Advantages of laminating crushing and single particle crushing?

The crusher is an important part of mining equipment and a relatively large proportion of various equipment. Red Star machine experts tell us that crushers can be divided into many types according to the different crushing methods, including laminating crushers and single particle crushers, and laminating crushing is highly recommended by experts. So what are the advantages of laminar crushing compared to single crushing and single particle crushing?

It is understood that laminating crushing has great advantages, which can greatly improve the crusher productivity, improve the quality of crushed products, and reduce the energy consumption of crushing.

1. Improve productivity

The laminating crushing feed is sufficient, the material filling degree is high, and the crushing grinding equipment has high productivity. Comparative studies conducted in the same crushing machine weight based on the principle of single particles made PYB1200 spring cone crusher crushing the laminate based Finnish HP400 cone crusher. The minimum productivity and maximum productivity of the domestic PYB1200 cone crusher based on the single particle crushing principle are 110 ton / hr and 168 ton / hr, respectively, while the Finnish HP400 cone crusher based on the laminating crushing principle has a minimum and maximum productivity of 355 ton / hr, respectively. And 700 tons / hour. It can be seen that the high energy cone crusher based on the principle of laminating crushing can greatly improve the productivity.

2, improve the quality of broken products

The quality of the single-particle crushed product is poor, the product has a large particle size, the calibration discharge size is small, and the needle-like content is high. Laminating crushing is a kind of selective crushing. The bulk material is crushed along the rock stress, crystal defects and other stress concentration points. The quality of the crushed product is high, the particle size of the calibration is high, and the content of the needle-shaped product is low.

The PYB1200 cone crusher calibrates the discharge size to less than 20%, while the HP400 cone crusher calibrates the discharge size to 68%. In addition, the former has a needle-like product content of up to 15%, while the latter has a needle-like content of less than 8%. It can be seen that the fracture of the laminate can greatly improve the quality of the broken product.

3. Reduce crushing energy consumption

The energy consumption situation during the crushing and grinding process is mainly broken work, friction heat, crushing noise, equipment mechanical power consumption and so on. Considering only the power consumption of the single-particle material crushing itself, the energy utilization rate is very high, but the energy utilization rate is very low for various crushing and grinding equipment based on the principle of single-particle crushing. German scholar K. Shaunat studied the single particle crushing and concluded that if the traditional crusher of the single particle crushing principle, a large amount of energy is consumed in the form of heat energy and kinetic energy.

When the American scholar BH Bai Getelong broke the single-particle material, it was found that the fragmentation of the material after the material was broken could reach 45% of the total input energy, indicating that a large amount of input energy was consumed in the form of heat energy and kinetic energy. However, laminate fracture can maximize the spatter kinetic energy of the crushing process.

Studies have shown that the roller crusher based on the principle of laminating crushing has an energy utilization rate of up to 70%. In addition, the PYB1200 cone crusher based on the principle of single particle crushing has a specific energy consumption of 0.65 kW/ton, while the HP400 cone crusher based on the laminating crushing principle has a specific energy consumption of 455,000/ton, which is 44.4 lower than that of the PYB1200 cone crusher. %. Therefore, Red Star machine experts believe that laminating crushing can maximize energy efficiency.

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