Fluidization in combined acoustic-magnetic field for mixtures of ultrafine particles_中国颗粒学会

Fluidization in combined acoustic-magnetic field for mixtures of ultrafine particles_中国颗粒学会

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Partic. vol. 5 no. 1-2 pp. 111-115 (April 2007)
doi: 10.1016/j.cpart.2007.01.007

Fluidization in combined acoustic-magnetic field for mixtures of ultrafine particles

Huie Liu, Qingjie Guo^*

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qjguo@mail.hdpu.edu.cn

Abstract

Four kinds of SiO₂ (5–10 nm) + Fe₃O₄ (44.8 μm) particle were fluidized in a sole acoustic field, a sole magnetic field and a combined acoustic-magnetic field. Introduction of a single field, 100 dB/40–60 Hz acoustic or 10 mT magnetic, could suppress plugging and channeling and reduce the superficial minimum fluidization gas velocities, U_mf. Combination of both acoustic and magnetic fields demonstrated even more promising results, especially more significant reduction of U_mf.

Keywords

Ultrafine particle; Combined acoustic-magnetic field; Acoustic field; Magnetic field