Solid-Liquid Separation

Solid-Liquid Separation

also known as SLS · dewatering

Solid–liquid separation covers thickening, filtration, centrifugation and clarification. The choice depends on particle size and shape, solids concentration, whether the liquid or the solids is the product, and how dry the cake must be. Coarse, fast-settling solids favour filtration or gravity thickening; fine, slow-settling or compressible solids favour flocculation, precoat filtration or centrifugation.

Why it matters in practice

In hydrometallurgy this step decides how much entrained liquor follows the solids downstream, and therefore how much metal is lost or recycled. Wash efficiency here sets the recovery of the whole plant as much as the leaching step does.

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Related terms

Reference entry GL-SOLID-LIQUID-SEPARATION. Definitions on this page describe engineering practice in hydrometallurgical process design; they are not a substitute for test work on your own material.

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