1. Basic Specifications
models:
MQG: Overflow ball mill (MQ is grid type, MQG is overflow type)
36: cylinder diameter (3600mm)
40: cylinder length (4000mm)
Effective volume: 30-32m³
Maximum ball loading: ≈60-70 tons (ball filling rate 25%-35%)
2. Processing capacity and particle size
processing capacity:
Wet grinding:30-75 tons/hour (adjusted according to material hardness, feed size and finished productfineness)
Dry grinding: slightly lower than wet grinding, and needs to be combined with an air selection system
Feed size: 25mm (20mm is recommended to improve efficiency)
Discharge size: 0.074-0.4mm (adjustable, controlled by grinding medium ratio)
3. Power system
Main motor power: 800-1000kW (usually high-voltage motors, such as 10kV/ 6kV, depending on the configuration)
Reducer model: such as JS140, MBY800 and other hard- toothed reducers
Cylinder speed: 17-19r/min (70%-80% of the critical speed)
4.Structural design
Cylinder material: Q235B or Q345B steel plate, thickness ≥40mm
Liner type: high manganese steel (ZGMn13), rubber or composite liner (wear-resistant life is about 6-12 months)
Bearing type: large double-row spherical roller bearing (or sliding bearing, forced lubrication required)
5.Applicable materials
Metal ore: iron ore, copper ore, gold ore, etc. Ore dressing and grinding
Non-metallic ore: quartz sand, feldspar, fluorite,etc. Ultra-fine powder processing
Industrial field: cement clinker, slag powder, chemical raw materials
6.Equipment size and weight
Machine weight: ≈90-120 tons (including motor, reducer and basic frame)
Overall dimensions (length × width × height): ≈12m × 5.5m × 4.5m (including transmission device)
7. Optional configuration
Automation control: PLC system monitoring current, temperature, vibration, interlocking protection
Environmental protection measures: supporting dust removal equipment (pulse bag dust collector), sound insulation cover (noise ≤85dB)
Lubrication system: automatic centralized lubrication (main bearing, gear meshing parts) Notes
1.MQG3640 may vary in motor power and liner material, and the specific model suffix needs to be confirmed.
2.Key factors for grinding efficiency:
Steel ball/steel segment ratio (usually 40-120mm in diameter) Material hardness (Mohs hardness ≤7.5 is appropriate) Slurry concentration (60%-75% is recommended for wet grinding)
3.Maintenance focus: Regularly check the gear meshing clearance, liner bolt looseness and lubrication system oil pressure. detailed motor model, reducer speed ratio or basic installation diagram depend on specific application scenarios (such as ore dressing plant, cement plant, etc.).
