Autor: |
Atul Sharma, Naoto Sakimoto, Toshimasa Takanohashi |
Jazyk: |
angličtina |
Rok vydání: |
2018 |
Předmět: |
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Zdroj: |
Carbon Resources Conversion, Vol 1, Iss 2, Pp 139-146 (2018) |
Druh dokumentu: |
article |
ISSN: |
2588-9133 |
DOI: |
10.1016/j.crcon.2018.05.002 |
Popis: |
Production of high-strength carbonized coal composites from non-caking coals only with possible application as coke is presented. A binder and a non-caking coal were mixed in different ratios and carbonized at 1000 °C to produce coal-binder composites. Two binders, one from coal origin and other from oil origin were used. Effect of coal-binder mixing ratio and base coal particle size on the fracture strength of composites was investigated. Bonding of binder with the coal particles at coal-binder interface and development of connected carbon matrix were primarily responsible for the strength of the carbonized coal composites. The trend of change in fracture strength as a function of coal-binder fraction was similar for both the binders. However, for same coal-binder mixing ratio, binder type strongly affected the maximum strength achieved. Fracture strength was found to be primarily dependent on the coal-binder mixing ratio and base coal particle size. The main finding of this study is that the irrespective of binder type, for a given base coal particle size there was only one coal-binder mixing ratio at which the maximum strength was obtained. The binder fraction at which the highest strength observed was correlated to the carbon matrix connectivity index. Keywords: Carbonized coal composite, Cokes, Non-caking coals, Binder |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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