Laboratory Products
New Aeration Control Unit for FT4 Powder Rheometer
Feb 13 2006
The bulk properties of powders can be greatly affected by even small amounts of entrained air. The aeration control unit allows evaluation at very low air velocities down to 2mm/min. Aeration at higher velocities up to 2000 mm/min can examine the fluidisation behaviour that has important practical processing implications in many industries. These include toner production, powder coatings and pharmaceutical manufacturing.
The FT4 with the new aeration control unit can be used to determine the flow properties specification needed to optimise production and achieve the required product quality. In addition, the system can be used on a day-to-day basis to verify that powder flow properties meet the necessary specifications, for predictable and consistent processing performance.
Powders always contain air and the amount significantly alters the flowability of the powder bulk. Consolidation removes air and increases the friction between powder particles causing high resistance to flow. Aeration reduces flow resistance and can result in fluid-like behaviour. The rate of release of entrained air from a powder bulk is another important characteristic that can be determined using the FT4 with aeration control unit.
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