Talk about the classification of crushers

Crusher, also known as a crusher
.

It is a crushing machinery
used in the processing of metal ore and non-metal ore that can crush the mined raw ore into small particles by means of extrusion and bending.

Commonly used crushing machinery are jaw crusher, rotary crusher, cone crusher, roller crusher, hammer crusher and impact crusher
.

1.
Jaw crusher is a crushing machine
that uses the extrusion and bending effect of two jaw plates on the material, coarse crushing or medium crushing of various hardness materials.

Its crushing mechanism is composed of a fixed jaw plate and a movable jaw plate, when the two jaw plates are close to the material is broken, when the two jaw plates leave the smaller discharge port of the block from the bottom
.

Its crushing action is carried out intermittently
.

This crusher is widely used in industrial sectors such as beneficiation, building materials, silicates and ceramics due to its simple structure, reliable work and ability to crush hard materials
.

2.
The rotary crusher is a large crushing machine
that uses the swirling motion of the crushing cone in the cone cavity of the shell to squeeze, split and bend the material, and coarsely crush ore or rock of various hardness.

The upper end of the spindle fitted with the crushing cone is supported in the bushing in the middle of the beam, while the lower end is placed in the eccentric hole of
the bushing.

When the bushing rotates, the crushing cone rotates around the centerline of the machine for eccentric rotation, and its crushing action is continuous, so the work efficiency is higher than that of the jaw crusher
.

By the early 1970s, large rotary crushers were able to handle 5,000 tons of material per hour and large feed diameters of up to 2,000 mm
.

3.
The working principle of the cone crusher is the same as that of the rotary crusher, but it is only suitable for crushing machinery
with medium crushing or fine crushing operations.

The uniformity of the discharge particle size of the medium and fine crushing operation is generally higher than that of the coarse crushing operation, so a parallel zone must be set up in the lower part of the crushing chamber, and at the same time, the rotation speed of the crushing cone must be accelerated so that the material is squeezed
more than once in the parallel zone.

4.
The roller crusher is a machine
that uses the friction of the roller surface to bite the material into the crushing area and make it withstand extrusion or splitting.

When used for coarse crushing or when it is necessary to increase the crushing ratio, teeth or grooves are often made on the roller surface to increase the cleavage effect
.

Roller crusher is usually divided into single roll, double roll and multi-roll crusher according to the number of rolls, suitable for coarse crushing, medium crushing or fine crushing coal, limestone, cement clinker and feldspar and other medium hard materials
below.

5.
The hammer crusher has the advantages of large crushing ratio, uniform discharge particle size, less crushing material, low energy consumption and so on
.

However, due to the rapid wear of the hammer head, the application of hard material crushing has been limited; In addition, because the grate is afraid of clogging, it is not suitable for crushing materials
with high humidity and clay.

This kind of crusher is usually used to crush brittle materials
below medium hardness such as limestone, shale, coal, gypsum, chalk, etc.

6.
The impact crusher is a machine
that uses the high-speed impact of the plate hammer and the rebound effect of the impact plate to crush the material after repeated impact.

The plate hammer is fixed to the high-speed rotating rotor and several counter-attack plates
are arranged at different angles along the crushing chamber.