final product
The positives of each crusher model must be analysed thoroughly before opting for the same.
It is worth while to consider the below-listed aspects before the purchase of the crusher.
- Operational conditions
- Maintenance needs
- Economic aspects
- Technological aspects
Customers usually opt for that technology which works effectively to increase productivity.It is common knowledge that stone crushers can be classified into compressive crushers and impact crushers.
While compressive crushers press the material till it breaks, impact crushers uses the ‘principle of quick impact’ to crush the material.
Jaw crushers, cone crusher and gyratory crusher use the principle of compression.
Another way to distinguish the crusher machine is according to the stages in which it is employed. While jaw or gyratory crushers are used in primary crushing, cone crushers are used in secondary crushing.
Jaw crushers were the first to be invented and they were primarily employed to reduce the size of the large materials and also to operate with high volume in primary crushing.
The reduced materials from the jaw crushers can be transported to the next crushing stage by conveyors. Another major advantage of jaw crushers is that it can be used for recycling operations.
What more, the installation and maintenance of jaw crusher is also easy.
Gyratory crushers that have an oscillating shaft are often used in the primary crushing stage. The material is fragmented because of continuous compression that take place between the liners around the chamber. It has a hydraulic setting adjustment system which regulates the gradation of the crushed material.
Cone crushers are quite popular in secondary, tertiary and quaternary crushing stages. They have a hydraulic setting adjustment system which adjusts the closed side setting and thus affects product gradation.
The cavity of the cone crusher should be filled with rock material so that operating costs are optimized and the product shape is improved.
While primary crusher is for the robust, secondary crusher is for fine and optimized results and versatile impact crushers are used in all crushing stages.
Impact crushers are classified into horizontal shaft impact crushers and vertical shaft impact crushers.
Horizontal shaft impactors are used in primary, secondary or tertiary crushing stages. Better-shaped product is achieved by using horizontal shaft impactors.
Vertical shaft imapactors are used in the last stage of the crushing process, especially when the end product is required to be a cubical shape.
To sum it up, lesser costs and greater capacity dictates the choice of crusher in today’s world.
It is interesting to note that costs have been reduced but production and energy efficiency has increased over the decades that crushers have evolved.
Automation and AI are ruling the roost and it is certainly paving the way for the development of the crushing industry today.
