Size reduction systems
Size reduction systems
Impact & Screening Mills in a Single System
GRANUMILL® size reduction systems meet FDA SUPAC (Scale-Up and Post-Approval Changes) guidelines for both impact and screening mills, allowing for low-RPM screening of agglomerates in addition to high-speed impact milling. The mill’s versatile design combined with the new, removable containment option provides users with the flexibility to run a variety of processes for a range of applications on a single, cost-effective system
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MILL SPECIFICATIONS
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GRANUMILL JR.
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GRANUMILL 007
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GRANUMILL 014
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Speed (RPM)
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500 - 10000
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500 - 5000
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600 - 3600
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Finished Particle Size (micron)
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45 - 2000
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45 - 2000
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45 - 2000
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Throughput lbs/hr (kg/hr)
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0.2-60 (0.1-25)
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2-2250 (1-1000)
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4-3860) (2-1750)
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Height (in/mm)
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25/635
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80/2032
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80/2032
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Width (in/mm)
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12/304
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32/813
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40/1016
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Length (inches/mm)
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15/381
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60/1524
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60/1727
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Screen Width (inches/mm)
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4/102
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7/178
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14/356
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Size Reduction Solutions
Milling Your Way
Several style interchangeable rotors are available. Each rotor is designed with the main impact surface or blade being oriented circumferentially at a set distance from the axis of rotation. Since this surface is a constant distance from the axis of rotation, all particles impact the blade on an area that is traveling at a constant tip speed. Unlike segmented mill rotor designs that impart particles with surfaces of varying tip speeds, the Fluid Air rotor design mills particles with a tighter particle size distribution due to the constant impact speed.
Safety
Dust Free
All Fluid Air GRANUMILLs are designed for dust free milling. Mills act like pumps pulling air in from the inlet of the mill, pushing it out of the discharge. This is the source of mill dusting problems. Fluid Air mills are designed to prevent the infiltration of air on the inlet side with all sealed connections at all feed points.
The lack of air prevents dust particles from becoming airborne. Similarly, all discharge connections are sealed to prevent air and dust from escaping. When milling into a closed container, the air entrained in the milled product and air displaced from the collection container by the product must be properly vented to prevent over pressurization and dusting.
Fluid Air has specially designed containment systems that separate the particle from the airstream before it is vented from the system. These low velocity containment systems utilize high efficiency FDA approved filters that prevent dust from leaving the milling system.
The combination of these two systems assures dust free milling, minimum operator exposure and a cleaner operating environment.
