Description
Laboratory Stirred Ball Mill
Product Introduction
Stirred mills are mainly composed of a stationary grinding cylinder filled with small-diameter grinding media, a stirring device, and other auxiliary devices (such as circulation units, cooling units, timing and speed control systems, etc.). They feature high grinding efficiency and fine grinding particle size, which can well meet various process parameter requirements and simulate various indicators in actual production. Meanwhile, with the advantages of small-batch processing, low power consumption and cost-effectiveness, they are ideal equipment for universities, research institutes and enterprises to conduct research on grinding processes, new materials and coatings.
They are widely applied in the production of various fine powder materials in fields including zirconium silicate, zirconia, alumina, ceramics, chemical industry, electronic materials, magnetic materials, papermaking, coatings, non-metallic minerals, new materials, paints, graphite, calcium carbonate, pharmaceuticals and more.
Product Features
- High energy utilization rate and high power density, enabling outstanding energy-saving performance.
- Easy adjustment of product particle size; the fineness can be controlled by adjusting the residence time of materials in the cylinder.
- Low vibration and low noise during operation.
- Elegant and high-end appearance, reliable performance, simple maintenance, easy and labor-saving operation, and long service life.
- The stirring rod supports automatic lifting, and the grinding cylinder can be tilted freely.
- Capable of satisfying diverse process requirements, supporting continuous or batch production as needed.
- The grinding cylinder is designed with a jacket, allowing precise control of the grinding temperature.
- Customizable with various special functions, such as timing, speed regulation, circulation and temperature adjustment.
- Optional grinding cylinders and stirring components made of different materials (stainless steel, corundum ceramic, polyurethane, zirconia, etc.).
Technical Parameters
| Name | Speed (rpm) | Volume (L) | Loading Capacity (L) | Motor Power (kW) | Wear-Resistant Materials | Feed Particle Size (mm) | Discharge Particle Size (μm) | Speed Regulation Mode | Remarks |
| JM-1L | 50~1400 | 1 | 0.35 | 0.37 | Stainless steel, nylon, corundum, polyurethane, zirconia, agate, PTFE, etc. | ≤5 | ≤1 | Frequency conversion speed regulation | Laboratory Stirred Mill |
| JM-2L | 50~1400 | 2 | 0.7 | 0.37 | — | — | — | — | — |
| JM-3L | 50~1400 | 3 | 1.05 | 0.37 | — | — | — | — | — |
| JM-5L | 60~560 | 5 | 1.75 | 0.75 | — | ≤10 | — | Frequency conversion / fixed speed | Small Stirred Mill |
| JM-10L | 60~560 | 10 | 3.5 | 1.5 | — | — | — | — | — |
| JM-15L | 60~380 | 15 | 5.25 | 2.2 | — | — | — | — | — |
| JM-20L | 60~380 | 20 | 7.0 | 2.2 | — | — | — | — | Light-duty Stirred Mill |
| JM-30L | 60~310 | 30 | 10.5 | 3 | Carbon steel, stainless steel, lined with nylon, polyurethane, PTFE, corundum, etc. | — | — | — | — |
| JM-50L | 60~140 | 50 | 17.5 | 4 | — | ≤15 | — | — | Production Stirred Mill |
| JM-100L | 60~140 | 100 | 35 | 7.5 | — | — | — | — | — |
| JM-200L | 60~110 | 200 | 70 | 11 | — | — | — | — | — |
| JM-300L | 60~110 | 300 | 100 | 15 | — | — | — | — | — |
| JM-500L | 60~90 | 500 | 170 | 18.5 | — | — | — | — | — |
| JM-600L | 60~90 | 600 | 200 | 22 | — | — | — | — | — |
Working Principle
The main shaft drives the stirrer to rotate at a high speed, making the grinding media move irregularly. This chaotic motion generates collision, extrusion, friction and shearing forces between the grinding media, thus pulverizing and fine-grinding the materials.
In addition, different sizes, shapes and ratios of grinding media will lead to different grinding effects. Generally speaking, larger grinding media result in coarser particle size of the ground materials, while smaller media produce finer powder. A proper ratio of grinding media with different specifications, combined with appropriate speed adjustment, will achieve better grinding performance.
