Roll crusher can be classified into various types according to the different roll surface structure, transmission mode, adjustment device and application scenarios. The following are the main classifications and characteristics:
1. Classification according to roll surface structure
Double light roll crusher
Double light roll crusher (flat roll type)
Characteristics: Smooth roll surface, crushing materials through extrusion and grinding, uniform discharge size (usually 0.5-10mm).
Applicable scenes: medium and fine crushing operation, such as limestone, river pebbles, cement clinker, construction waste and other materials with compressive strength ≤250MPa.
Advantage: simple structure, less dust, low noise, suitable for sand making and fine crushing needs.
Double Toothed Roll Crusher
Double Toothed Roll Crusher
Features: roll surface with teeth (such as wolf teeth, ring teeth), through splitting and shear force crushing materials, both pre-screening function, reduce over-crushing.
Applicable scenario: coarse and medium crushing operation, such as coal, coke, sinter ore and other brittle materials (compressive strength ≤ 160MPa), with feed size up to 1200mm.
Advantage: Strong ability to deal with viscous materials, and the differential speed design prevents clogging.
2. Classified according to the transmission mode
Triangle belt drive
Low cost, easy maintenance, suitable for small equipment (such as 2-12 tonnes per hour).
Coupling drive (hard link)
High transmission efficiency, strong carrying capacity, for medium-sized equipment (such as 20-100 tonnes per hour).
3. Classified according to adjusting device
Spring adjusting type
Automatic adjustment of roll pitch by spring compression, protecting the equipment from damage by iron and other hard objects.
Hydraulic adjustment type
Hydraulic cylinder control roller distance, high precision, fast response, suitable for frequent adjustment of the particle size of the scene (such as large-scale fully hydraulic models).
4.Classification according to application scenarios
Standard type
Universal design, suitable for mining, building materials, chemical industry and other industries in the medium and fine crushing operations.
Mobile
Mobile roll crusher
Integrated vehicle chassis, easy to transfer on-site, suitable for construction waste disposal and other temporary operations.
High temperature resistant type
The rollers are equipped with water-cooling system, which can handle high-temperature materials of 750-850℃ (e.g. sintered ore in iron and steel mills).
The selection of double-roll crusher needs to take into account the characteristics of the materials (hardness, humidity, particle size), capacity requirements and the operating environment. Example:
Coal/coke crushing: double rollers are preferred for both efficiency and overcrushing rate control;
Sand making/fine crushing: double light rollers are more economical, with flexible particle size adjustment;
Large mining projects: hydraulic drive + intelligent control models to improve stability and energy efficiency.
