STP946

    Test Approach for Dense Slurry Erosion

    Published: Jan 1987


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    Abstract

    The paper presents two test devices to simulate erosion wear by friction and by impact in dense slurry flow. The empirical coefficients determined experimentally are introduced in a predictive model, which numerically simulates the wear by directional impact of solid particles, random impact, and coulombic friction. The last two components are specific for high concentrated slurries (C ≳ 5 to 10% by volume).

    The device for erosion by friction has a moving frame with a fast oscillating motion in a horizontal plane. The layer of abrasive particles slides on the bottom side, where the exposed specimens are located. Tests performed with alumina and sand particles are discussed.

    The directional and random impacts are both simulated on an inclined wall, which divides into two parts a confined jet of suspension. The experimental results are illustrated for four worn materials under the impingement of a sand-water slurry stream.

    The equivalence between the energy dissipated by particles-wall interactions and erosion intensity gives a unified way to determine all erosion components. The suggested test devices provide the coefficients of proportionality. The approach can be used for the dense slurry flows usually encountered in industrial applications, for various flow regimes and wall geometries.

    Keywords:

    erosion wear, slurry flow, wear by friction, particle impingement, equipment handling slurries, erosion test apparatus, energy approach


    Author Information:

    Roco, MC
    Professor and research assistant, University of Kentucky, Lexington, KY

    Nair, P
    Professor and research assistant, University of Kentucky, Lexington, KY

    Addie, GR
    Professional engineer, Georgia Iron Works Industries, Inc., Grovetown, GA


    Paper ID: STP19428S

    Committee/Subcommittee: G02.30

    DOI: 10.1520/STP19428S


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