The pressure roller of the roller press is the core component of the machine, using high-pressure compression to crush or shape materials. It is widely used in industries such as mining, chemical processing, and cement production, helping to enhance grinding efficiency while reducing energy consumption. By application, it is categorized into two types: ordinary rollers are primarily used for crushing and pre-grinding materials, whereas precision roller presses are designed for high-accuracy compression and shaping tasks. Additionally, based on their drive mechanism, roller presses can be divided into single-drive models—powered by a single motor, featuring a simpler structure and lower costs—and dual-drive models, which boast more balanced power distribution and are better suited for large-scale equipment.
Specifications
1. Roll diameter: Typically ranges from 800 mm to 1800 mm.
2. Roller width: Typically ranges from 150 mm to 1200 mm.
3. Power output: Ranges from 55 kW to 500 kW.
Design Parameters
1. Roll Diameter and Roll Width
- Roll diameter (D): Typically ranges from 1000 mm to 1800 mm. Function: It influences the material's bite and compaction performance.
Selection criteria: Determine based on the formula D = K × dmax, where K ranges from 10 to 24, according to the maximum feed particle size (dmax).
- Roll width (B): Typically ranges from 400 mm to 1,200 mm. Function: Determines the processing capacity and edge effects.
Selection criteria: Based on the formula B = Kb. Selection criteria: Determined by the formula B = KB × D, where KB ranges from 0.2 to 1.2.
2. Roll Surface Hardness
Hardness range: HRC55–62. Material: High-chromium alloy or 9Cr2Mo material, enhancing wear resistance.
3. Line Pressure
Range: 80–120 MPa. Function: Influences the material's crushing efficiency and energy consumption.
4. Rotational Speed
Range: 1–1.75 m/s. Function: Balances production and roll surface wear.
5. Maximum Feed Particle Size
Scope: Generally no more than 5% of the roll diameter. Function: Ensures effective crushing of the material bed.
Scope of Application
1. Building Materials Industry: Pre-grinding of cement raw materials and clinker.
2. Mining industry: Crushing of metallic and non-metallic ores.
3. Chemical Industry: Pressing of catalysts and fertilizers.
4. Energy Sector: Pelletizing of coal powder and biomass fuels.
Keywords
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Roller press pressure roller
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