A separation apparatus is disclosed, comprising: a layerizer arranged to bring a group of particles in a layer on a transport surface with a constant spatial relation of the particles relative to each other in the layer; an identifier arranged to identify particles in the group of particles that have a specific property; a separator arranged to separate the particles in the group based on a difference in affinity between the particles and the separator; an affinity modifier arranged to modify said affinity for identified particles relative to non-identified particles in the group. The layerizer comprises a recirculating transport surface on which the particles of the layer are carried. The transport surface is arranged to move along a transport trajectory as a rigid plane. Further, a method for separation of particles from a group of particles is disclosed.

Vibratory screening machines that include stacked screening deck assemblies are provided. In some embodiments, at least one of the vibratory screening machines can include an outer frame, an inner frame connected to the outer frame, and a vibratory motor assembly secured to the inner frame for vibrating the inner frame. A plurality of screen deck assemblies can be attached to the inner frame in a stacked arrangement, each configured to receive replaceable screen assemblies. The screen assemblies can be secured to respective ones of the plurality of the screen deck assemblies by tensioning the screen assemblies in a direction that a material to be screened flows across the screen assemblies. An undersized material discharge assembly can be configured to receive materials that pass through the screen assemblies, and an oversized material discharge assembly can be configured to receive materials that pass over the screen assemblies.

Disclosed embodiments include a removable support structure for a vibratory screening machine. The removable support structure is a single structure including one or more of plastic, metal, and composite materials and may be configured to provide mechanical support to one or more screening assemblies of the vibratory screening machine. The removable support structure may further be configured to be removably fastened to the vibratory screening machine. The removable support structure may be a single thermoplastic injection molded piece or may be a single injection molded piece that includes nylon, carbon, and graphite. The removable support structure may have a concave shape that is configured to mechanically support a screening assembly held under compression or may have a convex shape that is configured to mechanically support a screening assembly held under tension. A disclosed wear protective covering, made of a flexible material, provides wear protection to the removable support structure.

The present disclosure relates to the technical field of food equipment design and processing, and provides a high-efficiency water-saving separation screen for starch slurry and residue which includes a horizontal screen drum, a screen mesh, a screw propelling extrusion rod, a rotation drive unit and a flushing spray pipe; one side of the horizontal screen drum is provided with a feeding inlet, and the other side of the horizontal screen drum is provided with a slurry outlet and a residue outlet; the screen mesh is in a cone shape, and the cross-sectional diameter of the screen mesh gradually decreases from the feeding inlet to the residue outlet; the screw propelling extrusion rod is arranged in the screen mesh and includes a screw propelling extrusion rod shaft and a screw blade; the rotation drive unit drives the screen mesh and the screw propelling extrusion rod to rotate in opposite directions; and the flushing spray pipe is used for flushing slurry and residue on the screen drum. The present disclosure further provides a separation method adopting the aforementioned separation screen. The synergistic effects of mechanical disturbance and hydraulic overflow washing and screening are simultaneously exerted by the screen, compared with traditional curved surface screens and high-speed centrifugal screens, the usage amount of clean water and the generation amount of wastewater can be reduced, and the concentration of obtained starch slurry is increased; and the moisture content of potato residue extruded and separated out by the screen is low, and thus subsequent utilization is facilitated.

A process for preparing whitened fly ash includes the steps of: (a) subjecting fly ash to a size classification step to obtain size classified fly ash having a particle size such that at least 90 wt % has a particle size of from 44 μm to 250 μm; (b) optionally, contacting the size classified fly ash from step (a) with water to form a slurry, wherein the slurry has a solid content of less than 40 wt %; (c) subjecting the slurry obtained in step (b) to an exhaustive magnetic separation step to form magnetically treated fly ash, wherein the exhaustive magnetic separation step includes a first magnetic extraction step and a second magnetic extraction step, wherein the second magnetic extraction step is carried out at a higher magnetic field strength than the first magnetic extraction step; and (d) subjecting the magnetically treated fly ash obtained in step (c) to milling to form whitened fly ash.

A male population of mosquito pupae sorted according to a sorting method is described. The sorting method may include adding a mixed population of mosquito pupae into an interior volume of a sieving container including base defining a set of openings enabling movement of mosquito pupae from the interior volume through the set of openings. The mixed population of mosquito pupae may include male mosquito pupae and female mosquito pupae. The method may also include adding a volume of aqueous solution to the interior volume. The method may also include removing a portion of the male pupae from the mixed population of mosquito pupae to by performing a sieving action that causes the portion of the male pupae and a portion of the volume of water to pass from the interior volume through the set of openings. The method may also include capturing the portion of the male pupae as the male population of mosquito pupae after the portion of the male pupae has passed through the set of openings.

Vibratory screening machines that include stacked screening deck assemblies are provided. In some embodiments, at least one of the vibratory screening machines may include an outer frame, an inner frame connected to the outer frame, and a vibratory motor assembly secured to the inner frame for vibrating the inner frame. A plurality of screen deck assemblies may be attached to the inner frame in a stacked arrangement, each configured to receive replaceable screen assemblies. The screen assemblies may be secured to respective ones of the plurality of the screen deck assemblies by tensioning the screen assemblies in a direction that a material to be screened flows across the screen assemblies. An undersized material discharge assembly may be configured to receive materials that pass through the screen assemblies, and an oversized material discharge assembly having a deflector may be configured to receive materials that pass over the screen assemblies.

A filtration system is described that can be used to filter out plant material within a solution. One or more sieves can be disposed in series to receive a flow of solution. As the solution flows through the one or more sieves, progressively smaller particles can be filtered out. One or more transducers can apply sound waves or other agitation during the filtering process. The sound waves help in suspending solid particles in the solution and making for more efficient and quicker filtering.

A method for determining a screen break may include obtaining a fluid stream after a screening system in a drilling process; placing the fluid stream into a screen break detector; obtaining a pressure within a well of the screen break detector when the screening system is in a first state; obtaining a pressure within the well of the screen break detector when the screening system is in a second state; determining a differential pressure within the well of the screen break detector obtained when the screening system is in the second state compared to the pressure when the screen break is in the first state; and transmitting a notification to an operator when the pressure within the screen break detector obtained when the screening system is in the second state is greater than the pressure within the screen break detector when the screening system is in the first state.

Processor apparatus for collecting material adhering to surfaces of packages for processing as waste, the processor apparatus including a cylindrical drum that is rotatable about a longitudinal first axis and that is provided with orifices for forming a screen that retains the packages and that allows the material for collecting to pass through; a motor for driving the cylindrical drum in rotation; and a first brush for brushing an inside surface of the cylindrical drum. The apparatus includes a blower device inside the drum for blowing a gas stream in a direction having a component parallel to the longitudinal first axis.