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 grinding cylinder and stirring components must be selected from materials compatible with the processed material to prevent contamination or chemical attack. The loading capacity, feed size, speed range, and grinding temperature must be maintained within the specified limits to ensure safe operation and product quality.
- Material Compatibility: Grinding cylinder and stirring component materials must be chosen to avoid contamination and wear when processing abrasive or reactive substances.
- Loading Capacity: Do not exceed the maximum loading capacity of 7 L to prevent mechanical overload and inefficient grinding.
- Feed Size Limit: Feed particle size must not exceed 10 mm to prevent clogging and damage to the grinding media and mill.
- Speed Range: Operating speed must be set within the 50–320 rpm range to maintain grinding efficiency and avoid mechanical overstress.
- Temperature Control: The jacket cooling system must be engaged to control grinding temperature and prevent thermal degradation of heat-sensitive materials.
Initialize the mill by selecting compatible grinding media and loading material within the specified capacity. Operate the mill within set speed and temperature limits to achieve the desired particle size and ensure safe grinding.
Required Equipment: Atomfair JM-20L Stirred Ball Mill
- Prepare Grinding Media and Material
Select appropriate grinding media and load the grinding cylinder with media and material up to 7 L capacity. - Set Operating Parameters
Set the speed using the frequency converter and configure the desired grinding time and temperature control via the jacket. - Start Grinding Cycle
Engage the stirring rod and initiate the grinding cycle, monitoring for vibration or temperature anomalies. - Discharge Ground Material
Lift the stirring rod automatically and tilt the grinding cylinder to discharge the ground slurry.
What is the trade-off between feed particle size and achievable discharge fineness when using the Atomfair JM-20L for ultra-fine grinding?
The JM-20L accepts a maximum feed particle size of ≤10 mm and can achieve a discharge particle size of ≤1 μm, but this performance depends on selecting the correct grinding media size and speed. Larger media produce coarser powder, while smaller media yield finer powder; combining appropriate media ratios with speed adjustment (60–380 rpm) is required to reach the ≤1 μm target without sacrificing throughput.
Can the JM-20L stirred mill be integrated with existing laboratory cooling or circulation systems for temperature-sensitive materials?
Yes, the grinding cylinder is designed with a jacket that allows precise control of grinding temperature, and the mill supports optional circulation and temperature adjustment functions. This enables direct integration with external chillers or recirculating coolers to manage heat buildup during extended runs, which is critical for thermally labile materials such as pharmaceuticals or certain coatings.
What are the infrastructure and handling requirements for operating the JM-20L with different wear-resistant grinding cylinder materials?
The JM-20L supports optional grinding cylinders and stirring components made from stainless steel, corundum ceramic, polyurethane, or zirconia, each requiring different cleaning protocols and media compatibility. The mill features automatic lifting of the stirring rod and free tilting of the grinding cylinder for easy media and material exchange, but operators must ensure the selected liner material is chemically compatible with the slurry to avoid contamination or accelerated wear.
The Atomfair JM-20L stirred mill offers high energy efficiency and precise temperature control via jacketed cylinder, suitable for ultra-fine grinding down to 1 μm from feed up to 10 mm. However, optimal performance depends on careful selection of grinding media and speed parameters.
Positive
- High energy utilization and power density: The mill achieves outstanding energy-saving performance through high energy utilization rate and high power density, reducing operational costs during prolonged grinding runs.
- Precise temperature control via jacket: The grinding cylinder is designed with a jacket that allows precise control of grinding temperature, critical for heat-sensitive materials or processes requiring strict thermal management.
Trade-offs
- Requires media selection expertise: Grinding performance depends on selecting appropriate media size, shape, and ratio combined with speed adjustment; suboptimal choices reduce efficiency or fineness.
- Feed size limited to ≤10 mm: Maximum feed particle size is 10 mm and discharge fineness is ≤1 μm; larger feed materials require pre-milling, adding an extra processing step.
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).
