A precipitate is to be continuously separated from a slurry. The solids concentration is 5 per cent and the slurry feed rate
5.5 m³/h. The relevant physical properties at the system operating temperature are: 

liquid density 1050 kg/m³, viscosity 4 cp (mNm^–2s),

solid density 2300 kg/m3, “cut-off” particle size 10 μm = 10 × 10^–6 m.

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Q, m³/h 100 10 1 0.1 0.01 0.001 10-10 Laboratory tubular Disc Laboratory disc 10-⁹ Tubular Scroll type Hydrocyclones. Basket type Gravity tank 0.1 m 10-8 10-7 10-6 10-5 10-4 Q/E = 2 x settling velocity under gravity, m/s 10-3 10-²