The mill must be operated with appropriate grinding media and material loading within specified capacity to prevent mechanical overload. The cooling jacket requires a continuous supply of coolant to maintain safe operating temperatures during prolonged grinding.
- Material Compatibility: Verify compatibility of the sample with wetted parts (stainless steel, corundum, zirconia, etc.) to avoid corrosion or contamination.
- Electrical Safety: Ensure the electrical supply matches motor specifications and includes proper grounding to mitigate shock hazards.
- Thermal Management: Maintain a steady coolant flow through the jacket to prevent overheating of the grinding chamber during extended runs.
- Mechanical Stability: Place the mill on a level, vibration-dampened surface to avoid misalignment of the stirring rod and cylinder.
This procedure outlines the correct sequence for loading, operating, and unloading the stirred mill to ensure safe and effective fine grinding. Always verify all safety interlocks and cooling connections before starting the motor.
Required Equipment: Grinding media (e.g., zirconia beads, 1-3 mm diameter), Cooling water supply and return lines, Frequency converter control panel, Splash guard or lid for cylinder
- Inspect Components
Inspect the grinding cylinder, stirring rod, and sealing gaskets for cleanliness, wear, or damage before each use. - Load Grinding Media
Load grinding media into the cylinder up to approximately 30–50% of the total volume, ensuring even distribution. - Add Material
Add the material to be ground, keeping the combined volume of media and material within the rated loading capacity of 3.5 L. - Set Rotational Speed
Set the desired rotational speed between 60 and 560 rpm using the frequency converter, adjusting for material hardness and target fineness. - Activate Cooling System
Activate the cooling system by connecting coolant lines to the jacket and setting the target temperature to prevent thermal degradation. - Start Milling
Start the stirring motor and allow the mill to run for the required residence time, monitoring speed and temperature continuously. - Unload Product
Stop the motor, lift the stirring rod automatically, and tilt the grinding cylinder to discharge the slurry into a clean container.
What is the achievable particle size reduction from a feed of ≤10 mm for the Atomfair JM-10L stirred mill when grinding hard ceramics like zirconia?
The JM-10L can grind feed material up to ≤10 mm down to a discharge particle size of ≤1 μm, achieving ultra-fine grinding. This performance is enabled by high-speed irregular motion of the grinding media at speeds of 60–560 rpm, generating collision, extrusion, friction, and shearing forces sufficient for hard ceramics such as zirconia. The 1.5 kW motor and 3.5 L loading capacity support the power density required for this degree of comminution.
Can the Atomfair JM-10L stirred mill be integrated with a circulation system for continuous processing, and what are the material compatibility constraints for the grinding cylinder?
Yes, the JM-10L supports continuous or batch production as needed, and its optional grinding cylinders and stirring components are available in materials such as stainless steel, corundum ceramic, polyurethane, zirconia, nylon, agate, and PTFE. This allows compatibility with a wide range of materials, including acids, alkalis, and solvents, but users must select the appropriate wear-resistant material based on chemical reactivity and abrasion resistance for their specific application.
What cooling or temperature control infrastructure is required for the Atomfair JM-10L stirred mill during prolonged processing of heat-sensitive materials?
The JM-10L grinding cylinder is designed with a jacket that enables precise control of the grinding temperature. For labs processing heat-sensitive materials or requiring extended runs, a recirculating chiller or water supply must be connected to the jacket. The unit also supports customizable timing, speed regulation, and temperature adjustment functions to manage thermal conditions effectively during operation.
The Atomfair JM-10L small stirred mill offers a 10 L grinding volume with 3.5 L loading capacity, delivering ultra-fine grinding down to ≤1 μm. It combines high energy efficiency, low noise, and integrated temperature control, but requires feed particles ≤10 mm and careful media selection for optimal performance.
Positive
- High energy utilization and power density: The stirred mill achieves outstanding energy-saving performance through high energy utilization rate and high power density, reducing operational costs.
- Integrated jacket temperature control: The grinding cylinder jacket allows precise control of grinding temperature, critical for thermally sensitive materials or processes.
Trade-offs
- Feed particle size ≤10 mm: The mill requires feed particles no larger than 10 mm, necessitating pre-crushing or milling for larger feedstock prior to processing.
- Performance depends on media selection: Grinding fineness and efficiency are highly dependent on the size, shape, and ratio of grinding media, requiring empirical optimization for each material.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
