2012年(464)
分类: Delphi
2012-04-24 16:32:14
1, The characteristics of raw materials
The hardness, size
distribution, clay content and water content of the raw materials is very
important parameter. Different materials should choose a different crushing and
screening machinery.
If the hardness of the raw materials is higher, we
generally choose , as
the primary crushing. When raw material hardness is small, we make the choice of
as the
primary crushing.
The grading of raw materials will also affect the
overall parameters. As for the boomed stone from quarry, it should be selected
in accordance with the maximum size of the rock. As for sand the folder gravel
layer raw materials, primary crusher should be selected according to the grading
curve, and should be configured top re-screening machinery; If raw materials
which clay and water content is high, you should consider using wet crushing,
screening processes. Overall, we should according to the granularity of
materials to select process, and according to the hardness of the raw materials
to select the form of crude crushing equipment.
2, The product quality
requirements
The quality of the product includes particle size,
product size distribution, particle shape. In different engineering, product
quality requirement is not the same. The quality of product process is related
to crushing machinery and production processes.
When the finished
products granularity is small, the crushing and screen ratio is large. The more
in product grades, the more complex of crushing equipments.
Sometimes in
order to obtain a variety of grades of gravel, we ofen set a screening machinery
alone to do grading. In many projects, gravel dust content of the compound
should not be too high, these dust is harmful to the quality of the concrete.
When the dust content is excessive, it is necessary to increase a cleaning
process.
3, Productivity
Productivity is an important
process parameters to the crushing and screening equipment. Productivity
requirements include two elements, one is the productivity of the particle size
specifications, and the other is the productivity of all products. For
engineering practice, the productivity of each particle size specifications of
the product is more meaningful. Therefore, in determining the productivity of
the equipment, you should first consider the actual needs of the
project.Secondly, be good faith oriented, adhere to corporate ethics. The state
law of the land, and family rules a home, that's right. But relying on
legislation to address the social bottom line is just the little
acorns.
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