SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C)

Description

B07B encompasses dry separation and sorting methods for bulk solids, including mechanical sieving, screening, sifting, and air classification techniques. This subclass covers equipment and processes that separate particulate materials, granules, or discrete articles by size, density, or aerodynamic properties without using liquids. Applications range from mineral processing and agricultural commodity handling to recycling and industrial powder classification, excluding wet separation methods and liquid-based sorting systems covered elsewhere in the B07 hierarchy.

10 direct subcodes

Child Classifications

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B07B 1/00 Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
B07B 11/00 Arrangement of accessories in apparatus for separating solids from solids using gas currents
B07B 13/00 Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices (grading eggs A01K43/04)
B07B 15/00 Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material (using wet methods B03B7/00; using gas currents B07B9/00)
B07B 2201/00 Details applicable to machines for screening using sieves or gratings
B07B 2220/00 Type of materials being separated
B07B 2230/00 Specific aspects relating to the whole B07B subclass
B07B 4/00 Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs B03B4/00)
B07B 7/00 Selective separation of solid materials carried by, or dispersed in, gas currents (sieves or filters for separating dispersed particles from gases or vapours B01D)
B07B 9/00 Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets