To use ores and rocks obtained through explosion or quarrying in the construction and mining sectors, the materials have to be crushed so that they are reduced to smaller sizes. This process is known as crushing or size reduction.
The Jaw Crusher is mainly used for primary or secondary crushing. This type of machinery is usually the preferable choice to crush large blocks or boulders of abrasive and hard materials.
How Does A Jaw Crusher Work?
All types of jaw crusher for sale include two jaws. The one moves, while the other is fixed. Jaw crushers work on reciprocating movements of the jaw that crushes and compresses ore or rock between the jaw that is fixed and the jaw that moves. This occurs as the materials enter a specific zone located between each jaw.
What Is The Goal Of Size Reduction
Jaw crushers are mainly used to break up ore and rocks into more manageable pieces. Here is an overview relating to the aim of size reduction:
– Obtaining the surface area or size required to use ore or other types of similar materials.
– Allow for an easier way to store or transport the materials.
– To separate the minerals contained in ore or to release these minerals from each other.
– To obtain the surface area or size needed for an enrichment stage.
In the majority of cases, crushing usually involves three stages, which will depend on the required or desired size relating to that material.
1. Primary Crushing
This is the initial stage used to crush materials. The feed material is usually between 800 and 1,500mm, which is then broken down to between 150 and 300mm.
2. Secondary Crushing
Once the feed size is reduced to around 150 to 300mm, of the ore or rock from the first stage of crushing, the materials are further reduced to between 50 and 80mm.
3. Tertiary Crushing
This is the final crushing stage where the materials between 50 to 80mm are broken down again to between 5 and 12mm.
The Components Of A Jaw Crusher
Jaw crushers from AimixPlant.Lk are typically classified by the opening size.
For example, the 900 X 650mm crushers have an inlet that measures 900mm by 650mm. The main components of jaw crushers include the following:
– Feed chute
– V-belts
– Drive flywheel
– Electric motor
– Damping groups and settings
– Motor stand
– Toggle plate
– Swing jaw
– Fixed jaw
– Discharge
– Hydraulic cylinder
Types Of Jaw Crushers
Jaw crushers fall under two categories and are defined by the movement mechanism of the jaw. These two main types include the:
– Double-Toggle Jaw Crusher
– Single-Toggle Jaw Crusher
When comparing crusher machine that share the same or similar capacities, the double-toggle jaw crushers will be a more expensive investment when compared to the single-toggle jaw crushers. This is why the single-toggle versions are mainly used in aggregate sectors and the double-toggle versions are mainly used for crushing extremely abrasive and hard materials. At the same time, the lifespan of a double-toggle jaw crusher is usually longer since these machines don’t apply “friction” force.