skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Flotation of fine coal with different volatility in China

Abstract

This paper contains three parts. The first part interprets the surface hydrophobicity and theoretical floatability of different rank coals from the organic molecular component point of view. The theoretical floatability between bituminous and anthracite is solved by the molecular theory. The second part describes a study of the interactive energy between hydrocarbon oil and coal particle using DLVO theory showing that the controlling factor in determining the repulsive energy barrier preventing oil from wetting and spreading on the coal surface is the same sign charge and Zeta potential. Some surfactants to promote the interaction of hydrocarbon oil and coal surface were investigated. The batch tests show a new flotation promoter having a higher efficiency and performance. A discussion is centered on the relationship between the floatabilities of coals with different volatile matter and the character of the new reagent. A molecular theory for the explanation of the interaction mechanism of the flotation reagent on coal surface was summarized. A survey of four coal preparation plants (Xiqu, Malan, Taiyuan and Tianzhuang) in Shanxi and Henan provinces was introduced. The flotation performance of coal with different volatility using commercial flotation cells in the above mentioned plants was tested.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:
324629
Report Number(s):
CONF-970931-
TRN: IM9911%%326
Resource Type:
Conference
Resource Relation:
Conference: 14. annual international Pittsburgh coal conference and workshop: clean coal technology and coal utilization, Taiyuan (China), 23-27 Sep 1997; Other Information: PBD: 1997; Related Information: Is Part Of Fourteenth annual international Pittsburgh coal conference and workshop: Proceedings; PB: [1500] p.
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; BITUMINOUS COAL; ANTHRACITE; COAL PREPARATION; PERFORMANCE; MOLECULAR MODELS; WETTABILITY; FLOTATION; OILS; SURFACTANTS

Citation Formats

Guo, M X, Hui, W D, An, Z, Ren, Z M, Wang, Q F, Dai, Z, Xiao, Z Q, Cui, Y B, and Zhang, X J. Flotation of fine coal with different volatility in China. United States: N. p., 1997. Web.
Guo, M X, Hui, W D, An, Z, Ren, Z M, Wang, Q F, Dai, Z, Xiao, Z Q, Cui, Y B, & Zhang, X J. Flotation of fine coal with different volatility in China. United States.
Guo, M X, Hui, W D, An, Z, Ren, Z M, Wang, Q F, Dai, Z, Xiao, Z Q, Cui, Y B, and Zhang, X J. 1997. "Flotation of fine coal with different volatility in China". United States.
@article{osti_324629,
title = {Flotation of fine coal with different volatility in China},
author = {Guo, M X and Hui, W D and An, Z and Ren, Z M and Wang, Q F and Dai, Z and Xiao, Z Q and Cui, Y B and Zhang, X J},
abstractNote = {This paper contains three parts. The first part interprets the surface hydrophobicity and theoretical floatability of different rank coals from the organic molecular component point of view. The theoretical floatability between bituminous and anthracite is solved by the molecular theory. The second part describes a study of the interactive energy between hydrocarbon oil and coal particle using DLVO theory showing that the controlling factor in determining the repulsive energy barrier preventing oil from wetting and spreading on the coal surface is the same sign charge and Zeta potential. Some surfactants to promote the interaction of hydrocarbon oil and coal surface were investigated. The batch tests show a new flotation promoter having a higher efficiency and performance. A discussion is centered on the relationship between the floatabilities of coals with different volatile matter and the character of the new reagent. A molecular theory for the explanation of the interaction mechanism of the flotation reagent on coal surface was summarized. A survey of four coal preparation plants (Xiqu, Malan, Taiyuan and Tianzhuang) in Shanxi and Henan provinces was introduced. The flotation performance of coal with different volatility using commercial flotation cells in the above mentioned plants was tested.},
doi = {},
url = {https://www.osti.gov/biblio/324629}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 1997},
month = {Wed Dec 31 00:00:00 EST 1997}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: