Granular Formulations and Active Ingredient Distribution from a Rotary Spreader

    Published: Feb 2011

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    When using a spinner spreader, particle size distribution may affect a gravimetric distribution pattern, larger particles being thrown farther than smaller particles. If active ingredient (AI) concentrations were uneven with respect to particle size, it is possible that a gravimetric distribution analysis (i.e., a spreader calibration) would not accurately reflect AI distribution. This paper discusses granule uniformity and its effect on granular formulation gravimetric distribution and AI distribution. A more uniform particle size provides a more even AI distribution.


    particle size distribution, gravimetric distribution, uniformity, rotary spreader, granule

    Author Information:

    Goss, G. Robert
    Oil-Dri Corporation of America, Chicago, IL

    Bernal, Y.
    Oil-Dri Corporation of America, Chicago, IL

    Johnsonbaugh, A.
    Oil-Dri Corporation of America, Chicago, IL

    Henderson, R.
    Oil-Dri Corporation of America, Chicago, IL

    Paper ID: STP152720120003

    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP152720120003

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