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Help CenterPrimary and Secondary Ball Mill Combination for Concentrator
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
This professional primary and secondary ball mill combination for concentrator is a matched two-stage collaborative grinding system customized for standardized large-scale mineral beneficiation plants, focusing on solving single-stage grinding capacity limitations, unbalanced particle size distribution and insufficient monomer dissociation that restrict concentrator throughput and separation efficiency. Industrial concentrators generally bear continuous high-volume ore processing tasks and require strict grinding fineness stability and high mineral liberation degree to support stable flotation, magnetic separation and gravity separation operations. Conventional single-ball-mill grinding configurations cannot balance high throughput and fine grinding quality, often resulting in incomplete dissociation of coarse ore particles, excessive fine mud accumulation and severe circulating load fluctuation under long-term full-load operation. These defects lead to fluctuating concentrate grade, low comprehensive recovery rate and restricted overall concentrator production capacity. This primary and secondary ball mill combination takes graded collaborative grinding, high matching compatibility and stable full-process beneficiation adaptation as core advantages, specially designed for supporting high-efficiency grinding pretreatment of large and medium-sized mineral concentrators. The complete combination system adopts scientific primary and secondary graded matching structure, including dedicated primary coarse grinding ball mill, secondary fine grinding ball mill, intermediate classified screening unit and linkage circulating control module. The primary mill undertakes high-throughput bulk ore crushing and preliminary dissociation to reduce ore granularity difference and relieve fine grinding load, while the secondary mill performs precise deep refinement and full monomer liberation on semi-finished materials, perfectly balancing production capacity and grinding precision. It can be perfectly docked with upstream large-scale crushing and screening systems and downstream full-set concentrator separation, purification and dewatering processes. Adopting concentrator-adaptive staged parameter calibration and differentiated medium grading scheme, the combination eliminates the inherent defects of single-mill grinding, realizes high-stability and high-efficiency full-ore dissociation, and provides reliable standardized, low-fluctuation and high-yield grinding pretreatment guarantee for long-cycle continuous operation of industrial mineral concentrators.
2. Working Principle
The primary and secondary ball mill combination for concentrator adopts two-stage graded collaborative grinding and progressive deep mineral dissociation principle, realizing high-throughput stable grinding and standardized particle size homogenization to meet the full-load operation demands of large concentrators. Pre-crushed qualified bulk ore materials are stably and quantitatively delivered into the primary ball mill through a high-flow constant feeding system for large-capacity preliminary coarse grinding. The primary mill is equipped with matched large-size grinding media and optimized operating parameters to efficiently crush bulk ore particles, complete initial mineral dissociation and uniform material homogenization, ensuring stable high-throughput output while avoiding excessive fine mud generation. The semi-ground ore slurry is continuously transported to the intermediate classification unit for accurate particle size screening and grading. Qualified preliminarily refined materials are sent to the secondary grinding system for deep processing, while residual coarse particles with undissociated mineral intergrowths are automatically circulated back for supplementary primary grinding. The secondary fine grinding ball mill adopts tailored fine medium grading and low-fluctuation stable operation logic to conduct precise ultra-fine refinement on semi-finished ores, fully breaking tight mineral-gangue symbiotic structures and realizing complete monomer liberation of target valuable minerals. Through synchronous linkage adjustment of primary and secondary mill rotating speed, feeding volume and classification precision, the entire combination system maintains balanced staged load distribution and coordinated grinding intensity. The final qualified uniform fine slurry is stably discharged at rated capacity, forming high-quality beneficiation feed that fully meets concentrator process standards. Finally, high-uniformity, full-liberation and process-friendly mineral slurry is steadily output, achieving coordinated, high-efficiency and stable grinding pretreatment for large-scale concentrator production lines.
3. Core Features
Coordinated Primary and Secondary Graded Grinding: Centrally optimized for concentrator high-yield and high-precision production demands, the dual-mill combination adopts differentiated staged grinding modes. The primary mill guarantees ultra-stable processing throughput, while the secondary mill ensures fine grinding quality and thorough dissociation, perfectly balancing capacity and precision.
Full Mineral Monomer Liberation & Stable Feed Quality: The collaborative two-stage grinding scheme effectively solves the problems of under-grinding locked minerals and over-grinding fine mud waste in single-mill systems. It realizes progressive deep dissociation of various complex ores, maximizes valuable mineral monomer exposure, and provides consistent high-quality feed for concentrator separation processes.
High Throughput Capacity & Strong Operational Stability: The matched primary and secondary mill configuration breaks the single-unit capacity bottleneck of traditional grinding systems. It supports long-term full-load continuous operation of the concentrator with balanced circulating load, effectively avoiding production fluctuation and equipment overload failure.
Wide Adaptability for Diversified Concentrator Ores: Equipped with flexibly adjustable staged parameters and medium grading ratios, the ball mill combination adapts to copper, iron, gold, zinc and various polymetallic ores. It supports customized grinding fineness to meet different concentrator process standards, with strong compatibility for various mineral beneficiation projects.
Low Comprehensive Consumption & Excellent Economic Benefit: The graded collaborative operation improves overall energy utilization rate and grinding efficiency, reducing invalid energy consumption and vulnerable parts wear. Stable beneficiation indicators significantly enhance concentrate grade and recovery rate, comprehensively lowering long-term operation costs and improving the overall economic benefits of concentrator plants.
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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