Importance

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Abstract

A centrifugal separator for separating at least one liquid phase and a solids phase from a liquid feed mixture includes a frame, a drive member and a rotating part. The drive member is configured to rotate the rotating part in relation to the frame around an axis of rotation. The rotating part includes a centrifuge bowl enclosing a separation space and a sludge space. The separation space includes a stack of separation discs arranged coaxially around the axis of rotation and the sludge space is arranged radially outside said stack of separation discs. The centrifuge bowl includes an inlet for receiving the liquid feed mixture, at least one liquid outlet for a separated liquid phase, and at least one sludge outlet for a separated solids phase. The upper inner surface of the sludge space forms an upper sludge space angle β relative the axis of rotation as seen in an axial plane. The upper inner surface extends radially at least half the radial distance from the at least one sludge outlet to the radial outer edge of the stack of separation discs and the upper sludge space angle β is more than 5 degrees but less than 15 degrees.

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First Claim