|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

SEPARATING; MIXING

|  | B01 - B09 |
Note(s) The following notes are meant to assist in the use of this part of the classification scheme; they must not be read as modifying in any way the elaborations. In this sub-section, the separation of different materials, e.g. of different matter, size, or state, is predominantly found in the following subclasses: Fulltext... Hierarchy... Expanded...B01D Fulltext... Hierarchy... Expanded...B03B, Fulltext... Hierarchy... Expanded...B03C, Fulltext... Hierarchy... Expanded...B03D Fulltext... Hierarchy... Expanded...B04B, Fulltext... Hierarchy... Expanded...B04C, Fulltext... Hierarchy... Expanded...B07B, Fulltext... Hierarchy... Expanded...B07C. The classifying characteristics of these subclasses are: the physical state of the matter to be separated; the principle of the process used; particular kinds of apparatus. The first of these characteristics involves six different aspects, assembled in three groups: liquid/liquid or liquid/gas and gas/gas; solid/liquid or solid/gas; solid/solid. These subclasses are to be used according to the following general rules: Fulltext... Hierarchy... Expanded...B01D is the most general class as far as separation other than solids from solids is concerned. Apparatus for separating solids from solids are covered by Fulltext... Hierarchy... Expanded...B03B when the process concerned is regarded as the equivalent of "washing" in the sense of the mining art, even if such apparatus is a pneumatic one, especially pneumatic tables or jigs. Screens per se are not covered by this subclass but are classified in Fulltext... Hierarchy... Expanded...B07B, even if they are being used in a wet process. All other apparatus for the separation of solids from solids according to dry methods are classified in Fulltext... Hierarchy... Expanded...B07B. If the separation takes place as a result of the detection or measurement of some feature of the material or articles to be sorted it is classified in Fulltext... Hierarchy... Expanded...B07C. It should also be noted that the separation of isotopes of the same chemical element is covered by Fulltext... Hierarchy... Expanded...B01D 59/00, whatever process or apparatus is employed. The following scheme illustrates the classification according to these rules.

|  | B07 |
SEPARATING SOLIDS FROM SOLIDS; SORTING (separation in general Fulltext... Hierarchy... Expanded...B01D; wet separating processes, sorting by processes using fluent material in the same way as liquid Fulltext... Hierarchy... Expanded...B03; using liquids Fulltext... Hierarchy... Expanded...B03B, Fulltext... Hierarchy... Expanded...B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields Fulltext... Hierarchy... Expanded...B03C; centrifuges or vortex apparatus for carrying out physical processes Fulltext... Hierarchy... Expanded...B04; sorting peculiar to particular materials or articles and provided for in other classes, see the relevant classes)

|  | B07B |
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL (combinations of dry separating apparatus with wet separating apparatus Fulltext... Hierarchy... Expanded...B03B; 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 Fulltext... Hierarchy... Expanded...B07C)

|  | B07B |
Note(s) This subclass covers: any sorting or grading of bulk material or loose articles fit to be handled like bulk material which results automatically from the construction of the apparatus and properties of the material, e.g. by a trap opening under an object of a certain minimum weight, by an aperture of graduated size; sorting of articles in so far as the same conditions apply, e.g. sorting of timber by passing it over successively longer openings; the articles may or may not be orientated for the purpose of sorting.

|  | B07B |
Subclass index
SEPARATING SOLIDS FROM SOLIDS USING NETWORKS, GRATINGS, OR GRIDS | 1/00
SEPARATING SOLIDS FROM SOLIDS USING GAS CURRENTS | 4/00, 7/00, 9/00, 11/00
OTHER SEPARATING; COMBINATIONS | 13/00; 15/00

|  | B07B 1/00 |
Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like

|  | B07B 1/02 |
· | Hand screens

|  | B07B 1/04 |
· | Stationary flat screens

|  | B07B 1/06 |
· | Cone or disc shaped screens

|  | B07B 1/08 |
· | Screens rotating within their own plane

|  | B07B 1/10 |
· | Screens in the form of endless moving bands

|  | B07B 1/12 |
· | Apparatus having only parallel elements

|  | B07B 1/14 |
· · | Roller screens

|  | B07B 1/15 |
· · · | using corrugated, grooved or ribbed rollers [2]

|  | B07B 1/16 |
· · | the elements being movable and in other than roller form

|  | B07B 1/18 |
· | Drum screens

|  | B07B 1/20 |
· · | Stationary drums with moving interior agitators

|  | B07B 1/22 |
· · | Revolving drums

|  | B07B 1/24 |
· · · | with fixed or moving interior agitators

|  | B07B 1/26 |
· · · | with additional axial or radial movement of the drum

|  | B07B 1/28 |
· | Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens

|  | B07B 1/30 - B07B 1/38 |
Note(s) Group Fulltext... Hierarchy... Expanded...B07B 1/40 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B07B 1/30-B07B 1/38.

