PFC series compound energy saving fine crusher is the latest generation high efficiency fine crusher. It is developed by our company by absorbing the domestic and overseas advanced technology and integrating the real working condition of the cement industry. It integrates the advantages of hammer type, reaction type, impact type fine crusher, and designed with special chamber, especially that its hammer head is made of “2021” special wear-resistance material. That brings this machine the advantages of fine discharging product and long service life of wear parts. It has achieved obvious economic benefit after the promotion.

In China, people from cement industries are searching for a good solution to solve the problem existing in stone fine crushing process. The majorities use PEX fine jaw crusher of 20-30mm discharging size. However once such big size material feeding into the cement mill, it will cause low efficient and high power consumption to the cement grinding system. If the average feeding size declines to P80≤5mm, the output capacity of grinding mill will be improved greatly, with the reasonable adjustment of the grinding mill technical parameter. In recent years, although most fine crushers in China have reach this standard, those crushers service life is short, and their benefits are getting worse. Fortunately, the PFC series compound energy saving fine crusher developed by our companies solves the problem of fine crushing and service life, and it has been the preferred equipment for the cement plant to increase the production capacity, lower down the energy consumption and improve their benefits.

Working Principle

As shown on the following drawing, the big material will be crushed immediately, and then fly to the impact plate to go through the second collision crushing. The rebounded material will hit with the follow-up flying material and crush each other. After being crushed in the first chamber, crushed material will go through repeated crushing in the second chamber. Finally, the material will be screened by the discharging grate, qualified product will be discharged from the grate seam, and coarser materials will be returned to the first chamber for repeated crushing.

The feeding size of this machine is 20-50mm; its max rated feeding size shall not be surpassed.

It is better to place it on the road side to avoid affecting manufacturing in the process of maintaining. The feeding material’s temperature shall be under 150 ℃, for the high temperature will short the service life of wear parts and bearings.

Structure Feature:

1: Adopt three-chamber curved surface crushing chamber, to increase the material’s hitting times and reducing compressing, rubbing and the consumption of hammer head.

    2: Interval between impact plate and the hammer head is adjustable, so the discharging size can be effectively controlled.

    3:Adopt deflectable structure to avoid the hammer head cracking if the material is too hard.

    4: PFC50-300 opening equipment is equipped with hydraulic device, which makes the maintenance easier.

    5:Installation iron discharging door at the grate’s outlet. If the iron block or the material is too hard to be crushed, they can be discharged from this door. That can protect the machine parts from breaking, but can not substitute the iron separator.

    6；Intervals between left liner and lower impact plate is adjustable, just as that between the grate and the hammer head. When the particle size surpasses the rated valve, the intervals can be adjusted inward in different ways.

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