Abstract
Single carbonizations and co-carbonizations of 17 low-rank bituminous and subbituminous coals have been studied to evaluate their suitability as sources of blast furnace coke in terms of pore-wall profile and anisotropic development within the cokes. Co-carbonizations suggest the possible use of low-rank coals which from single carbonizations would not have been considered suitable. To evaluate semi-quantitatively the coke quality, two structural characteristics of the cokes produced by single and co-carbonizations are graded on a scale of 1 to 5. Overall assessments for each coal are plotted against the atomic H/C and 0/C ratios of the original coals. Although there are a few exceptions, coals with similar assessments are located in the same region of the plot, indicating that, to a first approximation, the H/C and 0/C ratios are suitable indicators of the single and co-carbonization properties of a coal. The presence of cations in the coal appears to be an additional factor influencing the carbonization properties and may explain the exceptional behaviour of some coals. Removal of these cations by pretreatment of the coals improves the carbonization properties.
| Original language | English |
|---|---|
| Pages (from-to) | 649-658 |
| Number of pages | 10 |
| Journal | Fuel |
| Volume | 62 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jan 1 1983 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
- Organic Chemistry
Cite this
Carbonization of coals to produce anisotropic cokes. 3. Evaluation of low-rank bituminous and subbituminous coals by single and co-carbonizations with pitch. / Korai, Yozo; Yoshida, Yuichi; Takeshita, Kenjiro; Mochida, Isao.
In: Fuel, Vol. 62, No. 6, 01.01.1983, p. 649-658.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbonization of coals to produce anisotropic cokes. 3. Evaluation of low-rank bituminous and subbituminous coals by single and co-carbonizations with pitch
AU - Korai, Yozo
AU - Yoshida, Yuichi
AU - Takeshita, Kenjiro
AU - Mochida, Isao
PY - 1983/1/1
Y1 - 1983/1/1
N2 - Single carbonizations and co-carbonizations of 17 low-rank bituminous and subbituminous coals have been studied to evaluate their suitability as sources of blast furnace coke in terms of pore-wall profile and anisotropic development within the cokes. Co-carbonizations suggest the possible use of low-rank coals which from single carbonizations would not have been considered suitable. To evaluate semi-quantitatively the coke quality, two structural characteristics of the cokes produced by single and co-carbonizations are graded on a scale of 1 to 5. Overall assessments for each coal are plotted against the atomic H/C and 0/C ratios of the original coals. Although there are a few exceptions, coals with similar assessments are located in the same region of the plot, indicating that, to a first approximation, the H/C and 0/C ratios are suitable indicators of the single and co-carbonization properties of a coal. The presence of cations in the coal appears to be an additional factor influencing the carbonization properties and may explain the exceptional behaviour of some coals. Removal of these cations by pretreatment of the coals improves the carbonization properties.
AB - Single carbonizations and co-carbonizations of 17 low-rank bituminous and subbituminous coals have been studied to evaluate their suitability as sources of blast furnace coke in terms of pore-wall profile and anisotropic development within the cokes. Co-carbonizations suggest the possible use of low-rank coals which from single carbonizations would not have been considered suitable. To evaluate semi-quantitatively the coke quality, two structural characteristics of the cokes produced by single and co-carbonizations are graded on a scale of 1 to 5. Overall assessments for each coal are plotted against the atomic H/C and 0/C ratios of the original coals. Although there are a few exceptions, coals with similar assessments are located in the same region of the plot, indicating that, to a first approximation, the H/C and 0/C ratios are suitable indicators of the single and co-carbonization properties of a coal. The presence of cations in the coal appears to be an additional factor influencing the carbonization properties and may explain the exceptional behaviour of some coals. Removal of these cations by pretreatment of the coals improves the carbonization properties.
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U2 - 10.1016/0016-2361(83)90303-4
DO - 10.1016/0016-2361(83)90303-4
M3 - Article
VL - 62
SP - 649
EP - 658
JO - Fuel
JF - Fuel
SN - 0016-2361
IS - 6
ER -