Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma while retaining the platelets and other factors. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.

Abstract: Process and apparatus for completely recovering the reusable components of an abrasive slurry used in slicing crystalline materials of silicon, quartz or ceramics when it becomes exhausted and enriched with undesired waste matter. The process consists of an initial centrifuge separation of the exhausted slurry as such and of a wet size-sorting treatment of the fraction containing the abrasive grains obtained from the centrifuge, carried out in a battery of hydrocyclones or centrifuges connected in series. The section for the recovery and purification of the abrasive grains comprises a multifunctional apparatus that performs all the required operations within a single pressure vessel.

Abstract: A method and apparatus can separate and concentrate a selected component from a multi-component material. The multi-component material may include a whole sample such as adipose tissue, whole blood, or the like. The apparatus generally includes a moveable piston positioned within a separation container and a withdrawal tube that is operable to interact with a distal end of the collection container past the piston. Material can be withdrawn through the withdrawal tube.

Abstract: This invention provides a centrifugal microfluidic disk and methods for separating targets or cells and collecting the targets or cells in the centrifugal microfluidic disk by using the density gradient.

Abstract: Apparatus and methods for separating a higher-density component from a lower-density component of a mixed flow, with the apparatus including a pressurized casing with a plurality of rotary separators disposed in parallel therein. The casing includes a fluid entrance assembly, a fluid outlet assembly, and a drain. The rotary separators each include an inlet fluidly coupled with the inlet of the fluid entrance assembly, a discharge in communication with the fluid outlet assembly, and an outlet passage in communication with the drain.

Abstract: A centrifuge vessel is configured to have at least two chambers therein separated by a divider, and with a spillway around a lip at an end of the divider to join the chambers. After centrifugation differing density phases of an original sample remain on opposite sides of the divider. Separate extraction ports are provided for removal of differing density phases of the original sample from opposite sides of the divider. A method of use of the centrifuge vessel includes centrifugation and extraction at differing orientations of the vessel for convenient and reliable extraction of differing density fractions from the original sample.

Abstract: A device for separating and isolating components of a biological fluid comprising a container for containing the fluid to be processed, a tube cap assembly for closing the container while providing filling and extraction communication therewith, a float assembly disposed within the container for funneling and controlling biological fluid flow into an inverted domed shaped isolation chamber within the float and controlling the biological fluid flow out of the isolation chamber for effecting an encapsulation or a sealed isolation of at least one component or fraction of the biological fluid flow within the isolation chamber during a centrifugation process. The device further comprising a flexible tube for connecting an extraction passageway disposed within the float assembly and an extraction valve of the tube cap assembly for allowing extraction of at least the one component or fraction encapsulated or isolated within the chamber.

Abstract: A method of washing blood mixed with undesirable elements not normally found in healthy whole blood to remove the undesirable elements, the method comprising: separating the blood into components according to relative densities of the components with a rotating centrifuge bowl; providing a port through which fluid exits the bowl, the exiting fluid having a concentration of undesirable elements; flowing washing solution into the centrifuge bowl at an initial flow rate; monitoring the fluid exiting the bowl with an optical sensor having an output signal indicative of the composition of the exiting fluid; and increasing and decreasing the flow rate of the wash solution as a function of the output signal.

Abstract: An apparatus for use with a centrifugal cellular separation device that comprises a rotor rotatable about an axis of rotation is provided that comprises a fluid separation chamber having a first port, a second port spaced apart from the first port, and a third port located intermediate the first port and the second port. The fluid separation chamber has a cross sectional area generally transverse to a radius extending from the axis of rotation that varies between the first port and the second port. The fluid separation chamber is adapted to be mounted to the rotor so as to be rotatable therewith, with the first port located at a greater radial distance from the axis than the second port, and the third port located radially intermediate the first port and the second port.

