Abstract
Foam is an effective material for controlling industrial dust. To optimize and upgrade the performance of dust-suppression foam, this paper proposes a method of exposing the foaming agent solution to a magnetic field of specific intensity prior to foaming. The effects of magnetization on foaming capacity, foam stability and foam size were investigated. Two types of foaming agent, anionic and non-ionic, were selected to test the foam expansion (FE) and foaming time (FT), both reflecting the foaming capacity, and foam stability (FS) at different concentrations before and after magnetization. The size of the bubbles, which directly affects the dust suppression performance, was also examined. The experimental results indicated that the foaming capacity and foam stability of the foaming agent solution after magnetization were higher than that of the original solution, and the size distribution of the bubbles has a trend to concentrate towards smaller size ranges. It proves that magnetization can enhance the performance of dust-suppression foam and reduce the quantity of foaming agent. Then we explored the mechanism of the observed experimental phenomena. This study is of significant importance in promoting foam as a more efficient material in dust control.
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