Separation Process of Fine Coals by Ultrasonic Vibration Gas-Solid Fluidized Bed
Joint Authors
Wang, Shuai
He, Yaqun
Wei, Hua
Xie, Weining
Source
International Journal of Analytical Chemistry
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-06
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Ultrasonic vibration gas-solid fluidized bed was proposed and introduced to separate fine coals (0.5–0.125 mm fraction).
Several technological methods such as XRF, XRD, XPS, and EPMA were used to study the composition of heavy products to evaluate the separation effect.
Results show that the ultrasonic vibration force field strengthens the particle separation process based on density when the vibration frequency is 35 kHz and the fluidization number is 1.8.
The ash difference between the light and heavy products and the recovery of combustible material obtain the maximum values of 47.30% and 89.59%, respectively.
The sulfur content of the heavy product reaches the maximum value of 6.78%.
Chemical state analysis of sulfur shows that organic sulfur (-C-S-), sulfate-sulfur (-SO4), and pyrite-sulfur (-S2) are confirmed in the original coal and heavy product.
Organic sulfur (-C-S-) is mainly concentrated in the light product, and pyrite-sulfur (-S2) is significantly enriched in the heavy product.
The element composition, phase composition, backscatter imagery, and surface distribution of elements for heavy product show concentration of high-density minerals including pyrite, quartz, and kaolinite.
Some harmful elements such as F, Pb, and As are also concentrated in the heavy product.
American Psychological Association (APA)
Wang, Shuai& He, Yaqun& Wei, Hua& Xie, Weining. 2017. Separation Process of Fine Coals by Ultrasonic Vibration Gas-Solid Fluidized Bed. International Journal of Analytical Chemistry،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1157544
Modern Language Association (MLA)
Wang, Shuai…[et al.]. Separation Process of Fine Coals by Ultrasonic Vibration Gas-Solid Fluidized Bed. International Journal of Analytical Chemistry No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1157544
American Medical Association (AMA)
Wang, Shuai& He, Yaqun& Wei, Hua& Xie, Weining. Separation Process of Fine Coals by Ultrasonic Vibration Gas-Solid Fluidized Bed. International Journal of Analytical Chemistry. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1157544
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157544