High-pressure Roller Crusher
High-pressure grinding rolls (commonly known as "double-roll crusher") is a fine/ultra-fine crushing equipment featuring laminated crushing, high efficiency, energy saving, and low over-powder rate, with highlights of high sand yield, low energy consumption, and easy maintenance.
Core technical features
■ Lamination crushing principle
■ Two rollers rotate in opposite directions, compressing material into a dense cake under high pressure, then crushing it for discharge; low over-crushing rate, optimal particle gradation, and minimal flaky particles.
■ Hydraulic protection and roll gap adjustment
■ High-precision hydraulic system + nitrogen accumulator, roll gap adjustable 0.5–30mm, automatic retreat on iron impact to protect equipment;
■ High-wear-resistant roller surface
■ Two options: integral cast manganese steel (general) or alloy steel with embedded carbide studs (for high-hardness materials); roll surface life ≥20,000 hours, with modular quick replacement (completed within 48 hours).
■ Energy efficient
■ Low-speed high-torque drive saves 15%–35% more energy than traditional crushing, boosts system capacity by 20%–30%, and cuts overall energy use by over 20%.
■ Eco-friendly and low noise
■ Fully sealed roller cover + dust extraction port, dust emission ≤10mg/m³; low-speed operation, low noise, suitable for ■ green production lines.
■ Smart and Modular
■ Optional VFD, auto lubrication, pressure/temperature monitoring; modular design for quick roll changes, 40%+ lower maintenance costs.
Mainstream model technical specifications
■ Model designation: G + roll diameter (cm) × roll width (cm);
■ Adaptable materials: compressive strength ≤250MPa, humidity<10%
■ Medium-hard materials (river pebbles, limestone, granite, coal, etc.).
Model | Roll diameter × Roll width (mm) | Feed particle size (mm) | Processing capacity (t/h) | Motor Power (kW) | Discharge Particle Size (mm) |
G100×80 | 1000×800 | ≤35 | 145-200 | 2×(132–200) | 0.5–20 |
G120×80 | 1200×800 | ≤40 | 220-310 | 2×(220–280) | 1–25 |
G140×100 | 1400×1000 | ≤50 | 310-450 | 2×(280–400) | 1-30 |
Note: Discharge particle size within 5mm, internal yield 50%–70%, fineness modulus adjustable from 2.3–3.0.
Typical application scenarios
■ Sand making: River pebble / limestone sand making, sand yield increased by 30%+, particles rounded, meeting national standards.
■ Ore Dressing: Ultra-fine crushing of iron/gold ore, feed size ≤3mm, improved grinding efficiency.
■ Coal: Raw coal / coal gangue crushing, minimal over-pulverization, high recovery rate Chengdu Dahongli Machinery Co., Ltd.
■ Construction waste: tailings, fly ash, and C&D debris recycling, tailored for low-carbon circular production lines.
Key differences from traditional roll crushers
■ Traditional double-roll crusher: spring-loaded pressure, manual gap adjustment, short roll surface life, high energy consumption, high over-powder rate.
■ Our high-pressure roller press: hydraulic high pressure, intelligent gap adjustment, assembled wear-resistant roller surface, 30% energy saving, low over-grinding rate, suitable for large-scale, intelligent production lines.