HPGR has been used for many years and is emerging as an energy-efficient alternative to conventional and AG/SAG comminution circuits. One of the interesting features of HPGR is its capability to produce a particle size distribution with a greater than typical amount of fines, thus reducing the power requirement for the downstream ball mill. This makes the use of standard ball mill analyses based on the K80 inadequate, unless appropriate corrections are made. (This problem is shared by AG/SAG mill circuits.)
High pressure grinding rolls have the capability to fill the roll of secondary crushers and primary/secondary grinders. Often applied as a replacement for conventional SAG milling circuits, they result in lower energy consumption, lower grinding media consumption and lower operating costs. They also tend to have a smaller footprint with easier installation.
HFKG High Pressure Grinding Rolls (HPGR) offers several benefits to the minerals industry, such as:
• Low energy consumption, 0.8-3.0kWh/t
• Ability to process moist ores, up to 10%
• Enhanced downstream recovery and grind ability
• Improved grade of downstream products
• Low maintenance requirements
• Low space requirements
• Low vibration and noise
• High availability, >95%
• High wear surface life, 8000-36000 hrs
HFKG High Pressure Grinding Rolls (HPGR) offers several benefits to the minerals industry, such as:
• Low energy consumption, 0.8-3.0kWh/t
• Ability to process moist ores, up to 10%
• Enhanced downstream recovery and grind ability
• Improved grade of downstream products
• Low maintenance requirements
• Low space requirements
• Low vibration and noise
• High availability, >95%
• High wear surface life, 8000-36000 hrs