HPGR High Pressure Roller Press

The high-pressure roller press is a new type of energy-saving grinding equipment for cement production. It can replace traditional ball mill pre-grinding systems, reducing energy consumption, steel consumption, and working noise. It’s suitable for new plant construction and can increase output by 30% to 50% for old plants.


    By using the roller press for extrusion, the material can be divided into 20% to 35% fines of 0.08mm and 65% to 85% particles less than 2mm. The particles' internal structure is cracked, improving grindability and efficiency.

    To enhance HPGR's wear resistance, the roller surface of the roller press is usually treated using a thermal overlay welding method. This design facilitates easier maintenance of the wear-resistant layer, thereby extending the equipment's lifespan. Overall, the hpgr mill is an efficient and energy-saving cement grinding equipment, making it a technology worth adopting for cement manufacturers.

    Working Principle

    The roller press is a mechanical equipment designed based on the principle of material bed grinding. Its main characteristics include high pressure, full speed, full material, and bed material crushing. It consists of two counter-rotating squeezing rollers, one fixed and one movable. The material is fed into the roller press in a full material state from above, and then continuously conveyed between the rollers. Under the high pressure of 100-150 MPa, it forms a compacted cake, which is ultimately discharged from the bottom of the machine. The discharged cake contains a certain proportion of fine-grained finished products, while non-finished particles develop numerous internal cracks, thereby improving the material's grindability and facilitating the reduction of energy consumption in the further crushing process.


    Saving investment
    HPGR crusher is a smaller and lighter option than tube mills with the same production capacity. It saves space and investment in civil construction and is easy to operate and maintain.
    Reduce power consumption
    After using roller press to grind materials, the particle size of materials is significantly reduced, which improves the grinding condition of subsequent mills, and reduce the power consumption. Compared with the traditional grinding method, it can save 25-50% energy, and the annual power saving benefit is quite considerable.
    Good working environment
    The material is continuously and steadily crushed within the compression roller enclosure, making it difficult for harmful dust to disperse. Due to minimal impact occurrence, the roller press generates much lower noise compared to the tube mill, thereby improving the working environment.
    Improve production yield
    Install a roller press in the grinding system to apply high pressure onto the ground material. Most of the energy is utilized for inter-particle compression, converting the sound and heat energy generated by friction into the deformation energy of the material, thereby achieving material deformation, tearing, and comminution.


    ModelsCapacity(t/h)Motor (kW)Linear Velocity(m/s)

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