Table of Contents
How can I increase my crusher production?
Jaw crushers are routinely choke fed, as this maximizes production capacity and ensures particles are uniformly broken. This promotes stone-on-stone crushing, breaking up flaky or slabby particles. If you seek fewer fines, trickle feeding material into the jaw crusher could achieve this.
How is crusher capacity calculated?
Example capacity calculation of a 10″ x 20″ (250 mm x 500 mm): Pp = 2800 (2.8 SG) e = 0.2 (halfway between dolomite and sandstone) A = 250/1000 x 500/1000.
Which type of crusher have more reduction ratio?
Gyratory and Cone Crusher The gyratory crushers crush to reduce the size by a maximum of about one-tenth its size. Usually, metallurgical operations require greater size reduction; hence, the products from the primary crushers are conveyed to secondary or cone crushers where further reduction in size takes place.
What is reduction ratio in crushing?
In crushing, the ratio of the size of the largest feed particle to the smallest distance between the roll faces. As used frequently in the field, it is the ratio of the smallest aperture passing all of the feed to that passing all of the product.
How do I adjust my jaw crusher gap?
JAW ADJUSTMENT Two spring rods located on the back of the crusher control tension of the toggle. The hex nut on the side of the frame adjusts the movable jaw gap. To INCREASE the particle size adjust the large hex nut on lower frame counter- clockwise to desired size. Re-tighten spring rods no more than hand tight.
How do I choose a crusher?
How to choose a crusher?
- The abrasiveness and hardness factor. It is essential to know what material is going to be crushed, in particular its abrasiveness and hardness.
- The dimensions.
- Granulometric requirement.
- The capacity (throughput).
How do you adjust a jaw crusher?
What is reduction ratio of crusher?
The Reduction Ratio is broadly defined as the ratio of the feed size to the product size in any crushing operation. It can also be used as a partial indicator of the stresses the crusher will be subjected to during operation, an element in determining the crusher capacity and as an indicator of crusher efficiency.
How can I lower my gear ratio?
The “reduction” or gear ratio is calculated by dividing the number of teeth on the large gear by the number of teeth on the small gear. For example, if an electric motor drives a 13-tooth pinion gear that meshes with a 65-tooth gear, a reduction of 5:1 is achieved (65 / 13 = 5).
What is the most economical type of Crusher to use?
For the primary crusher a jaw crusher will probably be most economical. A jaw crusher, like 2036 in the Jaw Crusher Table here above, would be able to take the maximum 12 in. size quarry stone but it would not have the required 70 tph capacity needed.
Can a roll crusher be operated with a closed circuit?
If the output of this crushing process should have less material of the +1-in. size, the larger crusher could be operated with a closed circuit. That is, the oversize in the output could be recirculated through the roll crusher without exceeding the rated capacity of the crusher.
How to find the required areas of screen for a crusher?
To find the required areas of screen, the rate of feed of material as well as gradation of the feed must be known. The 1½-in. screen under the jaw crusher is the top deck—no deck correction factor will be necessary. Therefore, the 1½-in. screen will need to be at least 70/2.7 = 29.9 sq ft in area.
What is the maximum size of a rock crusher?
Quarry rock of 12 in. maximum size is to be handled in a two-stage crusher plant at the rate of 70 tons per hour. The maximum size of output is to be 1½ in., and separation of materials over 1 in. size and the minus 1 in. in the output is required.
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