Abstract
Floatability of three kinds of coal, Datong, Ensham and Illinois No. 6, was investigated with various superficial gas velocities and additive concentrations in a small-scale flotation column. The orders of both carbonaceous materials recovery and ash rejection were found to be Datong > Ensham > Illinois No. 6. Distribution of hydrophobicity of coal particles was evaluated by means of the film flotation method. The order of the strength of hydrophobicity determined by the film floatation method was in consistent with that of carbonaceous materials recovery and thereby it was confirmed that this method is useful for evaluating floatability of coal qualitatively. It was found that inorganic sulfur can be rejected by column flotation, indicating that a column floatation process can be applied for simultaneous demineralization and desulphurization of coal. The order of pyrite rejection was Ensham > Datong > Illinois No. 6, being different from that of ash rejection.
| Original language | English |
|---|---|
| Pages (from-to) | 970-979 |
| Number of pages | 10 |
| Journal | Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy |
| Volume | 74 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1995 |
| Externally published | Yes |
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Keywords
- Column floatation
- Demineralization
- Desulphurization
- Film floatation
- Hydrophobicity
ASJC Scopus subject areas
- Energy(all)
Cite this
A Study on Mineral and Sulfur Rejection from Coal Using a Small-Scale Floatation Column. / Matsukata, Masahiko; Fujimoto, Hidekazu; Ueyama, Korekazu.
In: Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy, Vol. 74, No. 11, 1995, p. 970-979.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A Study on Mineral and Sulfur Rejection from Coal Using a Small-Scale Floatation Column
AU - Matsukata, Masahiko
AU - Fujimoto, Hidekazu
AU - Ueyama, Korekazu
PY - 1995
Y1 - 1995
N2 - Floatability of three kinds of coal, Datong, Ensham and Illinois No. 6, was investigated with various superficial gas velocities and additive concentrations in a small-scale flotation column. The orders of both carbonaceous materials recovery and ash rejection were found to be Datong > Ensham > Illinois No. 6. Distribution of hydrophobicity of coal particles was evaluated by means of the film flotation method. The order of the strength of hydrophobicity determined by the film floatation method was in consistent with that of carbonaceous materials recovery and thereby it was confirmed that this method is useful for evaluating floatability of coal qualitatively. It was found that inorganic sulfur can be rejected by column flotation, indicating that a column floatation process can be applied for simultaneous demineralization and desulphurization of coal. The order of pyrite rejection was Ensham > Datong > Illinois No. 6, being different from that of ash rejection.
AB - Floatability of three kinds of coal, Datong, Ensham and Illinois No. 6, was investigated with various superficial gas velocities and additive concentrations in a small-scale flotation column. The orders of both carbonaceous materials recovery and ash rejection were found to be Datong > Ensham > Illinois No. 6. Distribution of hydrophobicity of coal particles was evaluated by means of the film flotation method. The order of the strength of hydrophobicity determined by the film floatation method was in consistent with that of carbonaceous materials recovery and thereby it was confirmed that this method is useful for evaluating floatability of coal qualitatively. It was found that inorganic sulfur can be rejected by column flotation, indicating that a column floatation process can be applied for simultaneous demineralization and desulphurization of coal. The order of pyrite rejection was Ensham > Datong > Illinois No. 6, being different from that of ash rejection.
KW - Column floatation
KW - Demineralization
KW - Desulphurization
KW - Film floatation
KW - Hydrophobicity
UR - http://www.scopus.com/inward/record.url?scp=85024301018&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024301018&partnerID=8YFLogxK
U2 - 10.3775/jie.74.970
DO - 10.3775/jie.74.970
M3 - Article
VL - 74
SP - 970
EP - 979
JO - Nenryo Kyokai-Shi/Journal of the Fuel Society of Japan
JF - Nenryo Kyokai-Shi/Journal of the Fuel Society of Japan
SN - 0916-8753
IS - 11
ER -