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Screening

Screen Efficiency and Capacity Analysis

Screening is used to separate particles of different sizes. It involves passing a mixture of particles over a surface with openings of a desired size. There are different types of screening …

DRY S REENING

refers to the treatment of a material containing a natural amount of moisture or a material that has been dried before screening.

WET S REENING

refers to an operation when water is added to the material being treated for the purpose of washing the fine material through the screen.

means of preparing a product for sale or for subsequent operation [as in marketing of coal where the size is the basis for its classification for sale]

means of analysis, either to control or gage the effectiveness of another operation such as crushing or grinding. [to control the rates of reactions involving solids as in]

to determine the value of a product for some specific application

Screens

are used for control and analytical work. They are constructed of wire mesh cloth, the diameters of the wire and the spacing of the wires are specified.

Screen Aperture

clear space between the individual wires of the screen

Mesh

number of apertures per linear inch. Example: A 10-mesh screen will have 10 openings per inch and the aperture will be 0.1 inch minus the diameter of the wire.

Screen interval

relationship between the successive sizes of screen openings in a series.