In the economic restructuring, the crushing machinery in the comprehensive utilization of mineral resources in the technology occupies a pivotal position, with reasonable crusher machinery set up a reasonable production lines, the full use of all phases of the broken material, to achieve zero pollution emissions, will be the future trend of development.
Since the reformand opening up, the rapid development of the domestic economy and promote the rapid development of socialist construction, in which the process ofurbanization, the consumption of building products is huge, and one of them iscement. In the economic restructuring, the crushing machinery in thecomprehensive utilization of mineral resources in the technology occupies apivotal position, with reasonable crusher machinery set up a reasonableproduction lines, the full use of all phases of the broken material, to achievezero pollution emissions, will be the future trend of development.
First, crushingand its significance
Relying onexternal forces to overcome the solid material between the internal cohesion ofthe material, so that solid material damage, split. From large to small pieces,with coarse particles become fine powder process, known as crushing. The industrywill be used to small pieces of the process of small pieces known as broken;the coarse particles become fine powder process known as grinding; crushing andgrinding together referred to as crushing.
After the solidmaterial is crushed, the internal crystal structure changes, the surface energyincreases, the change area (specific surface area) per unit mass alsoincreases, the speed of physicochemical reaction can be increased, the mixingis easy, and the homogenization effect is improved for drying, storage boxtransport to create favorable conditions.
For example cementproduction, the main raw material limestone is from the mining ore, small oneis 300 ~ 500mm, large one is 1000 ~ 2000mm. Thus firstly they must be broken bycrushing machinery. After grinding through mechanical grinding can be achieved.Each production of 1t cement, about 3 ~ 4t need to crush all kinds ofmaterials, crushing process of electricity consumption occupy 60% to 70% of thewhole plant power consumption.
Second, common crusherin the cement plant and its main crushing methods are as follows.
1. By squeeze theprinciple to operate is jaw crusher, rotary crusher and cone crusher. By impactthe principle is a hammer crusher and impact crusher. Both the principle ofshear and extrusion for small roll crusher and tooth cutting broken.
2. Hammer andimpact crusher. Hammer and impact crusher is the most common models usage ofthe cement industry. Both rely on the impact of crushing materials, have acoarse, crushing the models. The main difference between the two is the hammer,the former is hinged on the rotor hammer, which is embedded in the rotor bodyof the plate hammer.
Therefore, it isvery important to choose reasonable crushing machinery, simplify the crushingprocess of the whole plant, improve the traditional smashing operation and theoperation level of the crushing post, so as to achieve high yield, highquality, low consumption and safety of cement production. Compared with thetraditional crushing equipment, the PE / PEX jaw crusher, the PF impact crusherand the PCH ring hammer crusher produced by Henan Zhengzhou Mining MachineryCo., Ltd. have the advantages of high hardness, high hardness, broken powerconsumption, and so on, and sincerely welcome you to come to visit.