Experimental study on bag filtration enhanced by magnetic aggregation of fine particles from hot metal casting process

Zhao, Liang; Li, Xiaoling; Zhu, Yufan; Huang, Jian; Zhang, Ge; Pan, Jianghui; Cai, Jiuju

doi:10.1016/j.powtec.2017.12.083

Cited by 8 publications

(1 citation statement)

References 26 publications

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“…While surface filters could be regenerated by the magnetic excitation of an entire medium, the excitation of the single filter fibers would be more conceivable for depth filters. A few studies that deal with the separation of ferromagnetic particles on magnetic filter materials in the gas phase can be found in the literature [8,9]. The magnetically induced detachment (regeneration of fibers) of non-magnetic particles in gas-particle separation technology has not been investigated yet.…”

Section: Introductionmentioning

confidence: 99%

Particulate Matter Detachment from a Magnetizable Single Fiber Applying Magnetic Forces in Ambient Air

2023

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The potential utilization of magnetic effects in gas particle separation is a current subject of research. This paper demonstrates for the first time that a single magnetizable filter fiber can be deflected by a magnetically induced excitation for a selected combination of parameters, resulting in the removal of deposited particle structures with high detachment levels. A correlation between the magnetic flux density and achieved acceleration to overcome the adhesive forces/strength of the particle structure was determined. The degree of detachment after each regeneration was calculated by comparing the projection area before and after detachment using high-speed images. At a magnetic flux density of B = 38.5 mT, accelerations of maximum a = 105 m·s−2 are achieved, depending on the axial position along the single fiber. The degrees of regeneration achieved at these parameters depend on the amount of fiber loading and on the fiber orientation in the gravitational field. The horizontal orientation of the fiber leads to an increased reattachment of precedingly detached particle structures after deflection compared to a vertical orientation. High particle loading on the fiber results in enhanced detachment by inertia. Under the most favorable process conditions investigated, detachment levels of > 90% are achieved.

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Section: Introductionmentioning

confidence: 99%