the closing of the large number of small metallurgy,coal mine and cement enterprise, large new concentrator, coal and cement plant were generally built, which means the higher request of the washing and dressing equipment was raised. The equipment of great processing capacity, high crushing screening efficiency and reliable operation is in urgent need.The common used crushing equipment includes mobile crusher, cone crusher, jaw crusher, impact crusher, sand maker, vibrating screen, sand washing machine, vibrating feeder and so on.Crushing equipment contains jaw crusher, impact crusher, cone crusher, etc. The optional crushing equipements, such as vibrating feeder, vibrating screen and belt conveyor are alse necessary. Crushing equipment is widely used in mining, metallurgical, construction, chemistry, petrochemicals, transportation, energy, building materials industry, suitable for crushing high hard, mid hard and soft rocks and ores such as iron ore, limestone, slag, marble, quartz, granite, cement, clinker and so on. Crushing equipment features large crushing rate, high yield, equal product size, simple structure, reliable operation and easy maintenance, economic operating costs etc.
The roller crusher has widely application in the industries of mining, building materials, chemical industry, metallurgy, etc. The roller crusher can crush materials with middle hardness or less than middle hardness into secondary or fine granularity, such as crushing mineral, rocks, coke, coal, slag, scoria, and fire-proof material etc.
With the development of technology, broken machinery development so far has made considerable progress. Especially after the 1990s, broken machinery production and sales increased rapidly, adding broken machinery enterprises are increasing, so many thousand broken machinery manufacturing enterprises at home, can produce 0.5 ~ 30t vibrating crusher, 4 ~ 24t static roller crusher and 16 ~ 30t specification tire crusher and other varieties of the more complete range of products, the basic form to self-development and production of a complete crusher manufacturing system, its technical level and the gap between the international advanced level is gradually reduced. This rapid growth situation, there will be pieces of broken machinery and equipment for the industry to a new period of development.
We have mentioned above that crushing equipment is the most important part in the whole crusher plant. There are many factors you need to consider
 

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