A feed box for a decanter centrifuge has a housing with a hollow interior, the housing having a top with an inlet therethrough, a bottom, sides, and opposing open ends, wherein the inlet and the open ends are in fluid communication with the hollow interior. A liner shaped complementary to the hollow interior of the housing, has a top, a bottom, sides, opposing ends, an opening through the top of the liner below the inlet, and a channel through the liner between the opposing ends in fluid communication with the inlet.

A centrifuge separator device for use in mining gold ore receives bulk quantities of gold bearing materials through a port in a central vertical pipe, diverting the materials through a series of rotating baffles into a multi-tiered bowl, with a variable speed bowl drive system turning the bowl and the baffles at a selected speed while framework, including a channeled bin, gussets and a plurality of blades extending a plurality of upper and lower cutters, remains stationary, forcing the materials to separate by density, forcing the lighter materials up and over the rotating bowl into a channeled bin for further disposal through an exit port in the channeled bin, leaving the heavier gold bearing ores in the lower part of the bowl for collection and further classification.

A centrifuge separator device for use in mining gold ore receives bulk quantities of gold bearing materials through a port in a central vertical pipe, diverting the materials through a series of rotating baffles into a multi-tiered bowl, with a variable speed bowl drive system turning the bowl and the baffles at a selected speed while framework, including a channeled bin, gussets and a plurality of blades extending a plurality of upper and lower cutters, remains stationary, forcing the materials to separate by density, forcing the lighter materials up and over the rotating bowl into a channeled bin for further disposal through an exit port in the channeled bin, leaving the heavier gold bearing ores in the lower part of the bowl for collection and further classification.

A device for the processing and separation of biological fluids into components comprises a hollow centrifugal processing chamber (10) fitted with an inlet/outlet head (20) and preferably with an axially movable piston (18). The inlet/outlet head has two separate inlets/outlets, for instance an axial inlet (29) and a lateral outlet (40). The processing chamber (1) is fitted with an internal flow guide (30) enabling operation of the device in a continuous processing mode wherein biological fluid to be processed is continuously intaken by say the axial inlet (29) and at the same time processed components are continuously removed via say the lateral outlet (40). The continuous processing flow can be driven by an external peristaltic pump (59) and/or by axial displacement of a piston (18) in the chamber (10).

A device for the processing and separation of biological fluids into components comprises a hollow centrifugal processing chamber (10) fitted with an inlet/outlet head (20) and preferably with an axially movable piston (18). The inlet/outlet head has two separate inlets/outlets, for instance an axial inlet (29) and a lateral outlet (40). The processing chamber (1) is fitted with an internal flow guide (30) enabling operation of the device in a continuous processing mode wherein biological fluid to be processed is continuously intaken by say the axial inlet (29) and at the same time processed components are continuously removed via say the lateral outlet (40). The continuous processing flow can be driven by an external peristaltic pump (59) and/or by axial displacement of a piston (18) in the chamber (10).

Pusher centrifuges having screen drums rotatable about axes of rotation are used for separating a mixture into solid cake and into liquid phase. Pusher centrifuges may further have pusher bases arranged in the screen drums and arranged to be movable to and fro alternately in a first pushing direction and a second pushing direction along the axis of rotation that are used in order for the solid cake to be alternately displaced along the axis of rotation. The mixture is introduced into a first empty space or into a second empty space using a feed device. The first empty space is established on a displacement of the solid cake by the pusher base in the first pushing direction and the second empty space is established on a displacement of the solid cake by the pusher base in the pushing direction opposite to the first pushing direction.

Pusher centrifuges having screen drums rotatable about axes of rotation are used for separating a mixture into solid cake and into liquid phase. Pusher centrifuges may further have pusher bases arranged in the screen drums and arranged to be movable to and fro alternately in a first pushing direction and a second pushing direction along the axis of rotation that are used in order for the solid cake to be alternately displaced along the axis of rotation. The mixture is introduced into a first empty space or into a second empty space using a feed device. The first empty space is established on a displacement of the solid cake by the pusher base in the first pushing direction and the second empty space is established on a displacement of the solid cake by the pusher base in the pushing direction opposite to the first pushing direction.

Provided is a centrifugal field-flow fractionation device in which a liquid sample is less likely to leak from a channel and attachment and detachment work of a channel member is facilitated. By integrally forming an outer peripheral surface 162 and an inner peripheral surface 163 of a channel member 16, the channel member 16 is configured as one hollow member having a channel 161 formed inside. Thus, pressure resistance performance of the channel member 16 is improved, formation of a gap in the channel 161 can be prevented, and deterioration in sealing performance due to secular change is not generated. Accordingly, a liquid sample is less likely to leak from the channel 161. Further, since the channel member 16 can be handled as one member, attachment and detachment work of the channel member 16 is facilitated.

A system for obtaining plasma enriched in platelets is disclosed which is closed to the atmosphere. The system includes: a collection tube containing an anticoagulant portion and a separation gel; a first collection syringe adapted to collect a portion of fluid relatively depleted in platelets from said collection tube after centrifugation; and a second collection syringe adapted to collect plasma enriched in platelets from said collection tube after centrifugation, said second collection syringe further comprising a filter unit adapted to filter cells included in said plasma enriched in platelets.

A system for obtaining plasma enriched in platelets is disclosed which is closed to the atmosphere. The system includes: a collection tube containing an anticoagulant portion and a separation gel; a first collection syringe adapted to collect a portion of fluid relatively depleted in platelets from said collection tube after centrifugation; and a second collection syringe adapted to collect plasma enriched in platelets from said collection tube after centrifugation, said second collection syringe further comprising a filter unit adapted to filter cells included in said plasma enriched in platelets.