Experiment and Research on the Separation Process of High Ash and Difficult Floatable Fine Coal

Abstract:

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As for certain high ash and difficult floatable fine coal, the coal quality characteristic is the frangible and easyly-clayed main gangue mineral kaolinite, and the high content of fine-grade and intermediate density grade materials. In order to reduce tiny slimes pollution and to increase quality and recovery rate of concentrate, we used cyclonic-static micro-bubble flotation column and XFD-3 flotation machine to experiment on separation process. It probed into re-concentration after grinding rough refined coal, classified flotation process and selective agglomeration-flotation process these three technical processes. The comparison of flotation machine test result showed that, using the flotation column as separation equipment, process of re-concentration after grinding rough refined coal could obtain the best refined coal accumulation index. When medicaments dosage is kerosene 800 g/t, GF 300 g/t, and sodium hexametaphosphate 1500g/t, refined coal production rate of flotation column is 59.47% and ash content is 10.63%.

Info:

Periodical:

Advanced Materials Research (Volumes 113-116)

Edited by:

Zhenyu Du and X.B Sun

Pages:

1565-1571

DOI:

10.4028/www.scientific.net/AMR.113-116.1565

Citation:

X. H. Gui et al., "Experiment and Research on the Separation Process of High Ash and Difficult Floatable Fine Coal", Advanced Materials Research, Vols. 113-116, pp. 1565-1571, 2010

Online since:

June 2010

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Price:

$35.00

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