Benefited from the country’s support for infrastructure projects, the construction machinery market has gone through a glorious period of development, but because of market supervision and macro-control is not in place, blind investment of excess capacity, low capacity equipment innovation and other issues slap in the face to a large number of investors, many engineering machinery and equipment manufacturing enterprises began to shift the direction of development, in order to gain a firm foothold in the fierce market competition.
Crusher is used to reduce large rocks into smaller rocks, gravel, or rock dust. It may reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or reduce the size of a solid mix of raw materials, so that pieces of different composition can be differentiated. It has advantages of big reduction ratio, reliable operation, high productivity, lower operational costs and easy repair. With the rapid advancement of mineral resources integration utilization technique, the 2012 national total ore mining is more than 50 million tons, and crusher as one of the most important equipment in ore mining, has been widely used in resource exploitation and mine construction.
In industry, crushers are machines which use a metal surface to break or compress materials. Mining operations use crushers, commonly classified by the degree to which they fragment the starting material, with primary and secondary crushers handling coarse materials, and tertiary and quaternary crushers reducing ore particles to finer gradations. Each crusher is designed to work with a certain maximum size of raw material, and often delivers its output to a screening machine which sorts and directs the product for further processing. Typically, crushing stages are followed by milling stages if the materials need to be further reduced. Hydraulic cone crusher has advantages of all-hydraulic operation, easy to use; simple structure, easy operation; reliable performance, stable operation and adopting lamination crushing theory, reducing the pin sheet material.
In the first half of 2012, the coal industry overcapacity, oversupply, slowdown in the domestic infrastructure construction project approval, construction machinery market has caused some impacts. In the second half of the year, however, this situation has improved, the data show that the Development and Reform Commission approval of the project in July 89, these projects are more concentrated in the area of clean energy.
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