The embodiments herein provide a centrifugal scattering device having a central axle, a sieve positioned below the central axle, a plurality of rotors, each one having a proximal end and distal end where the proximal end of each rotor is attached to the central axle. The device also preferably includes a guide, angled relative to the central axle and attached to the distal end of each rotor so that the guide travels around the central axle and along the sieve when the central axle rotates.

The embodiments herein provide a method for separating fine fractures from coarse fractures, comprising the steps of generating an area of low air pressure beneath a sieve positioned within a centrifugal scattering device followed by ingesting a mixture of air, coarse fractures, and fine fractures into the centrifugal scattering device. The method would preferably continue by causing a guide to rotate around an interior cavity of the centrifugal scattering device while forcing fine fractures through the sieve using the low air pressure and gravity, into a fine fracture collector. Preferably coarse fractures are permitted to travel along the sieve, guided by the guides, to a coarse fracture collector which is separate from the fine fracture collector.

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

A method of cleaning drilling fluid tanks is provided. The method includes washing drilling fluid within a first tank with fuel oil thereby forming a first admixture of drilling fluid and fuel oil. The method further includes reclaiming the first admixture and washing drilling fluid within a second tank with the reclaimed first admixture. The method further includes reclaiming a second admixture formed by the first admixture and the drilling fluid from the second tank. The method further includes washing drilling fluid within a third tank with the reclaimed second admixture.

A stone sieve assembly includes a cutting blade, a back plate, and a plurality of bars. The plurality of bars are spaced apart from one another and extend between the cutting blade and the back plate. The plurality of bars have a leading section positioned proximate the cutting blade and a trailing section positioned proximate the back plate. The trailing section tapers inwardly as it approaches the back plate.

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be an injection molded thermoplastic polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across an exterior portion of the grid frame.

Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines.

A rotating clamp assembly and related methods of use for coupling one or more filter screens to a trommel frame. The rotating clamp assembly includes a pair of roller members that rotate relative to the trommel frame. The rotating clamp assembly can be coupled to the trommel frame by attaching a pair of clamp support members to an axial frame member. Each of the clamp support members and the roller members can comprise a central bore for slidably receiving a roller axle such that the roller members are rotatable relative to the clamp support members and the axial frame. Each roller member can rotatably interact with the axial frame member or alternatively, to the corresponding clamp support member to retain the filter screen. Each roller member can include a fastener that can be tightened to retain filter screen to the axial frame member.

Embodiments of the present disclosure include a screen basket apparatus includes a substantially vertical cylindrical frame and a synthetic screening surface secured to the frame. The synthetic screening surface may be configured to separate carbon or resin from a slurry of a carbon-in-leach, carbon-in-pulp, resin-in-leach, or resin-in-pulp material as fluid flows from outside to inside the screen basket apparatus such that carbon or resin is retained on an external surface of the synthetic screening surface. The cylindrical frame may be a grid frame and the synthetic screening surface may include a plurality of replaceable screen assemblies attached to the grid frame. The grid frame may include a plurality of openings and each of the plurality of openings is configured to receive a respective one of the plurality of replaceable screen assemblies. The synthetic screening surface may include injected molded thermoplastics, thermoset polyurethanes, and/or other polymeric materials.