The experiments show that the dust can not be re-entrainment easily when the greater current density.The charging bar is benefit to control the re-entrainment of the precipitated particles.

• 实验表明，当流过粉尘电流密度较大时，粉尘颗粒所受黏结力较大而不易返混，使用芒刺作为放电极有助于遏制粉尘颗粒返混。