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.

  1. In this sub-section, the separation of different materials, e.g. of different matter, size, or state, is predominantly found in the following subclasses:

    B01D

    B03B, B03C, B03D

    B04B, B04C

    B07B, B07C.

  2. The classifying characteristics of these subclasses are:
    1. the physical state of the matter to be separated;
    2. the principle of the process used;
    3. particular kinds of apparatus.
    The first of these characteristics involves six different aspects, assembled in three groups:
    1. liquid/liquid or liquid/gas and gas/gas;
    2. solid/liquid or solid/gas;
    3. solid/solid.
  3. These subclasses are to be used according to the following general rules:
    It should also be noted that the separation of isotopes of the same chemical element is covered by B01D 59/00, whatever process or apparatus is employed.
  4. The following scheme illustrates the classification according to these rules.

        TABLE A

        LIQUID/LIQUID

        LIQUID/GAS

        GAS/GAS

                                            Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B01D      B01D

       by centrifugal force, using centrifuges or

       free-vortex apparatus                    B01D      B04B,

                                                            B04C

       using magnetic or electrostatic effect   B03C      B03C 

        TABLE B

        SOLID/LIQUID

        SOLID/GAS

                                            Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B01D      B01D 

       by centrifugal force                     B01D      B01D 

       using centrifuges or free-vortex

         apparatus                              B01D      B04B,

                                                            B04C

       using magnetic or electrostatic effect   B03C      B03C

        TABLE C

        SOLID/SOLID

     Dry methods

                                             Subclasses dealing with

     Operations                                 Method    Apparatus

     General

     material in bulk                           B07B      B07B 

     Individual sorting                         B07C      B07C 

       Screening, sifting, pneumatic sorting    B07B      B07B 

         using pneumatic tables or jigs         B03B      B03B 

       by magnetic or electrostatic effect      B03C      B03C 

       by centrifugal force                     B07B      B07B 

         using centrifuges or free-vortex

         apparatus                              B07B      B04B,

                                                            B04C

     Wet methods

                                             Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B03B      B03B 

       flotation, differential sedimentation    B03D      B03D 

       screening                                B07B      B07B

     Combinations Dry methods - wet methods     B03B 

 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 B01D 59/00; crushing or disintegrating B02C; centrifuges or vortex apparatus for carrying out physical processes B04)  [5]
 B03D
FLOTATION; DIFFERENTIAL SEDIMENTATION (sedimentation in general B01D 21/00; in combination with other separation of solids B03B; sink-float separation B03B 5/28; detergents, soaps C11D)
 B03D 1/00
Flotation (conditioning for flotation, general arrangement of plant B03B)
 B03D 1/00

Note(s)

  1. In groups B03D 1/001-B03D 1/018, in the absence of an indication to the contrary, classification is made in the last appropriate place.  [5]
  2. In groups B03D 1/001-B03D 1/018, it is desirable to add the appropriate indexing code(s) from each of groups B03D 101/00 and B03D 103/00. The indexing codes should be unlinked.  [5]
 B03D 1/001
·  Flotation agents (conditioners B03B 1/00)  [5]
 B03D 1/002
·  ·  Inorganic compounds  [5]
 B03D 1/004
·  ·  Organic compounds  [5]
 B03D 1/006
·  ·  ·  Hydrocarbons  [5]
 B03D 1/008
·  ·  ·  containing oxygen  [5]
 B03D 1/01
·  ·  ·  containing nitrogen  [5]
 B03D 1/012
·  ·  ·  containing sulfur  [5]
 B03D 1/014
·  ·  ·  containing phosphorus  [5]
 B03D 1/016
·  ·  ·  Macromolecular compounds  [5]
 B03D 1/018
·  ·  Mixtures of inorganic and organic compounds  [5]
 B03D 1/02
·  Froth-flotation processes
 B03D 1/04
·  ·  by varying ambient atmospheric pressure
 B03D 1/06
·  ·  differential
 B03D 1/08
·  Subsequent treatment of concentrated product (froth dispersion B01D 19/02)
 B03D 1/10
·  ·  Removing adhering liquid from separated materials (processes or devices capable of general use B01D)
 B03D 1/12
·  Agent recovery
 B03D 1/14
·  Flotation machines (devices for feeding measured quantities of reagents B01J 4/02; flotation apparatus for enzymology or microbiology C12M 1/09)
 B03D 1/16
·  ·  with impellers; Subaeration machines
 B03D 1/18
·  ·  ·  without air supply
 B03D 1/20
·  ·  ·  with internal air pumps
 B03D 1/22
·  ·  ·  with external blowers
 B03D 1/24
·  ·  pneumatic
 B03D 1/26
·  ·  ·  Air lift machines
 B03D 3/00
Differential sedimentation
 B03D 3/02
·  Coagulation
 B03D 3/04
·  ·  assisted by vibrations
 B03D 3/06
·  Flocculation
 B03D 101/00 - 
B03D 103/00
Indexing scheme associated with groups B03D 1/001-B03D 1/018, relating to the effects produced and the materials treated. The indexing codes should be unlinked.  [5]
 B03D 101/00 - 
B03D 103/00

Note(s)

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code.  [6]

 B03D 101/00
Specified effects produced by the flotation agents  [5]
 B03D 101/02
·  Collectors  [5]
 B03D 101/04
·  Frothers  [5]
 B03D 101/06
·  Depressants  [5]
 B03D 103/00
Specified materials treated by the flotation agents  [5]
 B03D 103/02
·  Ores  [5]
 B03D 103/04
·  ·  Non-sulfide ores  [5]
 B03D 103/06
·  ·  ·  Phosphate ores  [5]
 B03D 103/08
·  ·  ·  Coal ores  [5]
 B03D 103/10
·  ·  ·  Potassium ores  [5]