Roller crusher

Roller Crushers are compression type crushers, and were once widely used in mining. They have, within the last 10 or so years, fallen into dis-favor among mining and processing companies. The probable reason is because the large mines require very large crushed product output with minimal cost, makes the roll crusher uncompetitive. The Roller crushers are not nearly as productive as cone crushers, with respect to volume, and they do have a little higher maintenance associated with them. Roller crushers do, however, give a very close product size distribution, and if the ore is not too abrasive, they do not have high maintenance costs. Roll crusher is mainly used for the crushing of medium or lower-hardness mines and rocks with medium or lower rigidity in mine selection, chemicals, cement and building materials industrial production.
Roller crushers have a theoretical maximum reduction ratio of 4:1. If a 2 inch particle is fed to the roll crusher the absolute smallest size one could expect from the crusher is 1/2 inch. Roller crushers will only crush material down to a minimum particle size of about 10 Mesh (2 mm). A roll crusher crushes using compression, with two rolls rotating about a shaft, towards the gap between the rolls. The gap between the rolls is set to the size of product desired, with the realization that the largest feed particle can only be 4 times the gap dimension.
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 Roller 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 Roller crushers, currently, though. Coal plants will use Roller 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. (Roller crushers used for minerals and metal ores have smooth faced rolls.)
Technical parameters of :

Type  Model Material-in size（mm） Material-out size（mm） Capacity（m3/h）  Power （kw） Overall dimensions（mm） Weight （kg） Force double roller crusher 2PGQ 610×400 〈36 2-9 3-9 22 1785×2365×1415 3800 2PGQ 750×500 〈40 2-10 5-12 18.5×2 2720×2700×1400 10800 2PGQ 750×700 〈40 2-10 6-16 22×2 2800×3987×1705 12200 2PGQ 900×500 〈40 2-10 9-30 22×2 2750×1790×2065 15000 2PGQ 900×900 〈40 2-10 11-45 ～37×2 2750×2180×2065 16800 2PGQ 900×1200 〈40 3-10 15-60 ～55×2 2750×2480×2065 20800 2PGY 1200×1000 〈40 3-12 10-50 ～55×2 3690×3430×2700 46820 2PGY 1200×1200 〈40 3-12 18-68 ～75×2 3690×3630×2700 48600 Four-roller crusher 4PG750×500 30-60 2-10 3-10 18.5+11/17 2760×3585×2650 19200 4PG900×700 40-100 2-10 16-20 30+12/24 3150×4175×3147 28700 4PG900×900 40-100 2-10 20-25 45×2 3150×2650×3147 31386 4PGY1200×1000 20-40 3-10 43-68 75+40/55 5410×5600×3600 67000 Double-roller crusher 2PGC450×500 100-200 25-100 12-32 <11 2260×2206×766 3100 2PGC600×750 300-600 50-125 50-75 <22 3265×2850×1310 7400 2PGC900×900 <800 75-150 60-110 <30 3945×3405×1895 13670 2PGC920×1200 <800 40-100 90-150 <75 3848×3480×1394 16730 2PGC1200×1500 <1000 -100 150-250 2*55 8010×4050×2050 52000

Yu Feng Heavy Industry is a leading domestic manufacturer of Roller crusher manufacturer,sales to many countries and regions around the world.Please contact our Roller crusher department,in order to know more information about Roller crusher.