Importance

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Abstract

A hydrocyclone comprising a vertical-axis separating chamber having an upper cylindrical portion and a lower, coaxial conically-tapering portion has: a tangential inlet at its upper end for a suspension to be classified; an upper, axial outlet for the overflow containing finer particles separated in the hydrocyclone in use; a lower axial outlet for the underflow containing coarser particles; and a hollow spigot surrounding the upper outlet and projecting into the separating chamber. The separation of coarse particles from the overflow is improved by the provision of an extension tube extending coaxially from the spigot into the separating chamber.

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First Claim