|  | 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.

|  | B03 |
SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes Fulltext... Hierarchy... Expanded...B01D 59/00; crushing or disintegrating Fulltext... Hierarchy... Expanded...B02C; centrifuges or vortex apparatus for carrying out physical processes Fulltext... Hierarchy... Expanded...B04) [5]

|  | B03B |
SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS (removing fluids from solids Fulltext... Hierarchy... Expanded...B01D; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields Fulltext... Hierarchy... Expanded...B03C; flotation, differential sedimentation Fulltext... Hierarchy... Expanded...B03D; separating by dry methods Fulltext... Hierarchy... Expanded...B07; screening or sifting Fulltext... Hierarchy... Expanded...B07B; by picking Fulltext... Hierarchy... Expanded...B07C; separating peculiar to particular materials and provided for in other single classes, see the relevant classes)

|  | B03C |
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (conditioning gases for such separation, separating isotopes Fulltext... Hierarchy... Expanded...B01D; filters making use of electricity or magnetism Fulltext... Hierarchy... Expanded...B01D 35/06; conditioning solids for such separation Fulltext... Hierarchy... Expanded...B03B; combinations of magnetic or electrostatic separation with separation of solids by other means Fulltext... Hierarchy... Expanded...B03B, Fulltext... Hierarchy... Expanded...B07B; separating sheets from piles Fulltext... Hierarchy... Expanded...B65H 3/00; magnets or magnet coils per se Fulltext... Hierarchy... Expanded...H01F) [5]

|  | B03D |
FLOTATION; DIFFERENTIAL SEDIMENTATION (sedimentation in general Fulltext... Hierarchy... Expanded...B01D 21/00; in combination with other separation of solids Fulltext... Hierarchy... Expanded...B03B; sink-float separation Fulltext... Hierarchy... Expanded...B03B 5/28; detergents, soaps Fulltext... Hierarchy... Expanded...C11D)