stone Production line

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  • non-pollution stone Production line
  • stone production line for road
  • non-pollution line for ore grinding

Machine Knowledge

Double Roll Crusher

Double Roll Crusher

Double-roller crusher (2-roller crusher) is used to process mid-hard materials in the cement, chemical, electric, metallurgical, building materials, fireproof material, etc, industries. Such as: crushing limestone, slag, coke, coal, etc, these mid-hard materials secondly and finely.
This series of 2-roller crushers are mainly consisted of roller wheel, roller wheel supporting bearings, regulation device and driving device and so on.

Main features:
Double Roll Crusher is widely used in the field of beneficiation, metallurgy, coking chemical industry, building materials, and refractory materials. It has a superior effect than common grinding machines in producing building materials such as pisolites and pea gravels.

Roll crusher Working principle:

The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls. Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Rolls crushers are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. ( used for minerals and metal ores have smooth faced rolls.)

Technical Parameter :

Model PG200×100 PG400×250 PG610×400 PG750×500
Roller Diameter( mm) 200 400 610 750
Roller Length( mm) 100 250 400 500
Roller Rotary Speed (r/min) 400 200 75 60
Charge Granularity( mm) <10 <25 <70 <90
Discharge Granularity (mm) 0-4 0-8 0-30 0-50
Output( t/h) 4-8 6-10 15-30 30-50
Motor Power( kw) 1.5 5.5 15 22
Weight(kg) 150 1200 3500 5800

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