Bubble Performance of Air Dense Medium Fluidized Bed and Its Effects on Coal Preparation
XU Shou-kun
GUAN Yu-ping
CHEN Qing-ru
Abstract：The importance and characteristic of bubbles in an air dense medium fluidized bed(ADMFB)was introduced. The formula expressed by volume fraction of bubbles for the density of ADMFB was derived. The influence of bubbles on the lower size limit of 6mm was analyzed. Meanwhile, the influence of the reversed mixing of medium and the penetration of particles through bubbles on the misplaced product was also described. Finally, a case example of separating coal with different sizes was given. The result shows that the bubble is an important factor influencing coal separation, and the variation of its volume fraction is closely related to the variation of density of ADMFB.
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Publication Date：2001-05-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 268-271 )