Abstract: A liquid recovery system and methods of recycling water from liquid-solid mixture such as slurry produced by pavement grinding machines, drilling fluid containing cuttings, and septage. The system includes a storage tank or a settling tank, a centrifuge in flow communication with the storage tank or settling tank, such as a hydraulic centrifuge, a solids storage component, and a cleaned liquid storage tank in flow communication with the centrifuge. The system may also include a porous conveyor belt for removal of large solids from the mixture prior to centrifugation and may also include one or more blowers directed at the porous conveyor.

Abstract: A centrifuge for separating blood having a camera observing fluid flow, and a controller controlling the flow. The location of an interface is detected by image processing steps, which may comprise the steps of “spoiling” the image, “diffusing” the image, “edge detection”, “edge linking”, “region-based confirmation”, and “interface calculation”. “Spoiling” reduces the number of pixels to be examined preferentially on orthogonal axis oriented with respect to the expected location of the interface or phase boundary. “Diffusing” smoothes out small oscillations in the interface boundary, making the location of the interface more distinct. “Edge detection” computes the rate of change in pixel intensity. “Edge linking” connects adjacent maxima. “Region-based confirmation” creates a pseudo image of the regions that qualify as distinct. “Final edge calculation” uses the points where the shade changes in the pseudo image, averages the radial displacement of these points for the interface position.

Abstract: The present invention discloses a column for incubating and/or isolating chemical and/or biological samples. Furthermore, a method for incubating and/or isolating chemical and/or biological samples as well as a method for separating liquids and solids from a disperse mixture is subject-matter of the present invention.

Abstract: A blood-collection system configured to permit selection of either collection and disposal of shed blood from a patient or collection and processing of shed blood for autologous transfusion back to the patient includes an automated blood-processing machine. The system may also include a blood-collection reservoir, a separation chamber, and a fluid conduit. The blood-collection reservoir may be engageable with the blood-processing machine so that the machine can identify and report the presence of blood in the reservoir. The separation chamber may also be engageable with the blood processing machine. The fluid conduit may be configured to selectively join the reservoir to the separation chamber by a quick-connect coupling.

Abstract: Fluid separation chambers are provided for rotation about an axis in a fluid processing system. The fluid separation chamber may be provided with first and second stages, with the first and second stages being positioned at different axial locations. In another embodiment, at least one of the stages may be provided with a non-uniform outer diameter about the rotational axis, which may define a generally spiral-shaped profile or a different profile for fractionating a fluid or fluid component. One or more of the stages may also have a varying outer diameter along the axis. The profile of the chamber may be provided by the chamber itself (in the case of rigid chambers) or by an associated fixture or centrifuge apparatus (in the case of flexible chambers).

Abstract: Centrifuges have been designed in the past for centrifuging multi-welled containers, but they are limited in centripetal acceleration or have a large footprint. The invention provides a centrifuge with a high centripetal acceleration and imbalance tolerance while maintaining a small footprint and being able to integrate with laboratory automation equipment. Methods and apparatuses for centrifugation include a rotor assembly positioned within a shield assembly suspended in a centrifuge. The rotor assembly is operably connected to the motor for rotating payloads (e.g., multi-welled containers) around an axis. The shield assembly is positioned such that the center of mass is aligned with the axis of rotation of the rotor assembly and the plane containing the rotational imbalance force vector. This alignment allows rotation of the container with an acceleration of at least 2000 g (or at least 3000 g, 4000 g, 5000 g, etc.).

Abstract: A spinning force system and methods of operation are provided for measuring a characteristic of a sample. The system includes a detection module having a light source for illuminating the sample and an objective being aligned to the light source to define a light path for producing an image of the sample. A rotor is mechanically coupled to the detection module and configured to rotate the light path for applying a force to the sample. The force may include a centrifugal force and other forms of force (such as a viscous drag force) resulted from the rotation. In some examples, the force is applied in a direction that is not parallel to a surface of the sample.

Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma while retaining the platelets and other factors. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.

