| Q: What are the differences between a pancake mill (MICRO-JET) and a loop mill (JET-O-MIZER)? |
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A: A pancake mill is a horizontally designed jet mill, while a loop mill is a vertically oriented jet mill. Both are equipped with static classification. The basic differences are highlighted below:
• Both mills are capable of grinding to 1-10 microns, but a pancake mill (MICRO-JET) will grind a few microns finer at the same processing conditions. As such, a pancake mill should be used if you are looking to obtain maximum grinding and surface area.
• A pancake mill, due to its simple geometry, is easy to line with a variety of materials such as ceramics or special alloys for use with abrasive products. Similarly, it can be lined with PTFE or UHMW polyethylene for sticky products.
• A pancake mill typically produces a particle size distribution with a high concentration of fine particles.
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• A loop mill (JET-O-MIZER) is simpler to feed with a wide variety of materials. It does not experience the “blow-back” problems that could occur when feeding very light bulk density materials into a pancake mill. Therefore, it does not require as much direct attention while operating
• Because the loop mill is easier to feed with all materials, there is no required ramp up of pressure when starting the mill. In effect, the operating pressures can be set before feed is introduced into the mill, and startup of the mill is simpler requires less time.
• The JET-O-MIZER models have the widest range of throughput, from 1-gram batches to rates as high as 3 tons per hour.
• A loop mill typically produces a particle size distribution with a normal bell-shaped curve and less fines. |
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