Throughout the world's economic development strategy, we can know that the energy industry is the basic industry of the national economy. If we want to develop the economy, create a harmonious society and cast the powerful national strength, we must rely on the support of the energy. The clean coal is the main product for the coal preparation. The by-products include the coal, mixed coal and the coal slime. The waste rock and tailings after the preparation become the wastes. Since there is inter-band coal and some other combustible substance in the waste, they can be used as the raw materials for making brick and burning the cement for comprehensive utilization. In order to improve the labor productivity, the preparatory work is very necessary for the raw coal before the raw coal is sorted to the clean coal, medium coal and the gangue. The preparatory work includes the screening and crushing operation so that the raw coal can meet the basic requirements for the coal preparation in terms of the particle size and the grade. In addition, the wood block, iron and other debris in the coal preparation plant can be processed.
The crusher machine is the common machinery for crushing operations. According to the crushing stage, the crusher machine can be divided into the coarse crusher machine, medium crusher machine and the fine crusher machine. The crushing operation of the crusher machine plays very important role in the coal preparation plant.
First, the crusher machine produced by Henan Hongxing Mining Machinery meets the performance requirements on the coal preparation mechanical equipment. When the coal preparation machine is used to process the raw coal, there are certain particle requirements on the raw coal. If the particle size of the raw coal is more than the maximum particle size, the large pieces of the raw coal should be crushed in advance.
Second, for the inter-band coal, the inter-band coal should be crushed to small particles in order to select the clean coal. Generally, the crushing procedure is set in the coal preparation process, the crushing particle can be up to 13mm to 6mm, which can improve the production of the clean coal.

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