Abstract: The invention is a method and apparatus for processing tarry or resinous liquid suspensions derived from gasification, pyrolysis or drying of biomass. The suspensions are processed by a horizontal axis centrifuge having a discharge chamber containing a scraper to prevent centrifuge clogging or fouling, a volatiles exhaust system utilizing suction, and a means to isolate the gas and light solids radially of the inner liquid surface and thereby enabling the gas and light solids to be extracted continuously to a location outside the centrifuge bowl. The removed tar, char and volatiles can be used as fuel or recycled as feedstock. Polymers can be added prior to centrifugation to assist in solids/liquids separation. Tar, resin, char or volatiles depleted wet scrubber liquid can be recycled for further use or easily treated prior to disposal.

Abstract: The invention is a method of processing tarry or resinous liquids. Tarry liquids include wet scrubber liquids containing tars and chars derived from gasification, pyrolysis or drying of biomass. Resinous liquids include those derived from processing coniferous biomass. Tarry or resinous liquid is processed by a horizontal axis centrifuge having a discharge chamber containing a scraper to prevent centrifuge clogging or fouling. The removed tar and char can be used as solid fuel or recycled to the gasification or pyrolysis process. Polymers, for instance cationic polymers, can be added to the tarry or resin containing liquid prior to centrifugation to assist in solids/liquids separation. Removed resin can be recycled for further use. Tar, char or resin depleted wet scrubber liquid can be recycled for further use or more easily treated prior to disposal.

Abstract: A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.

Abstract: A method of mineralizing calcium from industrial waste comprising extracting calcium ions from a suspension of calcium rich granular particles and aqueous ammonium nitrate to form a calcium-rich first fraction and a heavy second fraction. The heavy second fraction is separated from the first fraction and the calcium-rich first fraction is carbonated with a gas comprising carbon dioxide to form a suspension of precipitated calcium carbonate and aqueous ammonium nitrate. The precipitate is separated from the aqueous ammonium nitrate by centrifugal means and the separated heavy second fraction comprises an enriched weight percent of iron.

Abstract: A cleaning apparatus for polluted scrubber fluid from an exhaust gas scrubber fluid loop includes means for bleeding off part of the polluted scrubber fluid from the scrubber fluid loop, a disc stack centrifugal separator for separating a pollutant phase and a cleaned scrubber fluid from said part. The separator includes a rotor enclosing a separation space with a stack of separating discs, a separator inlet extends into the separating space, a first separator outlet for cleaned scrubber fluid extending from said separating space, and a second separator outlet for the pollutant phase extending from the separating space. The cleaning apparatus includes means for conducting the part to the separator inlet, and means for discharging the cleaned scrubber fluid from the first separator outlet, and means for collecting the pollutant phase from the second separator outlet.

Abstract: A device for separating a solid matter-containing, liquid and pumpable tar suspension from a coking reaction with direct use of the separated solid matter contained therein. The device consists of a centrifuge, which is arranged in the upper inner region of a carbon-storing container, and the centrifuge is equipped with a feed nozzle for solid matter-containing, liquid tar and with a discharge nozzle for liquid tar centrifugate. In the lower part, the centrifuge is equipped with an outlet for the solid matter contained in the tar, whereby the tar-containing solid matter obtained from the tar suspension does not have to be delivered or transported. Also disclosed is a method is for separating a solid matter-containing, liquid and pumpable tar suspension with delivery-free use of the separated solid matter contained therein using the device and to the use of the coal mixed with the solid matter.

Abstract: Methods of producing collection tubes are presented. The methods include providing a separator substance that can rapidly polymerize in a short time to a desired hardness and disposing the separator substance within the lumen of the tube. The separator substance is formulated to have a density between an average density of a serum fraction of whole blood and a cell-containing fraction of whole blood, and to be flowable with whole blood. Upon centrifugation of a tube having blood, the separator substance forms a barrier between the whole blood fractions. The barrier rapidly hardens forming a solid barrier when triggered by a suitable energy source.

Abstract: A floating separating element for use in centrifugal separation of components of a physiological fluid comprises a positioning part and a separating part, where the positioning part is designed to automatically assume a position in a supernatant and a separating part is positioned at a desired location with respect to the interface between the supernatant and heavier components. In preferred embodiments the physiological fluids are blood or bone marrow aspirate, and the heavier components comprise red blood cells. The positioning part comprises the majority of the mass of the separating element and is thin so that differences in the position of the separating element with respect to the interface are small compared to differences in the densities of the separated components, particularly the component comprising red blood cells. A method allows red blood cells to move the separating element during decanting to ensure complete decant of the supernatant.

