Contents :
- Gyratory Crusher
- Principal, Construction and Working of Gyratory Crusher
- Features of Gyratory Crusher
- Difference between Gyratory Crusher and Jaw Crusher
- Difference between Gyratory and Cone Crusher
- Gyratory Crusher Advantages and Disadvantages
Principle :
It works on the principle of compression.
Construction :
• It consists of a funnel shaped casing, open at the top. A conical crushing head, in the form of a truncated cone, gyrates inside a casing. The crushing head is mounted on a heavy shaft pivoted at the top of the machine.
• The upper end of the shaft is held in a flexible bearing and the lower end of the shaft is driven by an eccentric so as to trace a circle.
• Thus, at any point on the periphery of the casing the bottom of the crushing head moves towards, and then away from the stationary wall. The crushing action takes place around the whole of the cone.
Working :
• The material to be crushed is charged from the top. The conical head gyrates inside the casing. At any point on the periphery of the casing, the bottom of the crushing head moves towards and then away from the stationary wall.
• The solids caught in the V-shaped space between the head and the casing are broken and rebroken until they drop out from the bottom of the machine. The speed of the crushing head usually lies between 125 to 425 gyrations per minute.
• Since some part of the crushing head is working at all times, the discharge from this crusher is continuous instead of intermittent as in a Blake crusher.
Features :
• 1. continuous in action 2. fluctuations in stresses are smaller 3. load on the motor is nearly uniform 4. power consumption per ton of material crushed is smaller and 5. requires less maintenance than a jaw crusher.
• Since the capital cost of this crusher is high, it is suitable only where large quantities of materials are to be handled.
Difference Between Jaw Crusher and Gyratory Crusher :
(i) It is a reciprocating machine.
(i) It is a gyratory machine.
(ii) Intermittent in action, i.e., discharge is discontinuous.
(ii) Continuous in action, i.e., discharge is continuous.
(iii) It is a primary crusher. It takes a feed of larger size.
(iii) It is a secondary crusher. It takes a feed of smaller size.
(iv) The load on the motor is not uniform.
(iv) The load on the motor is nearly uniform.
(v) More maintenance is required.
(v) Less maintenance is required.
(vi) Power consumption per ton of material crushed is more.
(vi) Power consumption per ton of material crushed is lower.
(vii) Capital cost is relatively low.
(vii) Capital cost is high.
(viii) It has smaller capacity when used to produce/effect a small size reduction.
(viii) It has large capacity when used to produce/effect a small size reduction.
Also Read : Ball Mill
FAQs :
How does a gyratory crusher work ?
• The material to be crushed is charged from the top. The conical head gyrates inside the casing. At any point on the periphery of the casing, the bottom of the crushing head moves towards and then away from the stationary wall. • The solids caught in the V-shaped space between the head and the casing are broken and rebroken until they drop out from the bottom of the machine. The speed of the crushing head usually lies between 125 to 425 gyrations per minute. • Since some part of the crushing head is working at all times, the discharge from this crusher is continuous instead of intermittent as in a Blake crusher.
What is gyratory crusher?
A Gyratory Crusher is a large crushing machinery, using the gyratory sports in casing cone cavity of crushing cone to produce extrusion, fracturing and bending role to materials for crushing ore or rock of various hardness. Gyratory crusher is composed of transmission, engine base, eccentric bushing, crushing cone, center frame body, beams, original dynamic part, oil cylinder, pulley , appliances and dry oil, thin oil lubrication system components etc.
What is features of Gyratory Crusher ?
1. continuous in action 2. fluctuations in stresses are smaller 3. load on the motor is nearly uniform 4. power consumption per ton of material crushed is smaller and 5. requires less maintenance than a jaw crusher. • Since the capital cost of this crusher is high, it is suitable only where large quantities of materials are to be handled.