Grate ball mill
Grid ball mill (or grate ball mill) is usually used for one stage grinding or ore with relatively coarse grinding force because of the discharging grid at the discharge end.
Grid ball mills are also divided into wet grid ball mills and dry grid ball mills.
Capacity: 0.65-90t/h
Discharge size: 0.075-0.4mm
Feeding size:
≤20mm-≤25mm
Grate ball mill working principle
The working principle of the grid ball mill is mainly to make it slowly rotate through the transmission device, and the material is fed from the feeding end of the cylinder. The material is crushed in the cylinder due to the impact and self-grinding of the steel ball and the ore itself.
Due to the continuous feeding of materials, the pressure causes the materials in the cylinder to move from the feeding end to the discharging end. The material reaching the finished product size is discharged from the discharge end of the cylinder.
During wet grinding, the material is carried out by the water flow; during dry grinding, the material is carried out by the airflow. The ball mill has a discharging grid at the discharge end. The ball mill relies on the grid plate to forcibly discharge the ore. The slurry surface in the cylinder is low, which reduces the over-grinding of the ore and prevents the steel balls from being discharged.
Specifications of grid ball mill
| Model | Feeding size (mm) | Discharging size (mm) | Capacity (t) | Motor power (kW) | Total Weight (t) |
| φ 900×1800 | ≤20 | 0.075-0.89 | 0.65-2 | 18.5 | 5.8 |
| φ 900×3000 | ≤20 | 0.075-0.89 | 1.1-3.5 | 22 | 6.8 |
| φ 1200×2400 | ≤25 | 0.075-0.6 | 1.5-4.8 | 30 | 12 |
| φ 1200×3000 | ≤25 | 0.074-0.4 | 1.6-5 | 37 | 13.2 |
| φ 1200×4500 | ≤25 | 0.074-0.4 | 1.6-5.8 | 55 | 13.7 |
| φ 1500×3000 | ≤25 | 0.074-0.4 | 2-5 | 75 | 16.5 |
| φ 1500×4500 | ≤25 | 0.074-0.4 | 3-6 | 110 | 21 |
| φ 1500×5700 | ≤25 | 0.074-0.4 | 3.5-6 | 130 | 24.7 |
| φ 1830×3000 | ≤25 | 0.074-0.4 | 4-10 | 130 | 34.5 |
| φ 1830×4500 | ≤25 | 0.074-0.4 | 4.5-12 | 155 | 38 |
| φ 1830×6400 | ≤25 | 0.074-0.4 | 6.5-15 | 210 | 46 |
| φ 1830×7000 | ≤25 | 0.074-0.4 | 7.5-17 | 245 | 49 |
| φ 2100×3000 | ≤25 | 0.074-0.4 | 6.5-36 | 155 | 48 |
| φ 2100×4500 | ≤25 | 0.074-0.4 | 8-43 | 245 | 59 |
| φ 2100×7000 | ≤25 | 0.074-0.4 | 8-48 | 280 | 67.5 |
| φ 2200×4500 | ≤25 | 0.074-0.4 | 9-45 | 280 | 58 |
| φ 2200×6500 | ≤25 | 0.074-0.4 | 14-26 | 380 | 63 |
| φ 2200×7000 | ≤25 | 0.074-0.4 | 15-28 | 380 | 65.3 |
| φ 2200×7500 | ≤25 | 0.074-0.4 | 15-30 | 380 | 66.5 |
| φ 2400×3000 | ≤25 | 0.074-0.4 | 7-50 | 245 | 65 |
| φ 2400×4500 | ≤25 | 0.074-0.4 | 8.5-60 | 320 | 70 |
| φ 2700×4000 | ≤25 | 0.074-0.4 | 12-80 | 400 | 92 |
| φ 2700×4500 | ≤25 | 0.074-0.4 | 12-90 | 430 | 102 |
| φ 3200×4500 | ≤25 | 0.074-0.4 | Determined by the technological process | 600 | 137 |
| φ 3600×4500 | ≤25 | 0.074-0.4 | Determined by the technological process | 850 | 158 |
| φ3600×6000 | ≤25 | 0.074-0.4 | Determined by the technological process | 1250 | 175 |
