The performance of sand production line can be judged according to
product quality. There are two main product quality indicators: the
ratio of needle-flake particles and powder content.
According to experts, the national building materials standards have
clear provisions for sand and gravel, where the needle-like particles of
sand and gravel exceed a certain range, even if they are not qualified.
Nowadays, the construction materials for high-speed railway, highway
and water conservancy
line can effectively avoid the increase of needle-like fragments. Jaw
crusher, counterattack crusher and cone crusher produced by large
manufacturers are the key equipment to avoid the increase of needle-like
The national standard also requires the content of powder. If the
content of powder is too large, it is also considered that the sand and
stone materials are not qualified, and can not be used in large-scale
projects. Many large stone factories specialize in supplying stone for
high-speed railway construction and high-speed construction, but after
the production line is put into operation, the output can not meet the
needs of Engineering construction. Such production line is not
qualified, and its harm is very serious. We hope that the majority of
manufacturers and investors will pay attention to it.