Materials Science · Gravity Beneficiation

Ilmenite Spiral Concentrator

A Humphreys-type spiral trough separates dense ilmenite (FeTiO&sub3;, ρ≈4.7 g/cm³) from lighter quartz sand (ρ≈2.65 g/cm³) using nothing but gravity, flow and a splitter. Tune the feed and watch the mineral balance respond in real time.

Spiral running

Concentration criterion
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IlmeniteQuartz

Feed rate Pulp density (solids) Wash water Splitter cut point

TiO₂ (ilmenite) recovery—share of feed ilmenite reporting to concentrate

Concentrate grade—ilmenite fraction of the concentrate stream

Mass yield—concentrate mass ÷ feed mass