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 cone crusher 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 ball mill 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