Abstract: A centrifuge for separating blood having a camera observing fluid flow, and a controller controlling the flow. The location of an interface is detected by image processing steps, which may comprise the steps of “spoiling” the image, “diffusing” the image, “edge detection”, “edge linking”, “region-based confirmation”, and “interface calculation”. “Spoiling” reduces the number of pixels to be examined preferentially on orthogonal axis oriented with respect to the expected location of the interface or phase boundary. “Diffusing” smoothes out small oscillations in the interface boundary, making to the location of the interface more distinct. “Edge detection” computes the rate of change in pixel intensity. “Edge linking” connects adjacent maxima. “Region-based confirmation” creates a pseudo image of the regions that qualify as distinct. “Final edge calculation” uses the points where the shade changes in the pseudo image, averages the radial displacement of these points for the interface position.

Abstract: A nanotube separation method includes depositing a tag on a nanotube in a nanotube mixture. The nanotube has a defect and the tag deposits at the defect where a deposition rate is greater than on another nanotube in the mixture lacking the defect. The method includes removing the tagged nanotube from the mixture by using the tag. As one option, the tag may contain a ferromagnetic material and the removing may include applying a magnetic field. As another option, the tag may contain an ionic material and the removing may include applying an electric field. As a further option, the tag may contain an atom having an atomic mass greater than the atomic mass of carbon and the removing may include applying a centrifugal force to the nanotube mixture. Any two or more of the indicated removal techniques may be combined.

Abstract: A solid-bowl screw centrifuge includes a rotatable drum having a horizontal axis of rotation, which drum surrounds a centrifuging space. Further included is a screw which is arranged within the drum, the screw being rotatable at a different speed relative to the drum. Further included is at least one liquid discharge sealed from its surroundings and at least one solid discharge in a tapering region of the drum. Also included is an immersion disk on the screw which disk lies between a liquid feed and the solid discharge and divides the centrifuging space into a discharge space between the immersion disk and the solid discharge, and a separation space between the immersion disk and the liquid discharge. The centrifuge includes a device for charging the separation space with a gas. A process for operating for the solid-bowl centrifuge is also disclosed.

Abstract: A process is disclosed which includes separating selected solids from a process stream with a selected solids mechanical processor containing a filter to produce a filtrate substantially free of selected solids and a retentate containing recovered selected solids. In one embodiment, the process stream contains an increased amount of liquid is provided to a downstream mechanical processor as compared to a process stream having no selected solids mechanical processor upstream. The selected solids mechanical processor can be a dynamic filtration device or a static separation device. Bio-oil recovery efficiency, quantity, and quality can be improved as a result.

Abstract: Systems, methods and apparatus are described for a centrifuge module of a laboratory analysis system. Specimen containers may be weighed, loaded into a centrifuge adapter, and transported to a centrifuge module by an adapter shuttle. A centrifuge adapter gripper may transport the centrifuge adapter into a centrifuge for centrifugation. The centrifuge adapter may be transported by the centrifuge adapter gripper to an adapter shuttle for unloading of the specimen containers, which may be performed by a specimen container gripper. A centrifuge drawer that allows a centrifuge to be extended from its installed position is also described. Additional embodiments pertain to a sequence for replacing, in a centrifuge, a set of centrifuge adapters that have been centrifuged with a set of centrifuge adapters that have not been centrifuged. A sequence for loading specimen containers into centrifuge adapters is also described.

Abstract: Disclosed are a method and an apparatus for separating metallic CNT and semiconducting CNT, comprising treating with a physical separation means of centrifugation, freezing-thawing-squeezing, diffusion, permeation or the like using a gel containing CNT as a dispersed and isolated state (CNT-containing gel), to thereby make semiconducting CNT exist in gel and make metallic CNT exist in solution.

