Introduction:
Jaw crushers are one of the most commonly used primary crushers in the mining and quarrying industry. They are designed to crush the toughest materials such as granite, basalt, and concrete. A jaw crusher operates by compressing the rock between an eccentrically gyrating spindle and a fixed plate. The size reduction of the rock is achieved by the action of the two plates moving together and apart. One of the critical factors that affect the performance of a jaw crusher is its capacity. The capacity of a jaw crusher refers to the maximum amount of material that can be crushed by the crusher in one cycle of operation.
Factors Affecting Jaw Crusher Capacity
The capacity of a jaw crusher is determined by several factors. These factors include:
Feed Size: The size of the material being fed into the crusher is a crucial factor in determining the capacity of the crusher. The larger the size of the material, the lower the capacity of the crusher.
Closed Side Setting: The closed side setting (CSS) of a jaw crusher refers to the distance between the fixed jaw plate and the moving jaw plate. The CSS affects the capacity of the crusher. A smaller CSS results in a higher capacity.
Eccentric Throw: The eccentric throw of a jaw crusher is the distance that the swing jaw travels relative to the fixed jaw during one cycle of operation. The eccentric throw affects the capacity of the crusher. A larger eccentric throw results in a higher capacity.
Stroke: The stroke of a jaw crusher is the vertical distance that the swing jaw moves during one cycle of operation. The stroke affects the capacity of the crusher. A longer stroke results in a higher capacity.
Material Density: The density of the material being crushed affects the capacity of the crusher. A denser material requires more energy to crush, which results in a lower capacity.
Wear: The wear of the jaw plates and liners affects the capacity of the crusher. As the wear increases, the capacity decreases.
Jaw Crusher Capacity Calculation
To calculate the capacity of a jaw crusher, the following formula is used:
C = (k * W * L) / (S)
Where C = Capacity in tonnes per hour k = Constant representing the proportionality factor W = Width of the jaw opening in metres L = Length of the jaw opening in metres S = Stroke of the swing jaw in metres
The value of k depends on the type of jaw crusher and the nature of the material being crushed. For most applications, a value of 0.9-1.0 is used.
Example: Let’s calculate the capacity of a jaw crusher with the following specifications:
Width of the jaw opening = 1.2 metres Length of the jaw opening = 1.8 metres Stroke of the swing jaw = 0.2 metres Material density = 1,000 kg/m3 CSS = 0.05 metres Eccentric throw = 0.1 metres Wear = 30%
k = 0.9 (for a standard jaw crusher) W = 1.2 metres L = 1.8 metres S = 0.2 metres
C = (0.9 * 1.2 * 1.8) / (0.05 + 0.1 + (0.2 * 0.2 * 3.14 / 4)) * (1 – 0.3) C = 6.9 tonnes per hour
How do you calculate jaw crusher capacity?
To calculate the capacity of a jaw crusher, you need to use the following formula: C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
What is the capacity of jaw crusher per hour?
The capacity of a jaw crusher per hour can be calculated using the formula C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
What is the production capacity of jaw crusher?
The production capacity of a jaw crusher refers to the maximum amount of material that can be crushed by the crusher in one cycle of operation. This capacity can be calculated using the formula C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
What is the maximum feed size for a jaw crusher?
The maximum feed size for a jaw crusher is the largest size of material that can be accepted by the crusher. It is important to ensure that the maximum feed size is not exceeded as this can cause the crusher to become overloaded and lead to reduced capacity or even damage to the crusher.
Capacity of jaw crusher formula The capacity of a jaw crusher can be calculated using the formula C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
Jaw crusher size and capacity The size and capacity of a jaw crusher are important factors to consider when selecting a crusher for a particular application. The size of the crusher refers to the dimensions of the crushing chamber, while the capacity refers to the maximum amount of material that can be crushed by the crusher in one cycle of operation.
Jaw crusher manual pdf A jaw crusher manual provides information on the operation and maintenance of a jaw crusher. It typically includes information on the installation and setup of the crusher, as well as instructions on how to operate and maintain the machine. A jaw crusher manual can be a useful resource for operators and maintenance personnel.
Jaw crusher sizes Jaw crushers come in a variety of sizes, ranging from small or mini crushers that are used in laboratories or small-scale crushing applications, to large industrial crushers that can crush hundreds of tonnes of rock per hour. The size of a jaw crusher is determined by the dimensions of the crushing chamber.
Reduction ratio of jaw crusher The reduction ratio of a jaw crusher refers to the ratio of the size of the feed material to the size of the crushed product. It is an important factor to consider when selecting a jaw crusher for a particular application, as it can affect the performance and efficiency of the crusher.
Gyratory crusher A gyratory crusher is a primary crusher that is used in the mining and aggregate industries. It consists of a fixed concave surface and a conical head, both of which are typically lined with manganese steel. The material is crushed
What is a jaw crusher?
A jaw crusher is a machine that is used to break down large pieces of rock into smaller, more manageable pieces. It consists of a fixed jaw and a movable jaw that are arranged in a “V” shape, with the movable jaw being pivoted at the top.
How do you calculate the capacity of a jaw crusher?
The capacity of a jaw crusher can be calculated using the formula C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
What is the production capacity of a jaw crusher?
The production capacity of a jaw crusher refers to the maximum amount of material that can be crushed by the crusher in one cycle of operation. This capacity can be calculated using the formula C = (k * W * L) / (S), where C is the capacity in tonnes per hour, k is a constant representing the proportionality factor, W is the width of the jaw opening in metres, L is the length of the jaw opening in metres, and S is the stroke of the swing jaw in metres.
What is the maximum feed size for a jaw crusher?
The maximum feed size for a jaw crusher is the largest size of material that can be accepted by the crusher. It is important to ensure that the maximum feed size is not exceeded as this can cause the crusher to become overloaded and lead to reduced capacity or even damage to the crusher.
What is the importance of the capacity of a jaw crusher?
The capacity of a jaw crusher is an important factor to consider when selecting a crusher for a particular application. If the crusher is not able to handle the volume of material being fed into it, it can become overloaded and lead to reduced efficiency or even damage to the machine. On the other hand, if the crusher has excess capacity, it may be more expensive than necessary.
What is a jaw crusher manual?
A jaw crusher manual provides information on the operation and maintenance of a jaw crusher. It typically includes information on the installation and setup of the crusher, as well as instructions on how to operate and maintain the machine. A jaw crusher manual can be a useful resource for operators and maintenance personnel.
What is the reduction ratio of a jaw crusher?
The reduction ratio of a jaw crusher refers to the ratio of the size of the feed material to the size of the crushed product. It is an important factor to consider when selecting a jaw crusher for a particular application, as it can affect the performance and efficiency of the crusher.
What is a gyratory crusher?
A gyratory crusher is a primary crusher that is used in the mining and aggregate industries. It consists of a fixed concave surface and a conical head, both of which are typically lined with manganese steel. The material is crushed between the two surfaces as it moves downwards through the crusher. Gyratory crushers are often used for large-scale mining operations where high capacity is required.
Conclusion:
In conclusion, the capacity of a jaw crusher is affected by several factors, including the feed size, closed side setting, eccentric throw, stroke, material density, and wear. To calculate the capacity of a jaw crusher, a formula that takes into account.
