2012年(464)
分类: Delphi
2012-05-24 14:20:29
We all know that the highway requires much higher to a variety of raw
material. As the most basic raw materials, river gravel with hard, stable nature
and excellent grain shape is preferred. River pebbles Symons can do further
processing to river pebbles, it do not necessarily to destroy the chemical
characteristics of river pebble for excellent grain type. Gathered black sand in
river pebbles, and the pebbles should account for more than half of the volume.
As river pebbles are more common to us and good in appearance, it has become an
ideal choice for paving courtyards, roads and construction.
Because stone
hardness is demanded much more, the new advanced cone crusher drives crusher
industry and leads the bright market prospects.
Building sand and stone is
necessary building materials in the construction of roads, railways, docks,
airports and nuclear power, etc. And the start of each new project requires
several or even dozens of various types of rock mine to match with. It is
understood that China plans to build 153 thousand kilometers at length highway,
but so far the national highway is 65,000 kilometers, only about 40% of the
whole plan. The railway in 2010, China railway investment has been arranged
fixed assets for 823.5 billion RMB, of which 700 billion RMB was in capital
construction. The two data have growth of 37% and 17% respectively compared with
2009. Railway construction is also in a period of rapid development.
Both
processes of crushing and grinding are suitable for the mineral particle size of
more than 5cm, which is before ore dressing process flow. And crushing process
mainly handles large pieces of ore. Grinding treatment is especially for smaller
mineral particles. Because mineral particles in the was
broken at random, the broken probability is very low, studies have shown that
the broken probability is less than 10% in the ball mill.
Roads and railways
built can't be separated from the sand and gravel aggregate, the demand for sand
and gravel production line has increased. Sand and gravel production line is
generally composed by the feeder,and centrally electric control devices. The
process is reasonable and gathering feeding, crushing, screening, conveying as a
whole. After processed, the finished product quality can be up to GB14685-2001
standard, which is qualified for the express way, rail, water, concrete mixing
plant industries aggregate.
Today, the Red Star Mining Machinery Co. has
lunched new model crushing machine, cone crusher. It is a type of hydraulic
crusher featured with advanced high-power, fine broken and high productivity. It
is applicable to the fine crushing and ultra-fine crushing for hard rock, ore,
slag and refractories.