Gyratory cone crushers

PRIMARY AND SECONDARY CRUSHERS Gyratory Cone Crushers... 

Hard and tough Mica Scrap and powdered metals Jaw crushers Gyratory crushers Cone crushers Autogeneous mills Ball, pebble, rod and cone mills Tube mills Vibration mills Ball, pebble and cone mills Tube mills Vibration and vibro-energy mills Fluid-energy mills Moh s hardness 5-10, but includes other tough materials of lower hardness... 

Crushers and grinders Cone crusher Gyratory crusher Jaw crusher Hammer mill... 

Jaw crushers Gyratory crushers Cone crushers Autogeneous mills... 

Jaw crushers Gyratory crushers Roll crushers Edge runner mills Impact breakers Autogeneous mills Cone crushers... 

Fig. 1 Schematic representation of the operating principle of a gyratory cone crusher.

The gyratory crusher shown in Figure 2.6 employs a crushing head, in the form of a truncated cone, mounted on a shaft, the upper end of which is held in a flexible bearing, whilst the lower end is driven eccentrically so as to describe a circle. The crushing action takes place round the whole of the cone and, since the maximum movement is at the... 

Beneficiation. Iron ore coming from the mine must be properly sized. A gyratory crusher is normally used for primary crushing down to approximately 300 mm (see Size reduction). Secondary crushing down to 25 mm can be done in a cone crusher. Fine grinding can be done by rod mills followed by either ball or pebble mills. In some cases, autogenous grinding can be used to replace the cone cmsher and rod mills. 

Primary crushers used are jaw, gyratory, impact, and toothed roll crushers. Impact mills are limited to limestone and softer stone. With rocks containing more than 5 percent quartz, maintenance of hammers may become prohibitive. Gyratory and cone crushers dominate the field for secondary crushing of hard and tough stone. Rod mills have been employed to manufacture stone sand when natural sands are not available. 

Scrap and powdered Gyratory crushers cone mills mills but includes other... 

The so-called drug mill consists of a cone revolving within another cone (or both surfaces may be curved) without eccentric motion, wherein it differs from the gyratory crusher. These surfaces usually have corrugations on them so that comminution is mainly a matter of shredding and tearing rather than of crushing or abrasion. 

Primaiy crushers have a steep cone angle and a small reduction ratio. Secondaity crushers have a wider cone angle this allows the finer product to be spread over a larger passage area and also spreads the wear over a wider area. Wear occurs to the greatest extent in the lower, fine-crushing zone. These features are further extended in cone crushers therefore secondary gyratories are much less popular than crushers, but they can be used as primaries when... 

Gyratory crusher was described earlier. The sketch shows the cone-shaped element rotating in a tapered passage. Gyratories are made to handle even larger lumps than jaw crushers. Very large lumps are broken first by explosives or pneumatic hammers before feeding to crushers. 

Compression is the most usual comminution force for brittle materials. Materials are compressed between two heavy-duty metal surfaces. Crushers based on compaction force are jaw, cone, gyratory, and roll crushers. These are most widely used to reduce the size of coarse rocks and minerals particles. In soUd waste treatment, their use is not widespread, because compression force, in most cases, simply deforms the materials but does not change their size (e.g., metals, paper, plastic, organics). 

Jaw crusher feed diameter 0.1 to 1.5 m reduction ratio 5 1 to 10 1 capacity 1 to 300 kg/s Mohs hardness <9 (reduction by compression). Gyratory crusher feed diameter 0.75 to 1.5 m reduction ratio 5 1 to 10 1, usually 8 1 capacity 140 to 1,000 kg/s Mohs hardness <9. More suitable for slabby feeds than jaw crusher (reduction by compression). Roll crusher feed diameter 1 cm reduction ratio 5 1 to 10 1 capacity 0.3 to 20 kg/s Mohs hardness <7.5. Suitable for softer, friable, and nonabrasive materials. OK for wet and sticky materials. Cone crusher and short head cone feed diameter <25 cm reduction ratio 5 1 to 10 1, usually 7 1 capacity 5 to 300 kg/s Mohs hardness <8. Usually secondary or tertiary crusher. Impact crusher pulverizers, shredders, or smooth roll feed diameter 1 cm with a reduction ratio of 7 1 to 10 1 capacity 0.3 to 50 kg/s. Mills, hammer, feed diameter 10 mm, reduction ratio 10 1 to 50 1, capacity 0.01 to 5 kg/s Mohs hardness <4.5. Maximum fines feed not hard or abrasive. Mills, ball, and rod feed diameter 0.5 mm with a reduction ratio of 10 1 to 50 1 Mohs hardness <9. Mills, autogenous, semiautogenous feed diameter 200 mm, reduction ratio 10 1 to 50 1 capacity 0.1 to 100 kg/s Mohs hardness <6. Mills, fluid energy feed diameter 50 pm reduction ratio 10 1 to 50 1 capacity <2 kg/s Mohs hardness <4.5. 

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