DIN 66142-1:1981-07

1 Scope and field of application
2 Other standards to be observed
3 Terms and definitions
4 Characterizing separocesses
      4.1 Quantity balance
      4.2 Ideal twofold separation
      4.3 Real twofold separation
             4.3.1 Determination of yields
             4.3.2 Parameters for the products
             4.3.3 Parameters for the cut point
             4.3.4 Grade efficiency, grade efficiency curve
             4.3.5 Parameters for sharpness of cut
      4.4 Real threefold separation
             4.4.1 Quantity balance
             4.4.2 Parameters for the products
             4.4.3 Parameters for the cut points
             4.4.4 Grade efficiency, grade efficiency curve
             4.4.5 Parameters for sharpness of cut
5 Symbols
Literature
Other relevant standards

Specifies methods of representing and characterizing the separation of disperse materials, irrespective of the nature of the characteristic used to classify the particles (hereinafter briefly referred to as "particle characteristic"). Various types of particle characteristic may be used, for example: in classifying processes a fineness characteristic may be used, such as the geometrical dimensions of the particles, the settling velocity (see DIN 66141); in sorting processes a property specific to the material in question, such as density, may be used.