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.
Laboratory-scale units provide effective size reduction or de-agglomeration for small batches.
Mid-sized systems offer a range of options for larger batches intended for clinical trial or small-scale production.
Large scale systems for very large batches.
|MODEL||GRANUMILL JR.||GRANUMILL 007||GRANUMILL 014|
|Speed (RPM)||500 - 10000||500 - 5000||600 - 3600|
|Finished Particle Size (micron)||45 - 2000||45 - 2000||45 - 2000|
|Throughput lbs/hr (kg/hr)||0.2-60 (0.1-25)||2-2250 (1-1000)||4-3860) (2-1750)|
|Screen Width (inches/mm)||4/102||7/178||14/356|
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.
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.
In cooperation with ILC-Dover, we are able to provide custom-designed, flexible containment systems for GRANUMILL Jr. size reduction systems. The flexible enclosure set-up allows for use in both containment and non-containment applications, eliminating the need to purchase a second machine solely for containment use.
The robust GRANUMILL rotor is available in three different shapes and designed to endure even the most challenging applications. The shape of the rotor, combined with the geometry of the system’s housing allow it to achieve better results at lower speeds, reducing fines, noise, heat and dust.
GRANUMILL systems are equipped with quick-release clamps that allow product contact parts to be completely broken down in a matter of minutes. The components can then be soaked in a tub with detergent and cleaned in significantly less time than is required to clean other mills.