The invention relates to a screw (30) of a solid bowl centrifuge (10), comprising a screw hub (32) extending along a longitudinal axis (12), and a screw flight (34) surrounding the screw hub; the screw hub (32) is provided with a lattice structure (56) in a section (36) of the longitudinal extension thereof.

A method and system for separating a suspension into solid and fluid components. The suspension is centrifuged about a substantially vertical axis of rotation to concentrate solid components in a first lower flow stream and fluid components in a first upper flow stream. The first upper flow stream may be centrifuged about a substantially vertical axis of rotation to concentrate solid components in a second lower flow stream and fluid components in a second upper flow stream. The first lower flow stream, the second lower flow stream, or both, may be centrifuged about a substantially horizontal axis of rotation to separate water from stackable dry tailings. The method and system may be applied to separation of tailings or other suspensions.

A screw centrifuge has a rotating, cylindrical drum (11) with openings (14,15) for discharge of settleable solids (16), floating solids (17), and separating liquid (18). A rotatable shaft (12) has openings (22) for infeed of the solids to be separated, and two sections of screw flights (13,13,13,23,23) working in opposite directions. A baffle disc (20) is arranged on the shaft between the infeed opening (22) and the discharge opening (14) for the settleable solids (16). The flight (13,13) of the screw for the settleable solids (16) surrounds the flight (23,23) of the screw for the floating solids (17), and also work in opposite directions. The screw section for the floating solids (17) is designed as a multi-channel screw. The outer flight (13,13) of the screw for the settleable solids (16) can also have several channels.

The invention relates to a screw (30) of a solid bowl centrifuge (10), comprising a screw hub (32) extending along a longitudinal axis (12), and a screw flight (34) surrounding the screw hub; the screw hub (32) is provided with a lattice structure (56) in a section (36) of the longitudinal extension thereof.

A method and system for separating a suspension into solid and fluid components. The suspension is centrifuged about a substantially vertical axis of rotation to concentrate solid components in a first lower flow stream and fluid components in a first upper flow stream. The first upper flow stream may be centrifuged about a substantially vertical axis of rotation to concentrate solid components in a second lower flow stream and fluid components in a second upper flow stream. The first lower flow stream, the second lower flow stream, or both, may be centrifuged about a substantially horizontal axis of rotation to separate water from stackable dry tailings. The method and system may be applied to separation of tailings or other suspensions.

A method and system for separating a suspension into solid and fluid components. The suspension is centrifuged about a substantially vertical axis of rotation to concentrate solid components in a first lower flow stream and fluid components in a first upper flow stream. The first upper flow stream may be centrifuged about a substantially vertical axis of rotation to concentrate solid components in a second lower flow stream and fluid components in a second upper flow stream. The first lower flow stream, the second lower flow stream, or both, may be centrifuged about a substantially horizontal axis of rotation to separate water from stackable dry tailings. The method and system may be applied to separation of tailings or other suspensions.

A method and system are for separating a suspension into solid and fluid components. The suspension is centrifuged about a substantially vertical axis of rotation to concentrate solid components in a first lower flow stream and fluid components in a first upper flow stream. The first upper flow stream may be centrifuged about a substantially vertical axis of rotation to concentrate solid components in a second lower flow stream and fluid components in a second upper flow stream. The first lower flow stream, the second lower flow stream, or both, may be centrifuged about a substantially horizontal axis of rotation to separate water from stackable dry tailings. The method and system may be applied to separation of tailings or other suspensions.

A scroll assembly (1) for a centrifuge (100) may be characterised in that it includes at least one lamellae pack assembly (11) proximate the first end (9) of the scroll (2). The lamellae pack assembly (11) may have a plurality of lamella plates (11d) and be positioned upstream of a weir (31) or an effluent exit port (4) that permits a liquid fraction (33) of said infeed slurry to discharge from the centrifuge (100). The lamella plates (11d) are preferably configured and arranged to bias fine solids (35) entrained within the liquid fraction (33) radially-outwardly or at least hinder their radially-inwardly migration as the liquid fraction (33) passes through the lamella plates (11d) and before the liquid fraction passes the weir (31) or effluent exit port (4), in order to produce discharged clarified liquids (36) which are substantially-free of the fine solids (35).