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Help CenterEnergy‑Saving Grate Discharge Ball Mill for Hard Rock Ore Beneficiation
Product Spotlights
2.Low maintenance cost
3.Low over-grinding rate
4.Full line intelligent monitoring
5.High material utilization
6.Customized grinding fineness
7.Industrial large-scale production support
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1. Product Description
The Energy-Saving Grate Discharge Ball Mill is a professional industrial grinding equipment independently optimized for high-hardness hard rock ore beneficiation projects. It adopts a unique grate plate discharging structure, which effectively solves the common problems of low throughput, material accumulation and over-grinding existing in traditional overflow ball mills during hard rock processing. Equipped with an upgraded energy-saving drive system and high-strength wear-resistant liners, this ball mill is perfectly suitable for high-hardness minerals such as granite, quartz ore, iron ore, copper ore and gold ore. It is mainly applied in primary coarse grinding and high-load continuous grinding procedures of medium and large-scale mineral processing plants. Featuring low energy consumption, large processing capacity and stable discharging performance, it is recognized as the core grinding equipment for standardized and high-efficiency hard rock beneficiation production lines.
2. Working Principle
This energy-saving grate discharge ball mill operates on a scientific forced discharging grinding principle tailored for hard rock working conditions. The energy-efficient motor and low-loss transmission system drive the mill cylinder to run stably under long-term heavy-load operation. Internally graded high-strength steel grinding media generate powerful impact crushing, extrusion refinement and friction grinding force to crush and refine bulk hard rock ores. Qualified fine particles pass through the gaps of the internal grate plates and are discharged out of the cylinder in the form of pulp, while unqualified coarse particles are intercepted by the grate structure and retained inside for cyclic re-grinding. The special grate design avoids material over-grinding and eliminates pulp blockage. The whole grinding process realizes continuous, uniform, low-consumption and high-stability hard rock ore grinding, meeting the strict process requirements of hard rock beneficiation.
3. Core Features
1. Unique grate forced discharge structure, effectively preventing material accumulation and over-grinding for hard rock ores.
2. Advanced energy-saving transmission system, greatly reducing unit energy consumption and long-term operation cost.
3. Reinforced wear-resistant structure, strong compression and impact resistance, adapting to harsh hard rock grinding conditions.
4. High passing throughput, significantly improving the overall production capacity of hard rock beneficiation lines.
5. Controllable grinding particle size, uniform finished pulp fineness and stable subsequent beneficiation indicators.
6. Optimized internal lining and media ratio, reducing wear loss and extending equipment service life.
7. Wide ore adaptability, suitable for grinding of various high-hardness metal and non-metallic hard rock ores.
