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    STP140

    Metal Powder Size Distribution with the Roller Air Analyzer

    Published: 01 January 1953


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    Abstract

    Some constructional modifications of the analyzer are described. The apparent size of irregular-shaped particles is quantitatively related to the diameter of sphere separated at the same air velocity. The velocity distribution of the air stream is shown to be linear over a wide range, and the significance is discussed. The size character of the residual particles after a separation is evaluated. Theoretical equations of a size separation are derived and applied to actual separations with several examples.


    Author Information:

    Roller, P. S.
    Chemist, Washington, D. C.


    Committee/Subcommittee: B09.02

    DOI: 10.1520/STP44040S