Wet Ball Mill for Ore Grinding in Mineral Processing
A wet ball mill is a key grinding equipment used in mineral processing plants to grind crushed ore into fine particles. Unlike dry ball mills, it operates with water or liquid medium, forming a slurry that flows through the mill for continuous processing. Moreover, wet grinding offers higher grinding efficiency, reduced dust generation, and better product quality. Therefore, it is the default choice for most mineral processing operations, including gold, copper, lead-zinc, and iron ore.
How Does a Wet Ball Mill Work?
The wet ball mill operates on a simple but effective principle. First of all, crushed ore and water are fed into the mill cylinder through the hollow shaft. Subsequently, the rotating cylinder lifts the steel balls to a certain height and then drops them, creating impact and attrition forces that grind the ore into fine particles. Then, the ground slurry is discharged through the discharge end. Meanwhile, the slurry flows continuously through the mill, ensuring stable production and uniform particle size. As a result, the wet ball mill achieves efficient grinding with minimal dust and low noise.
Overflow Type vs Grate Type: Which One to Choose?
The wet ball mill is available in two discharge configurations. The choice depends on your required grinding fineness and downstream process:
| Type | Discharge Method | Advantages | Applications |
|---|---|---|---|
| Overflow Type | Slurry overflows through the hollow shaft | Simple structure, high capacity, suitable for fine grinding | Fine grinding, regrinding operations |
| Grate Type | Slurry discharges through grate plates | Better control of particle residence time, reduces over-grinding | Coarse grinding, primary grinding stages |
Therefore, for fine grinding and regrinding circuits, the overflow type is the better choice. For primary grinding where you need to control particle size, the grate type offers advantages. Our engineers can help you select the optimal configuration based on your ore characteristics.
Main Features of Our Wet Ball Mill
Our wet ball mill is designed for demanding mineral processing conditions.
First of all, it delivers high grinding efficiency with low power consumption per ton of ore.
Furthermore, the robust cylinder and wear-resistant liners ensure long service life and minimal maintenance.
In addition, it supports continuous operation with stable performance, making it ideal for large-scale production.
Moreover, the discharge design allows for easy adjustment of grinding fineness by changing screen mesh sizes.
Consequently, it handles various ore types, from soft to hard rock, with excellent adaptability.
Technical Specifications
| MODEL | Drum size (mm) | Rotary speed (r/min） | Ball loading（t） | Feed size（mm） | Capacity（t/h） | Power | Dimension（mm）(L×W×H) | Weight（T） |
| (kw) | ||||||||
| GM0715 | Φ750×1500 | 44.09 | 0.9 | 0-25 | 0.2-0.6 | 7.5 | 3250x1200x882 | 2.3 |
| GM0912 | Φ900×1200 | 41.6 | 1.1 | 0-25 | 0.3-0.9 | 11 | 3843x1850x1400 | 4.21 |
| GM0918 | Φ900×1800 | 41.6 | 1.6 | 0-25 | 0.4-1.1 | 15 | 4443x1850x1400 | 5.65 |
| GM0921 | Φ900×2100 | 41.6 | 1.8 | 0-25 | 0.6-1.5 | 22 | 4743x1850x1400 | 6.66 |
| GM1224 | Φ1200×2400 | 35.2 | 4 | 0-25 | 1.6-4.1 | 30 | 5540x2300x1850 | 10.02 |
| GM1530 | Φ1500×3000 | 30.7 | 8.1 | 0-25 | 3.5-8.0 | 80 | 7430x2930x2060 | 16.843 |
| GM1536 | Φ1500×3600 | 30.7 | 9.8 | 0-25 | 4.5-10.0 | 95 | 8030x2930x2060 | 18.649 |
| GM1545 | Φ1500×4500 | 30.9 | 12.5 | 0-25 | 5.5-13.5 | 110 | 8930x2930x2060 | 20 |
| GM1830 | Φ1830×3000 | 27 | 13 | 0-25 | 3.0-17.0 | 130 | 9525x3960x2250 | 29.49 |
| GM1836 | Φ1830×3600 | 27 | 15 | 0-25 | 4.0-21.5 | 155 | 10125x3960x2250 | 31.6 |
| GM1845 | Φ1830×4500 | 27.2 | 18.6 | 0-25 | 6.0-28.0 | 180 | 10925x3960x2250 | 34.21 |
| GM2130 | Φ2100×3000 | 23.9 | 16.5 | 0-25 | 4.0-30.0 | 180 | 8475x4060x3400 | 41.965 |
| GM2136 | Φ2100×3600 | 23.9 | 19.8 | 0-25 | 5.0-37.0 | 180 | 9225x4060x3400 | 44.551 |
| GM2145 | Φ2100×4500 | 23.9 | 24.8 | 0-25 | 5.6-42.0 | 245 | 9975x4060x3400 | 49.23 |
| GM2245 | Φ2200×4500 | 23.9 | 27.32 | 0-25 | 5.8-52 | 280 | 10136x5100x3890 | 64.8 |
| GM2745 | Φ2700×4500 | 21.7 | 41 | 0-25 | 20-155 | 475 | 11991x5610x4500 | 92 |
Why Choose Hengcheng for Your Grinding Project?
With over 25 years of experience in mineral processing equipment manufacturing, we specialize in designing customized grinding circuits for global customers. Furthermore, we provide a full package of services — from engineering consultation and ore testing to on-site installation, commissioning, and personal training. Therefore, you can rely on us from the very beginning of your project to the final operation.
Frequently Asked Questions
Q: What is the difference between a wet ball mill and a dry ball mill?
A: A wet ball mill grinds materials with water or liquid medium, forming a slurry. A dry ball mill operates without liquid. Wet grinding offers higher efficiency, less dust, and better product quality, making it the standard choice for mineral processing.
Q: What is the processing capacity of your wet ball mill?
A: We offer customized solutions based on your specific requirements. The capacity typically ranges from 1 TPH to 170 TPH, depending on the model and ore characteristics.
Q: How do I choose between overflow type and grate type?
A: Overflow type is suitable for fine grinding and regrinding. Grate type is better for primary grinding and controlling particle size. Our engineers can recommend the optimal type based on your ore and process requirements.
Q: What is the output particle size of the wet ball mill?
A: The output size typically ranges from 0.074mm to 0.89mm (200 to 20 mesh), adjustable by changing screen mesh or adjusting mill speed.
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