|  | B07B 1/30 |
· · | jigging or moving to-and-fro in or approximately in the direction of conveyance

|  | B07B 1/32 |
· · | jigging or moving to-and-fro within their own plane transverse to the direction of conveyance

|  | B07B 1/34 |
· · | jigging or moving to-and-fro perpendicularly or approximately perpendicularly to the plane of the screen

|  | B07B 1/36 |
· · | jigging or moving to-and-fro in more than one direction

|  | B07B 1/38 |
· · | oscillating in a circular arc in their own plane; Plansifters

|  | B07B 1/40 |
· · | Resonant vibration screens

|  | B07B 1/42 |
· | Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens

|  | B07B 1/44 |
· · | Balancing devices

|  | B07B 1/46 |
· | Constructional details of screens in general; Cleaning or heating of screens

|  | B07B 1/48 |
· · | Stretching devices for screens

|  | B07B 1/49 |
· · · | stretching more than one screen or screen section by the same or different stretching means [2]

|  | B07B 1/50 |
· · | Cleaning

|  | B07B 1/52 |
· · · | with brushes or scrapers

|  | B07B 1/54 |
· · · | with beating devices

|  | B07B 1/55 |
· · · | with fluid jets [3]

|  | B07B 1/56 |
· · | Heated screens

|  | B07B 1/58 |
· · · | heated by heated fluid

|  | B07B 1/60 |
· · · | heated by flame heating

|  | B07B 1/62 |
· · · | heated by direct electric heating

|  | B07B 4/00 - B07B 11/00 |
Separating solids from solids using gas currents

|  | B07B 4/00 |
Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs Fulltext... Hierarchy... Expanded...B03B)

|  | B07B 4/02 |
· | while the mixtures fall

|  | B07B 4/04 |
· · | in cascades

|  | B07B 4/06 |
· · | using revolving drums

|  | B07B 4/08 |
· | while the mixtures are supported by sieves, screens, or like mechanical elements

|  | 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 Fulltext... Hierarchy... Expanded...B01D)

|  | B07B 7/01 |
· | using gravity

|  | B07B 7/02 |
· | by reversal of direction of flow

|  | B07B 7/04 |
· | by impingement against baffle separators

|  | B07B 7/06 |
· | by impingement against sieves

|  | B07B 7/08 |
· | using centrifugal force (centrifuges Fulltext... Hierarchy... Expanded...B04B; cyclones Fulltext... Hierarchy... Expanded...B04C)

|  | B07B 7/083 |
· · | generated by rotating vanes, discs, drums, or brushes

|  | B07B 7/086 |
· · | generated by the winding course of the gas stream

|  | B07B 7/10 |
· · | having air recirculating within the apparatus

|  | B07B 7/12 |
· | with pulsating air currents

|  | 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

|  | B07B 9/02 |
· | Combinations of similar or different apparatus for separating solids from solids using gas currents

|  | B07B 11/00 |
Arrangement of accessories in apparatus for separating solids from solids using gas currents

|  | B07B 11/02 |
· | Arrangement of air or material conditioning accessories

|  | B07B 11/04 |
· | Control arrangements

|  | B07B 11/06 |
· | Feeding or discharging arrangements

|  | B07B 11/08 |
· | Cleaning arrangements

|  | B07B 13/00 - B07B 15/00 |
Other separating, e.g. grading, resulting automatically from the construction of the apparatus used and properties of the material concerned; Combinations

|  | 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 Fulltext... Hierarchy... Expanded...A01K 43/04)

|  | B07B 13/02 |
· | Apparatus for grading using pockets for taking out particles from aggregates

|  | B07B 13/04 |
· | according to size

|  | B07B 13/05 |
· · | using material mover cooperating with retainer, deflector or discharger (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B07B 13/065-B07B 13/075 take precedence) [3]

|  | B07B 13/065 |
· · | Apparatus for grading or sorting using divergent conveyer belts or cables [3]

|  | B07B 13/07 |
· · | Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement [3]

|  | B07B 13/075 |
· · | Apparatus comprising moving article-receiving openings, the size of which varies as they move [3]

|  | B07B 13/08 |
· | according to weight (Fulltext... Hierarchy... Expanded...B07B 13/10 takes precedence)

|  | B07B 13/10 |
· | using momentum effects

|  | B07B 13/11 |
· · | involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters [2]

|  | B07B 13/14 |
· | Details or accessories

|  | B07B 13/16 |
· · | Feed or discharge arrangements

|  | B07B 13/18 |
· · | Control

|  | 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 gas currents Fulltext... Hierarchy... Expanded...B07B 9/00; using wet methods Fulltext... Hierarchy... Expanded...B03B 7/00)