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Showing 1 to 6 of 6 for “"Minimum agitation speed"”.
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Minimum agitation speed for solid suspension and mixing time in a torispherical -bottomed pharmaceutical stirred tank under different baffling conditions
The minimum agitation speed, NS, required to just suspend solid particles dispersed in water was experimentally determined in this work for a glass-lined type of mixing tank provided with a torispherical bottom and agitated with a retreat-blade impeller under different baffling configurations. Ns …
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Novel experimental method for the determination of the minimum agitation speed for solids suspension in flat-bottomed stirred tank reactors
Knowledge of the minimum agitation speed, Njs, required to suspend finely divided solids in vessels stirred by an impeller is a critical parameter to properly operate industrial tanks in a large number of industrial operations. The most common experimental approach to measure N_{js} is that of …
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Experimental determination of solids suspension with angled impeller in a pharmaceutical mixing vessel
… it is critical to know the value of the minimum agitation speed at which solids become just suspended,N_{js}. Despite their common use in industry, and especially the pharmaceutical industry, these systems have received little attention in the literature in general and as far as their …
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Experimental determination of the agitation requirements for solids suspension in dissolution systems using a mini paddle apparatus
… available on mini vessels, and especially on the agitation speed needed to prevent "coning" effects. Typically during dissolution testing, a disintegrating tablet becomes rapidly fragmented, and the resulting solid particles may or may not become suspended depending on the agitation speed of the …
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Single and multiphase mixing in partially filled stirred vessels
… emptied or filled. Even when H/T<1, sufficient agitation must still be provided in order to attain the desired process objectives. When the impeller submergence is reduced as a result of lowering the liquid level, the fluid dynamics of even a single-phase stirred liquid can become quite complex, …
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Hydrodynamics, dissolution, and mass transfer effects in different dissolution testing apparatuses and laboratory systems
… higher release rate. In addition, the minimum agitation speed, N_{js}, to achieve particle suspension was investigated. A novel method to determine N_{js} was first developed and then applied to determine N_{js} as a function of different operating variables. Similarly, the …