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.
This document outlines the environmental and operational constraints required to safely store and use the Atomfair JM-5L stirred ball mill. The mill's 0.75kW motor and rotating agitator present mechanical entanglement and electrical shock hazards if mishandled.
- Electrical Safety: Ensure the mill is connected to a grounded outlet with the correct voltage and current rating to prevent electrical shock.
- Mechanical Guarding: Keep all safety guards and covers in place during operation to prevent contact with rotating components.
- Vibration Monitoring: Do not operate the mill if excessive vibration or unusual noise is detected, as this may indicate imbalanced loads or mechanical failure.
- Temperature Control: Activate the cooling jacket when grinding heat-sensitive materials to prevent thermal degradation of the sample or overheating of the mill.
- Material Containment: Seal all openings and connections to prevent leakage of wet or dry powders during grinding.
This procedure describes the correct sequence for initializing and operating the laboratory stirred ball mill. Following these steps reduces the risk of injury and ensures reproducible grinding results.
Required Equipment: Grinding media (e.g., zirconia or stainless steel balls), Coolant supply (if using jacket), VFD control panel
- Install the Grinding Cylinder
Secure the appropriate grinding cylinder onto the mill base and confirm it is locked in place. - Load Grinding Media and Material
Fill the cylinder with the recommended volume of grinding media and add the material to be ground up to the specified loading capacity. - Connect Cooling Jacket
Attach coolant hoses to the jacket inlet and outlet if temperature control is required. - Set the Rotation Speed
Use the VFD controller to set the desired speed within the 60-560 rpm range and verify the display reading. - Start the Mill
Press the start button and monitor the mill for abnormal vibration or noise during the first minute of operation. - Monitor Grinding Process
Allow the mill to run for the required residence time, adjusting speed or cooling as needed based on material behavior. - Stop and Discharge
Press the stop button, wait for the agitator to come to a complete halt, then tilt the cylinder to discharge the ground product.
What is the trade-off between using larger versus smaller grinding media in the Atomfair JM-5L stirred mill for achieving sub-micron particle sizes?
Larger grinding media produce coarser particles, while smaller media yield finer powder, making smaller media essential for achieving the ≤1 μm discharge particle size. The JM-5L's variable speed range of 60–560 rpm allows optimization of media motion to balance grinding efficiency and final fineness.
Can the Atomfair JM-5L stirred mill be integrated with a closed-loop cooling system for temperature-sensitive materials like battery slurries or pharmaceutical compounds?
Yes, the grinding cylinder is designed with a jacket that enables precise temperature control, and the mill supports customization for circulation and temperature adjustment functions. This allows integration with external chillers or recirculating coolers to maintain stable thermal conditions during extended grinding runs.
What are the infrastructure requirements for operating the Atomfair JM-5L stirred mill, including electrical supply and cooling water connections?
The JM-5L requires a 0.75 kW motor with frequency conversion or fixed speed control, necessitating a compatible single-phase or three-phase electrical supply. The jacketed grinding cylinder requires a cooling water or recirculating chiller connection for temperature regulation, and the unit's 5 L volume with 1.75 L loading capacity demands a stable benchtop or floor mounting surface.
The Atomfair JM-5L Small Stirred Mill is a lab-scale grinding system with a 5 L grinding cylinder, 1.75 L effective loading capacity, and a 0.75 kW motor operating at 60–560 rpm. It achieves ultra-fine grinding down to ≤1 μm, features a jacketed cylinder for temperature control, and supports multiple wear-resistant material options, making it suitable for process development and small-batch production of fine powders.
Positive
- High energy efficiency and power density: The stirred mill design delivers high energy utilization and power density, enabling outstanding energy-saving performance during grinding operations.
- Precise grinding temperature control: The grinding cylinder is equipped with a jacket that allows precise control of the grinding temperature, critical for heat-sensitive materials and consistent process conditions.
Trade-offs
- Limited effective loading capacity: With a total volume of 5 L, the effective loading capacity is only 1.75 L (35% of total volume), restricting batch size and throughput for larger-scale trials.
- Feed particle size constraint: The maximum feed particle size for the JM-5L model is ≤10 mm, requiring pre-crushing or screening of larger feedstock before milling.
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).
