What Is Wet Grinding Process ?
Wet grinding is the process of crushing materials with water or another liquid medium. The materials are ground by the impact, extrusion, and shearing processes of the grinding medium after being mixed in a precise ratio with liquids in a sealed grinding chamber. In this procedure, the liquid medium simultaneously performs the three functions of chilling, lubricating, and dispersing. By appropriately regulating the grinding temperature and avoiding material agglomeration, it guarantees the acquisition of consistent fine particle products.
The advantages and limitations of wet grinding
technical advantages
Outstanding grinding efficiency
The liquid environment is especially well-suited for ultrafine grinding requirements because it lowers the surface energy of particles, making the material simpler to break.
Clean working environment
meets current industrial environmental protection regulations by completely removing dust from the air.
Efficient thermal management
The equipment temperature may be steadily maintained by the continuous water-cooling system, which also keeps materials from thermally denaturing.
Uniform product particle size
Particle size control is naturally formed by the liquid classification effect, which concentrates the product's particle size distribution.
Technological limitations
High operating costs
The use of water resources and the ensuing dehydration treatment result in additional costs.
Equipment corrosion risk
Materials that are acidic or alkaline can hasten the wear and tear of equipment.
limited Material adaptability
This method cannot be used to treat materials that react with water.
Winter anti-freezing requirements
Insulation facilities and enhanced infrastructure expenditure are necessary in cold climates.
Cost analysis of wet grinding process
The primary equipment purchase, which makes up between 45% and 60% of the overall investment, is the central component. The feeding device (8%–12%) and the dewatering system (15–20%) are part of the auxiliary system arrangement, which together guarantee the production line's steady functioning. To guarantee that the equipment is in optimal operating condition, installation and commissioning expenses typically make up 10% to 15% of the equipment's cost. Depending on the site's circumstances, infrastructure renovations can make up anywhere from 5% to 20% of the overall cost.
| Component | Description | Cost ratio |
| Main Equipment Procurement | Purchase of the core grinding mill | 45% - 60% |
| Auxiliary Systems Configuration | Includes feeding device (8%-12%) and dewatering system (15%-20%) | 25% - 32% |
| Installation & Commissioning | Costs for setup, calibration, and testing | 10% - 15% (of equipment cost) |
| Infrastructure & Civil Work | Site preparation and modifications; highly site-dependent | 5% - 20% |
Electricity consumption is the main operating cost, with the grinding unit accounting for more than 60% of this total. Energy consumption can be reduced by 18% to 25% by using high-efficiency motors. Between 40 and 60 percent of material costs are related to dielectric loss, which mostly consists of the wear of steel balls and liners. By implementing a closed-loop water circulation system, water usage costs can be reduced by 70%. Ceramic liners and other wear-resistant materials can increase the maintenance cycle by three to five times and drastically reduce downtime.
AGICO wet ball mill selection reference
Wet Grinding Ball Mill
Our wet ball mill is specially designed for efficient and precise grinding operations. It is of high quality, sturdy and durable, and has passed ISO international standards. It can be customized according to the actual factory environment of customers, with a wide range of models and a maximum output of up to 615t/h.
| Specification(mm) | Capacity(t/h) | Output Size(mm) | Rotate Speed(r/min) | Grinding Media Load(t) | Motor Power(kW) | Weight(t) |
| φ900×1800 | 0.65-2 | 0.075-0.89 | 36 | 1.5 | 18.5 | 5.85 |
| φ900×3000 | 1.1-3.5 | 0.075-0.89 | 38 | 2.7 | 22 | 6.98 |
| φ1200×2400 | 1.5-4.8 | 0.075-0.89 | 36 | 3 | 30 | 13.6 |
| φ1200×4500 | 1.6-5.8 | 0.074-0.4 | 32.4 | 5 | 55 | 15.6 |
| φ1500×3000 | 2-5 | 0.074-0.4 | 29.7 | 7.5 | 75 | 19.5 |
| φ1500×5700 | 3.5-6 | 0.074-0.4 | 27 | 12 | 130 | 25.8 |
| φ1830×3000 | 4-10 | 0.074-0.4 | 25.4 | 11 | 130 | 34.5 |
| φ1830×6400 | 6.5-15 | 0.074-0.4 | 24.1 | 21 | 210 | 43 |
| φ2100×3000 | 6.5-36 | 0.074-0.4 | 23.7 | 15 | 155 | 45 |
| φ2100×7000 | 12-48 | 0.074-0.4 | 23.7 | 26 | 280 | 59.5 |
| φ2200×4500 | 9-45 | 0.074-0.4 | 21.5 | 27 | 280 | 54.5 |
| φ2200×6500 | 14-26 | 0.074-0.4 | 21.7 | 35 | 380 | 61 |
| φ2200×7000 | 15-28 | 0.074-0.4 | 21.7 | 35 | 380 | 62.5 |
| φ2200×7500 | 15-30 | 0.074-0.4 | 21.7 | 35 | 380 | 64.8 |
| φ2400×3000 | 7-50 | 0.074-0.4 | 21 | 23 | 245 | 58 |
| φ2700×4000 | 22-80 | 0.074-0.4 | 20.7 | 40 | 380 | 95 |
| φ2700×4500 | 26-90 | 0.074-0.4 | 20.7 | 48 | 480 | 102 |
| φ3600×8500 | 45.8-256 | 0.074-0.4 | 18 | 131 | 1800 | 260 |
| φ4000×6000 | 65-248 | 0.074-0.4 | 16.9 | 146 | 1600 | 242 |
| φ4500×6400 | 84-306 | 0.074-0.4 | 15.6 | 172 | 2000 | 280 |
| φ5030×8300 | 118-500 | 0.074-0.4 | 14.4 | 266 | 3300 | 403 |
| φ5500×8500 | 148-615 | 0.074-0.4 | 13.8 | 338 | 4500 | 525 |
When choosing wet grinding equipment, pilot-scale testing is recommended to ascertain exact process parameters. Consider the equipment supplier's spare parts supply system and technical assistance capabilities at the same time. AGICO's new type of wet ball mill features heavy-duty rolling bearing technology, which saves more than 20% of the energy used by traditional sliding bearings. Furthermore, a ten-year design life for the main bearing provides a strong guarantee of steady, long-term operation.
