Process characteristics of heterogeneous fine mud in the coal flotation
Abstract：Processing objects is a kind of hard-to-float and high-ash fine coal which collected in Kailuan mining. Flota tion rate experiment was designed for investigating the process characteristics of fine coal. Size analysis and density analysis of five cleans and fine-grained of the flotation rate experiment were studied. The mineral morphology of flota- tion rate experiment cleans was observed by scanning electron microscopy（SEM）. The results show that fine mud con- tamination exists throughout the flotation process. The fine mud content in J1, J2, J3, J4 and J5 is similar, but gradually increases in its product. With the conduct of flotation ,the flotation rate of high-ash fine mud（ ash content〉 50% ） re- duces, and the operation recovery of fine mud per unit time also reduce. Flotation rate and cumulative yield of hetero- geneity fine mud increase with its size and density reducing. The way of high-ash fine mud into clean coal products is mechanical entrainment and covering the surface of coarse-grained coal by SEM and Stokes number（St） analysis.
Keywords：fine mudfloationprocess characteristicclaymineral morphology
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 301-309 )