Method and apparatuses for screening

A screen basket apparatus, comprising:

• a substantially vertical cylindrical grid frame having a plurality of openings, the grid frame including a plurality of transversal members and a plurality of longitudinal members that define the plurality of openings;
• a first screening cartridge assembly including a first case and a first screen assembly secured within the case, wherein the first screen assembly includes a synthetic surface located on the outside of the grid frame, the first synthetic surface including openings having sizes in a range from approximately 35 microns to approximately 4000 microns;
• a second screening cartridge assembly including a case and a second screen assembly secured within the case, wherein the second screen assembly includes a synthetic surface located on the outside of the grid frame, the second synthetic surface including openings having sizes in a range from approximately 35 microns to approximately 4000 microns;
• and
• a third screening cartridge assembly including a case and a third screen assembly secured within the case, wherein the third screen assembly includes a synthetic surface located on the outside of the grid frame, the third synthetic surface including openings having sizes in a range from approximately 35 microns to approximately 4000 microns,
• wherein the first screening cartridge assembly is secured to at least one of (a) a first transversal member and a second transversal member of the plurality of transversal members and (b) a first longitudinal member and a second longitudinal member of the plurality of longitudinal members such that the first screening cartridge assembly covers a first opening of the plurality of openings of the grid frame,
• wherein the second screening cartridge assembly is secured to at least one of (a) a third transversal member and a fourth transversal member of the plurality of transversal members and (b) a third longitudinal member and a fourth longitudinal member of the plurality of longitudinal members such that the second screening cartridge assembly covers a second opening of the plurality of openings of the grid frame,
• wherein the third screening cartridge assembly is secured to at least one of (a) a fifth transversal member and a sixth transversal member of the plurality of transversal members and (b) a fifth longitudinal member and a sixth longitudinal member of the plurality of longitudinal members such that the third screening cartridge assembly covers a third opening of the plurality of openings of the grid frame, and
• wherein the first, second and third screen assemblies are configured to separate carbon or resin from a slurry of a carbon-in-leach (CIL), carbon-in-pulp (CIP) or resin-in-leach (RIL) material as fluid of the slurry flows from outside the screen basket apparatus to inside the screen basket apparatus, due to a static pressure differential between fluid outside relative to fluid inside the screen basket apparatus, such that carbon or resin is retained on external surfaces of the first, second and third synthetic surfaces.