4.Technical Specification
| Model | Cylinder RPM (r/min) | Ball Load (t) | Feeding Size (mm) | Discharging Size (mm) | Capacity (t/h) | Motor Model | Power (kW) | Weight (t) |
| MQG600*1800 | 45.5 | 0.5 | ≤ 10 | 0.074-0.5 | 0.2-0.5 | Y160M-6 | 7.5 | 2.5 |
| MQG900*1800 | 38 | 1.8 | ≤ 20 | 0.074-0.6 | 0.8-2 | Y180L-6 | 15 | 5.8 |
| MQG900*3000 | 37.4 | 2.7 | ≤ 20 | 0.074-0.3 | 0.8-3 | Y200L2-6 | 22 | 7.5 |
| MQG1200*2400 | 32 | 4.8 | ≤ 25 | 0.074-0.6 | 1.5-4 | Y225M-6 | 30 | 9.8 |
| MQG1200*4500 | 30 | 5.2 | ≤ 25 | 0.074-0.6 | 1.5-6 | Y280S-6 | 45 | 13.2 |
| MQG1300*4000 | 36 | 5.8 | ≤ 25 | 0.074-0.6 | 2-6 | Y280S-8 | 45 | 14.8 |
| MQG1500*3500 | 28.8 | 8.3 | ≤ 25 | 0.074-0.6 | 3-6 | YR280M-8 | 90 | 17.6 |
| MQG1500*4500 | 28.8 | 10 | ≤ 25 | 0.074-0.4 | 4-8 | JR125-8 | 95 | 22.3 |
| MQG1500*5700 | 28.8 | 12 | ≤ 25 | 0.074-0.4 | 5-10 | JR126-8 | 110 | 26.7 |
| MQG1500*6400 | 28.8 | 13 | ≤ 25 | 0.074-0.4 | 8-12 | JR127-8 | 130 | 29.2 |
| MQG1830*3600 | 24.5 | 12 | ≤ 25 | 0.074-0.4 | 5-10 | JR127-8 | 130 | 31.4 |
| MQG1830*5400 | 24.5 | 15 | ≤ 25 | 0.074-0.4 | 5-20 | JR137-8 | 210 | 33.6 |
| MQG1830*6400 | 24.5 | 19 | ≤ 25 | 0.074-0.4 | 6-25 | JR137-8 | 210 | 36.5 |
| MQG1830*7000 | 24.5 | 20 | ≤ 25 | 0.074-0.4 | 8-30 | JR138-8 | 245 | 39.6 |
| MQG2100*3600 | 24.1 | 21 | ≤ 25 | 0.074-0.6 | 8-20 | YR355L1-8 | 210 | 43.2 |
| MQG2100*4500 | 24.57 | 26 | ≤ 25 | 0.074-0.6 | 8-35 | JR138-8 | 280 | 53.6 |
| MQG2200*3600 | 21.8 | 22 | ≤ 25 | 0.074-0.6 | 9-25 | JR138-8 | 245 | 47.8 |
| MQG2200*4500 | 21.4 | 27 | ≤ 25 | 0.074-0.6 | 10-30 | JR138-8 | 280 | 54.7 |
| MQG2200*7500 | 21.8 | 35 | ≤ 25 | 0.074-0.6 | 10-40 | JR158-8 | 380 | 68.4 |
| MQG2200*9000 | 21.4 | 36 | ≤ 25 | 0.074-0.6 | 10-45 | JR1510-8 | 475 | 76.5 |
| MQG2400*3600 | 21.26 | 26 | ≤ 25 | 0.074-0.6 | 10-40 | JR138-8 | 280 | 63.8 |
| MQG2400*7000 | 21.8 | 36 | ≤ 25 | 0.074-0.6 | 10-45 | JR1510-8 | 475 | 82.4 |
| MQG2400*8000 | 21.8 | 42 | ≤ 25 | 0.074-0.6 | 13-50 | JR630-8 | 560 | 85.7 |
| MQG2400*10000 | 21 | 65 | ≤ 25 | 0.074-0.6 | 15-60 | YR560-8 | 710 | 88.6 |
| MQG2600*8000 | 19.6 | 52 | ≤ 25 | 0.074-0.6 | 16-70 | JR1512-8 | 630 | 97.8 |
| MQG2700*3600 | 21.4 | 39 | ≤ 25 | 0.074-0.4 | 13-75 | JR158-8 | 380 | 86.8 |
| MQG2700*4500 | 21.4 | 43 | ≤ 25 | 0.074-0.4 | 13-90 | JR1510-8 | 475 | 91.8 |
| MQG3000*5400 | 19 | 58 | ≤ 25 | 0.074-0.6 | - | TDMK-30 | 630 | 119.7 |
| MQG3000*9000 | 18.3 | 78 | ≤ 25 | 0.074-0.4 | 20-90 | YR1000-8/1180 | 1000 | 152.4 |
| MQG3000*11000 | 18 | 100 | ≤ 25 | 0.074-0.6 | 30-90 | YR6306-8 | 1120 | 166.7 |
| MQG3200*3600 | 18.6 | 56.5 | ≤ 25 | 0.074-0.6 | 20-80 | YR6302-8 | 630 | 127.4 |
| MQG3200*4500 | 18.6 | 65 | ≤ 25 | 0.074-0.6 | 20-90 | YR6302-8 | 800 | 138.6 |
| MQG3200*5400 | 18 | 72 | ≤ 25 | 0.074-0.6 | 30-100 | YR1000-8 | 1000 | 146.7 |
| MQG3200*9000 | 18 | 85 | ≤ 25 | 0.074-0.6 | 30-100 | YR6302-8 | 1250 | 168.6 |
| MQG3600*4500 | 18 | 86 | ≤ 25 | 0.074-0.6 | 30-100 | YR6302-8 | 1250 | 158.7 |
| MQG3600*6000 | 18 | 117 | ≤ 25 | 0.074-0.6 | 45-180 | - | 14000 | 195.6 |
| MQG4000*6000 | 16.9 | 145 | ≤ 25 | 0.074-0.6 | 60-230 | - | 1800 | 221.7 |
| MQG4500*6000 | 15.6 | 180 | ≤ 25 | 0.074-0.6 | 80-300 | - | 2300 | 269.6 |
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