Abstract: A system for automatically processing a biological specimen is provided that includes an elevator comprising a plurality of shelves configured to receive a plurality of sample trays. The trays may comprise a plurality of sample containers containing a sample and having a plurality of respective caps engaged therewith. The trays may further include a plurality of centrifuge tube racks each containing a plurality of centrifuge tubes. The system may include a first transport mechanism, a second transport mechanism and a third transport mechanism. The system may include a chain-of-custody device configured to read identifiers on each of the containers. The system may also include a pipetting device configured to remove a portion from the sample containers and dispense the sample into the centrifuge tubes.

Abstract: Systems and methods that can be used to detect target materials in a suspension are disclosed. A suspension suspected of containing a target material is added to a tube, and a programmable float is added to the same tube. In one aspect, the mass of the float may be programmed by selectively adding one or more objects to the float interior so that when the tube, float and suspension are centrifuged together to separate the various materials of the suspension into layers along the axial length of the tube, the float is positioned at approximately the same level as a layer that contains the target material. The float expands the axial length of the layer between the float outer surface and the inner surface of the tube.

Abstract: A separator that uses centrifugation to fractionate a suspension such as blood comprises a separation container and a buoy. The buoy is carried in the separation container and has a tuned density that is configured to reach an equilibrium position in a suspension. The guide surface is carried on the buoy upper surface and is inclined to an accumulation position near a buoy perimeter. The buoy suspension fractionation system can be used in a method of isolating a fraction from a suspension, and in a method for re-suspending particulates for withdrawal.

Abstract: This invention is directed to a method of collecting and separating whole blood into components. The method includes the steps of adding an anticoagulant having an acidic pH to a bag for collecting and/or separating whole blood, collecting whole blood in the bag, loading the bag containing anticoagulated whole blood on a rotor, spinning the bag on the rotor to separate the whole blood into at least one component; and squeezing the bag on the rotor to push the component from the separation bag into at least one satellite bag.

Abstract: A separator disk for use in centrifugal separation of components is designed to automatically position itself during separation at the interface between the supernatant and the remaining components. Preferably the interface is between plasma and red blood cells.

Abstract: The present invention relates to separating one or more of sand and other particulate matter from a mixture of animal waste and water. The present invention can help to control the discharge of noxious odors while processing material containing animal waste. An exemplary apparatus in accordance with the present invention includes a cylindrical housing and a non-rotating collection table. An exemplary apparatus in accordance with the present invention includes optional shield provided inside the cylindrical housing that can help to capture the particulate matter and that can also help to reduce the discharge of noxious gas and odors from the apparatus.

Abstract: A centrifuge having a vertical axis of rotation. The centrifuge includes a rotatable drum configured to process an inflowing suspension, the rotatable drum including an assembly configured to supply a washing liquid into an interior of the drum. The centrifuge also includes at least one supply pipe arranged in the drum and configured to conduct the washing liquid into the interior of the drum.

Abstract: The centrifugation vessel includes an outer wall containing an interior space. A dam defines a barrier which divides the interior space into at least two regions including a catch basin defining a higher gee region and a reservoir defining a lower gee region. These regions are joined together over the dam. The dam includes a face which is preferably tapered to enable optimization of speed of separation of a sample placed within the vessel. The vessel is usable in a biological sample processing method by having the higher gee region of the vessel configured to have an elongate form and the volume optimized for collection of a higher density fraction of the sample. Supply and withdrawal tubes extend into the regions for reliable extraction and separate collection of differing density fractions after separation by centrifugation. A medium density fluid is used within the vessel to further isolate constituents of differing densities.

Abstract: The separation of single-walled carbon nanotubes (SWCNTs), by electronic type, using centrifugation of compositions of SWCNTs and surface active block copolymers in self-forming density gradient media.

