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Usually, the energy consumption for the crushing operations (including screening and transport) of the concentrators accounts for about 10% of the total energy consumption. The experts analyze this situation according to the laminating crushing concept. When the granular materials account for more than 40% of the crushing volume, the laminated crushing can be achieved in the crushing process. In addition, according to the sufficient feeding situation and the uniform degree of the feeding hopper of the extrusion crusher machine, when the filling degree of the materials reaches 55%, the lamination crushing requirements can be completely satisfied.

After the energy saving and emission reduction work of the 'Eleventh Five-Year' having achieved certain results, China will identify the reduction in energy consumption intensity and decrease in major pollutants emissions as the blinding target of the national economy and social development in 'Twelfth Five-Year', the energy consumption and emission reduction as the breakthrough of adjusting economic restructuring and accelerating the change of economic development mode. However, in the current economic development trend, the energy consumption and the dump of the rubbish caused by the rapidly development of urbanization are the focus of energy conversation and emission reduction.

In order to keep the stable and rapid development of national economy, China has spend considerable human and materials resources on the infrastructure construction, although the urban construction has achieved certain results, and the transportation construction on various regions of China gradually perfects, however, the consumed energy and the discharging of the major pollutants in the rapid development stage of urban development rise significantly, especially the rising velocity of the building rubbish and the energy consumption in producing building materials is relatively fast. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery,

Building materials are the essential necessities of China's urban construction, in order to meet the production demand of building sand aggregate, the customers who want to equip with sand production line and crushing equipment are growing rapidly. But this large mining machinery equipment easily causes the energy excessive consumption under the high strength working environment. In order to save the customers' production cost and reduce the China's energy consumption, choosing formal energy saving crushing equipment is the top priority of positively cooperating planning work.

The other primary problem is the produce and dump of the building wastes that caused the China's pollutants discharging, which not only occupies a lot of land, but also pollutes the environment through the spread of the dust and other rubbish. In order to solve the problems of rubbish stacking and energy consumption, Hongxing has developed a series of new crushing machines, such asjaw crusher machine, sand making machines, etc, which can reuse these building wastes as the renewable materials through crushing and processing. After having been researched and adjusted, the energy consumption of the equipment has greatly reduced, which reduces the power and energy costs of the customers' at the same time.

At present, the broken theory, the study of the processes and equipment mainly focus on the research on the theory of energy-saving and efficiency of the crusher machine. The development of anything can not be separated from the its root. The development and research of the new high-efficiency crusher machine must be began from the theory. We must make full use of the secondary crushing. In this way, the crushing efficiency can be improved greatly.