Roll Crusher

With working hardly days and nights, Chief Engineer Yang and R&D team achieve a scientific research, which is the new roll crusher of Henan Hongxing Mining Machinery Co., Ltd.  This crusher is widely used in crushing middle and high hardness materials in metallurgy, building and refractory industries.

The roll crusher is compression type crusher, and  it is made up of roller, bearing , adjusting device and driving device etc.
How does roll crusher adjust the output granularity?

There are adjusting devices (wedge or gasket) between two rolls, with adjusting bolts fixed on the top of wedge. When adjusting bolts hang up wedge, the wedge will drive moving roll away from fixed roll. 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. 

Roll crusher is mainly used for the crushing of medium or lower-hardness mines and rocks in mine selection, chemicals, cement and building materials industrial production.

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.

Usually, these crushers will have teeth or raised forms on the face of the roll. Roll crushers used for minerals and metal ores have smooth faced rolls.

 This series of crusher is used for crushing of ores and rocks, the advantages are: reliable structure, high efficiency, easy-to-adjust and economical. The safety spring system is the overload protection device, which makes foreign material goes through the machine without bring any hurt to it. The sealing modes are oil and water, which segregate the stone powder and lubricting system. The crushing chamber is decided by the purpose of ore, the standard model is suitable for medium crushing; the medium model is suitable for fine crushing and the short head model is suitable for fine crushing.