Description
ATOMFAIR LNPM-6C LIQUID NITROGEN PLANETARY BALL MILL -40°C 4-STATIONRESEARCH & PRODUCTION GRADE EQUIPMENT
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TAILORED SOLUTIONS FOR RESEARCH & PRODUCTION
Contact our engineering team for technical support or official quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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Continuous liquid nitrogen injection maintains the grinding chamber at -40°C to 20°C, with consumption of approximately 4–5 L/h under 0–10°C operating conditions. Adequate ventilation is required in the operating area due to nitrogen gas displacement, and cryogenic safety protocols must always be followed when handling liquid nitrogen.
- Temperature Control Constraint: The grinding environment must be maintained within -40°C to 20°C via continuous liquid nitrogen injection to prevent thermal degradation of temperature-sensitive materials.
- Ventilation Requirement: Adequate ventilation is mandatory in the operating area to mitigate oxygen displacement risks from nitrogen gas accumulation.
- Cryogenic Safety Protocol: Operators must follow established cryogenic safety protocols for handling liquid nitrogen to prevent cold burns, asphyxiation, or equipment damage.
This procedure covers the safe initialization and operation of the LNPM-6C liquid nitrogen planetary ball mill for cryogenic grinding. Proper setup ensures consistent temperature control and prevents material or equipment damage.
Required Equipment: LNPM-6C Main Grinding Unit, 50 L Liquid Nitrogen Tank, Grinding Jars (Ordered Separately), Grinding Balls (Ordered Separately)
- Verify Ventilation and Safety Gear
Confirm the operating area has adequate ventilation and that all personnel wear appropriate cryogenic safety gear before handling liquid nitrogen. - Connect Liquid Nitrogen Supply
Connect the 50 L liquid nitrogen tank to the mill's insulated chamber inlet, ensuring all fittings are secure and leak-free. - Load Grinding Jars and Media
Fill each 1.5 L grinding jar to approximately 40% capacity with grinding balls and add the sample material, then seal the jars securely. - Set Temperature and Rotation Parameters
Set the desired temperature within the -40°C to 20°C range and adjust rotation speed between 70 and 670 rpm according to material requirements. - Initiate Liquid Nitrogen Flow and Grinding
Start the liquid nitrogen flow to the chamber, allow the temperature to stabilize, then begin the grinding cycle. - Monitor Consumption and Temperature
Monitor liquid nitrogen consumption (approximately 4–5 L/h under 0–10°C conditions) and chamber temperature throughout the grinding process. - Shut Down and Purge Safely
Stop the grinding cycle, close the liquid nitrogen supply, and allow the chamber to return to ambient temperature before opening.
How does the LNPM-6C's maximum rotation speed (670 rpm) compare to smaller LNPM models, and what is the performance trade-off for its larger 6 L capacity?
The LNPM-6C has a maximum rotation speed of 670 rpm, which is lower than the 810 rpm of the LNPM-1C, -2C, and -4C models. This reduction is a deliberate trade-off to maintain stable cryogenic grinding performance with the larger 6 L total volume (4 × 1.5 L jars) using the same 0.75 kW motor. The lower speed compensates for the increased inertia and cooling demand, ensuring consistent temperature control across all four stations.
What types of grinding jars are compatible with the LNPM-6C for vacuum or inert atmosphere cryogenic grinding?
The LNPM-6C is compatible with vacuum grinding jars that enable inert gas or vacuum atmosphere processing, but these jars must be ordered separately. Available jar materials include WC-Co, Al₂O₃, Agate, YSZ, SS, PU, Ceramic, and Nylon; however, for vacuum applications, users should verify vacuum compatibility with the jar manufacturer for their specific material selection. The four-station platform can accommodate both standard and vacuum jars simultaneously.
What are the essential safety and infrastructure requirements for operating the LNPM-6C in a laboratory?
The LNPM-6C requires a stable 220V/110V power supply and adequate ventilation to prevent oxygen displacement from nitrogen gas. Liquid nitrogen consumption is 4–5 L/h under 0–10°C operating conditions, so the included 50 L LN2 tank allows approximately 10–12.5 hours of continuous use. Operators must follow cryogenic safety protocols, including wearing protective gear and ensuring the workspace is well-ventilated. The mill weighs 93 kg and measures 750×470×590 mm, requiring a sturdy lab bench.
The LNPM-6C is a 4-station cryogenic planetary ball mill with -40°C to 20°C temperature control, 6 L total volume, and vacuum/inert atmosphere compatibility, enabling parallel processing of temperature-sensitive materials under controlled environments.
Positive
- Cryogenic temperature control down to -40°C: Continuous liquid nitrogen injection rapidly absorbs grinding heat, maintaining a stable low-temperature environment essential for processing heat-sensitive materials such as electronic ceramics, phosphors, and battery precursors.
- Four-station independent sample processing: The four-position grinding platform allows simultaneous preparation of four different samples in a single run, significantly increasing experimental throughput for comparative studies without cross-contamination.
Trade-offs
- Continuous cryogen supply requirement: Liquid nitrogen consumption of 4–5 L/h under 0–10°C operating conditions demands a dedicated LN2 tank (50 L included) and regular refilling, adding logistical overhead and consumable cost to laboratory operations.
- Grinding media ordered separately: Jars and grinding balls are not included with the main unit, requiring separate purchase and careful material selection to match sample chemistry and avoid contamination, increasing initial procurement complexity.
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).
