Roll crusher is a specific type of
heavy-duty equipment and is widely used in industrial and mining
processes. A common roller crusher consists a couple of big
cylinders, positioned on a horizontal axis. Between these two
cylinders, the raw materials are being crushed in small pieces. So,
the
roll crusher is suitable to a broad range of applications and
most suitable to coal mining, concrete recycling and mineral
production applications.
A typical roll crusher is consisted of
two cylinders, both featuring a ceramic or steel finish. Above the
two rollers, there is a hopper that drops the materials down through
the gap between the cylinders. To crush the materials, the rolling
cylinders rotate in opposite directions and so smash the materials
between as they fall downwards. The friction between the cylinders
efficiently crushes any material, then falls down into a so-called
collection bin. But prior any use, the contractors must adjust the
space between the rolling cylinders in order to get the desired size
of the crushed particles.
The roll crusher surface is usually
smooth, but some models feature a textured surface. That depends on
the application; for crushing more delicate materials (metals,
minerals, etc.), smooth roll crusher surface is most suitable, while
for crushing rocks and similar heavy materials, textured surface is
recommended. Some applications can not be efficiently carried out
with a double roll crusher. However, there is a way to carry out such
application using a roll crusher with four cylinders. A four-cylinder
roll crusher takes a material to pass through the first two cylinders
first, and then into the second pair of cylinders, mounted just below
the first pair. The second pair of cylinders is used for crushing the
materials once again, in order to achieve a better and finer product.
Four-cylinder roll crushers have a
very simple and compact design, which contributes to very small
maintenance costs. Also, they effectively produce materials of same
size, in order to make the rest of the production process easier. The
roll crusher might be the most cost-efficient unit for processing
small loads of materials, but it surely is not a good choice for
large production capacity. The roll crusher surface is not made from
heavy-duty materials, which means it can easily get damaged by some
abrasive or rough material, leading to expensive repair or part
replacement.
So, when considering a roll crusher,
the prospective operators must think about the total production
capacity of the unit they expect. Also, they need to consider the
size, the abrasiveness and the roughness of the materials they will
process with the roll crusher.
