As we all know, Ningxia is located in the Loess Plateau, north to the Inner Mongolia Autonomous Region, west to Gansu, east to Shaanxi. Since ancient times Ningxia to where adjoins internal Central Plains, the West through Central Asia, north desert, is a busy area for frequent contacts of each nation. Ningxia is rich in mineral resources, where minerals has been found nearly 50 kinds and original places nearly one thousand. A number of experts in Zhengzhou Hongxing Machinery Manufacturing Co. did in-depth research to its resources. They created a series of mineral resources processing equipment, including crushers and impact crusher.
    With higher hardness, river pebbles has the highest silicon content. Therefore, design to river pebble crushing process should be reasonable. While considering the investment cost of broken items, we must consider the cost of production line. When the raw materials, river gravel, in crushing operations, wear parts such as the jaw plate, the plate hammer, the back plate is very easy to wear. Therefore, in the design of the crushing process, we had better select crushing equipment with the laminated principle so as to reduce the loss of wear parts.
 Compared with river pebbles hammer crusher, impact crusher has higher crushing ratio. And impact crusher can make better use of high-speed impact energy of the entire rotor. However, due to the crusher board hammer can easily be wore, it is limited to the application of hard materials. Impact crusher is usually used for coarse crushing, medium breaking or fine crushing of  materials that is brittle below medium hardness such as limestone, coal, calcium carbide, quartz, dolomite, and sulfide iron ore, gypsum and chemical raw materials.
 Zhengzhou Hongxing machine river pebble crusher work principle: make use of impact energy to break the river gravel. When in operation, the rotor driven by the motor is in high-speed rotation. River gravel goes into the board hammer area, impact crusher board hammer on the rotor, and then was thrown to the counter-attack on the device broken again. Then from the counterattack liner bounced back to the board hammer area, the materials are being re-broken. This process is repeated, river pebbles descending into one, two, three cavity repeated counterattacks broken, until the river gravel crushing to the required size going out from the discharge port. Adjust the gap between the frame and the rotor can reach the purpose of changing the size and shape of the material of river pebbles.
 

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