Thickener Settling Area & Solids Flux Calculator
Determine industrial thickener settling area, tank diameter, clarification vs thickening limits, and solids flux loading per the Talmage & Fitch method.
Slurry Throughput & Concentrations
Settling Kinetics & Thickener Type
Thickener Diameter & Solids Flux
| Governing Settling Area: | -- m² |
| Solids Loading Rate (SLR): | -- t/(m²·day) |
| Unit Area (UA): | -- m²/(t/day) |
| Clarification Rise Rate: | -- m/h |
| Overflow Water Clarification Rate: | -- m³/h |
| Underflow Slurry Discharge Rate: | -- m³/h |
| Water Recovery Efficiency: | -- % |
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Frequently Asked Questions
What is the Talmage and Fitch method for thickener design?
Published in 1955, the Talmage-Fitch method uses batch cylinder settling curves (tracking the mudline height over time) to determine the critical compaction time (tu) required to reach desired underflow density. It applies Kynch's kinematic wave theory of sedimentation to calculate the minimum solids flux capacity of the thickener without testing multiple individual pulp dilutions.
What distinguishes a High-Rate Thickener from a conventional thickener?
Conventional thickeners rely on uncoagulated gravity settling, requiring vast tank diameters (unit areas of 0.5 to 1.5 m² per tonne/day). High-Rate thickeners inject long-chain synthetic polyacrylamide flocculants directly into an engineered feedwell with de-aerating tangential vanes, forming dense aggregate flocs that settle 10 times faster, slashing required unit area to 0.08 to 0.25 m²/(t/d).
Why is tailings dewatering in thickeners so critical for environmental sustainability?
Modern mining operations process tens of thousands of tonnes of ore daily. Thickening tailings from 15% solids up to 55% to 68% paste recovers millions of cubic meters of fresh water directly back into the mill circuit, drastically reduces tailings dam footprint, and prevents catastrophic tailings dam failures.