HPGR (High Pressure Grinding Rolls) is an advanced grinding solution widely used in modern mining and mineral processing plants. By applying high compressive forces between two counter-rotating rollers, HPGR delivers superior energy efficiency, improved particle characteristics, and lower operating costs compared with traditional grinding technologies.
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ec@shyychina.comAs demand grows for more sustainable and cost-effective comminution circuits, HPGR has become a preferred choice in hpgr mining, cement production, and hard rock mineral processing applications. HPGR is commonly integrated into grinding circuits as a pre-grinding or finish grinding unit to enhance overall plant performance.
HPGR technology is widely used across a range of industries and materials, including:
In hpgr mining applications, HPGR is particularly effective for hard and abrasive ores where energy efficiency and throughput are critical.
High pressure grinding rolls operate based on the principle of inter-particle compression. The HPGR mill consists of two rollers rotating in opposite directions—one fixed and one floating. Material is fed from above in a full-bed condition and drawn into the gap between the rollers.
Under extremely high pressure, typically 100–150 MPa, the material is compacted into a dense cake and discharged from the bottom. This process generates:
More importantly, the remaining particles develop internal micro-cracks, significantly improving downstream grindability and reducing energy demand in subsequent milling stages. Process designers usually position HPGR before ball mills or integrate it into hybrid grinding circuits.
Traditional ball mills rely primarily on impact and abrasion, which often results in higher energy consumption and excessive fines. In contrast, an HPGR mill applies controlled high pressure to a packed material bed, minimizing energy losses.
Many industry-recognized solutions, such as weir hpgr, have demonstrated how high pressure grinding rolls can reduce specific energy consumption by 25–50% when used as a pre-grinding stage or integrated into modern comminution circuits.
| Models | Capacity(t/h) | Motor (kW) | Linear Velocity（m/s） |
| 100-60 | 105~150 | 2×(315) | 1.36 |
| 120-45 | 100~140 | 2×220 | 1.38 |
| 120-80 | 240~300 | 2×450 | 1.31 |
| 140-80 | 340~400 | 2×560 | 1.47 |
| 140-100 | 400~480 | 2×630 | 1.48 |
| 140-110 | 500~600 | 2×710 | 1.6 |
| 140-140 | 550~630 | 2×800 | 1.48 |
| 180-170 | 900~1000 | 2×1400 | 1.7 |
Our HPGR solutions are engineered to meet diverse process requirements and operating conditions:
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