The Vane Feedwell

A feedwell with an inner floor of vanes separating it into two chambers is the answer. The upper chamber is mixed using tangential feed entry and directional feed dilution whilst the lower chamber is maintained as a low shear zone that allows aggregates to grow prior to being evenly distributed into the main thickener body.
Extensive development and modelling of this idea, and others, by Outotec has led to the design seen in figure 👇. During the development phase Outotec, through their sponsorship of the AMIRA P266E “Improving Thickener Technology” project, engaged CSIRO’s Computational Fluid Dynamic modellers to verify and improve on the Next Generation design.

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OTE_Vane_Feedwell
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