HGPR Mill

High Pressure Grinding Roll (HPGR) delivers reliable and energy-efficient comminution by applying high pressure between two counter-rotating rolls. This action induces micro-cracks within the ore particles, significantly enhancing downstream processing and mineral recovery. The HPGR Standard is well-suited for hard rock applications in both greenfield and brownfield projects.

Designed with a focus on operational simplicity and durability, the HPGR Standard offers a cost-effective alternative to conventional milling, reducing dependency on grinding media and lowering overall power consumption. Its compact footprint and modular design allow easy integration into existing circuits, while the robust mechanical components ensure high availability and low maintenance requirements.

This proven technology supports flexible configurations, including both static and dynamic skewing, and is available in various sizes to match specific throughput demands.

KEY CHARACTERISTICS

• Applications: Hard rock, primary and secondary grinding, pellet feed preparation

• Energy Efficiency: Reduces power consumption compared to traditional mills

• Feed Size: Typically < 60 mm (can vary based on application)

• Product Size: Down to 4–6 mm or finer with micro-crack generation

• Throughput: From 50 tph to over 3,000 tph, depending on size

• Roll Diameter: From ~1,000 mm to 2,100 mm

• Roll Width: From ~300 mm to 1,800 mm

• Drive Power: From ~2 x 300 kW up to 2 x 2,500 kW

• Maintenance: Simple roller exchange and long wear life with tungsten carbide studs or hardfacing

• Control System: Optional PLC or DCS integration

• Cooling/Lubrication: Grease or oil-lubricated bearings with integrated cooling systems