Abstract: A continuous automated extraction system and method for physically extracting at least one liquid phase of a series of liquid microsamples which are taken beforehand in discrete packets, both in space and in time, and are in stored is provided. The method may include an extraction system having a centrifuge provided with a plurality of microholders, at least one of which is filled with the corresponding microsample and includes a filling upper portion that is extended by a separating lower portion of smaller cross section than that of the upper portion. Each filled microholder has a mass which is more than ten times the mass of this microsample, in such a way that it is possible to extract, by centrifugation, at a given instant, only a single microsample contained in a single microholder, or several microsamples contained in some or all of these microholders, progressively as the latter are filled.

Abstract: The present invention relates to a system comprising a hermetic centrifugal separator where the separator comprises a rotor including a separation chamber, an inlet channel for a mixture of components to be separated, a first outlet channel for receiving at least one separated light component, and a second outlet channel for receiving at least one separated heavy component.

Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma while retaining the platelets and other factors. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.

Abstract: Methods for separating liquids, such as oils from solids, such as drill cuttings, apply a centrifuge to process a solids-enriched output of a fluids/solid separation device. The centrifuge may be a horizontal decanter-type centrifuge. The output may be heated. In example implementations the centrifuge has a bowl angle of four degrees or less and a low fluid depth of two inches or less. The fluids/solids separation device may comprise a shale shaker and/or a main centrifuge for example. The output material may have a relatively high initial solids content, such as 50% or more.

Abstract: A centrifuge may include a bowl operative to rotate with respect to a stationary portion. The centrifuge may include at least one vibration sensor operative to generate vibration data representative of vibrational movement of portions of the centrifuge. The processor may monitor the vibration data as the bowl is being filled with a fluid. The processor may cause a drive device to increase the rotational speed of the bowl responsive to determining from the vibration data that the bowl has becoming substantially filled with a fluid.

Abstract: The preservation liquid addition system of the present invention enables a chemical liquid to be added to a blood cell component both easily and in a short period of time. The preservation liquid addition system is able to be placed on a centrifugal separator. The preservation liquid addition system has a blood bag, a preservation liquid bag, a mixed liquid bag, a first flow path and a static mixer. A blood component in the blood bag and a preservation liquid in the preservation liquid bag are sent to the static mixer through the first flow path, and a mixed liquid mixed by the static mixer is sent to the mixed liquid bag by centrifugal force of the centrifugal separator.

Abstract: In the removal of white blood cells from blood, the efficiency of white blood cell removal by a filter is improved. Centrifugal force is applied to blood placed in a blood bag by centrifugal separation to form a plurality of separation layers having a concentration gradient of white blood cells. The separation layers are passed through a filter in ascending order of white blood cell concentration to remove the white blood cells from the separation layers. The separation layers from which the white blood cells have been removed are received in a first blood component bag.

Abstract: The present invention relates to a device and a method for placing immiscible fluid phases in contact with each other by means of centrifugal force, in particular in order to extract compounds from one of said phases by another phase. Said device comprises at least one contacting unit (3*) which is capable of being rotated about an axis (X?X) and which includes a plurality of cells (210, A, D) intended to be passed through consecutively by said phases, in a given flow direction, each cell being provided with two inlet/outlet channels (214 and 215) which fluidly connect the cells together in pairs and which lead into each cell, respectively, via two inlet/outlet openings, which are proximal (214a) and distal (215a) relative to the said axis, respectively.

Abstract: A centrifugal concentrator in which there is a common shaft for the drive motor and concentrator bowl. The cost of bearing assemblies is thereby minimized. The bowl is driven and suspended from above to keep the motor out of the slurry area and maximize the simplicity of the design. A fluidizing fluid is delivered through the common shaft.

Abstract: A screen bowl centrifuge having first and second conically diverging screen sections. And a method of separating solids from liquid of a slurry includes feeding a slurry from a conveyor hub to a cylindrical section of a bowl extending about the conveyor hub; scrolling the solids along the cylindrical section in a first direction and a majority of the liquid in a second direction opposite the first direction using at least one helical blade extending from the conveyor hub; and sliding the solids from the cylindrical section along a conically diverging screen section of the bowl that includes a first conically diverging section and a second conically diverging section, the first conically diverging section extending at a first angle to the axis and the second conically diverging section extends at a second angle to the axis, and the first angle is different from the second angle.