Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite
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 fro...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2018-08-01
|
| Series: | Carbon Resources Conversion |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2588913318300164 |
| _version_ | 1831527214349287424 |
|---|---|
| author | Atul Sharma Naoto Sakimoto Toshimasa Takanohashi |
| author_facet | Atul Sharma Naoto Sakimoto Toshimasa Takanohashi |
| author_sort | Atul Sharma |
| collection | DOAJ |
| description | 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 |
| first_indexed | 2024-12-16T16:25:41Z |
| format | Article |
| id | doaj.art-2e26133821694821a8b15cd0e706eebc |
| institution | Directory Open Access Journal |
| issn | 2588-9133 |
| language | English |
| last_indexed | 2024-12-16T16:25:41Z |
| publishDate | 2018-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Carbon Resources Conversion |
| spelling | doaj.art-2e26133821694821a8b15cd0e706eebc2022-12-21T22:24:45ZengKeAi Communications Co., Ltd.Carbon Resources Conversion2588-91332018-08-0112139146Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder compositeAtul Sharma0Naoto Sakimoto1Toshimasa Takanohashi2Research Institute of Energy Frontier, Non-conventional Carbon Resources Group, National Institute of Advanced Industrial Science & Technology, 16-1, Onogawa, Tsukuba, Japan; Corresponding author.Japan Coal Energy Center, 3-2-1 Nishi-shinbashi, Minato-ku, Tokyo, JapanResearch Institute of Energy Frontier, Non-conventional Carbon Resources Group, National Institute of Advanced Industrial Science & Technology, 16-1, Onogawa, Tsukuba, JapanProduction 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, Binderhttp://www.sciencedirect.com/science/article/pii/S2588913318300164 |
| spellingShingle | Atul Sharma Naoto Sakimoto Toshimasa Takanohashi Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite Carbon Resources Conversion |
| title | Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite |
| title_full | Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite |
| title_fullStr | Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite |
| title_full_unstemmed | Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite |
| title_short | Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite |
| title_sort | effect of binder amount on the development of coal binder interface and its relationship with the strength of the carbonized coal binder composite |
| url | http://www.sciencedirect.com/science/article/pii/S2588913318300164 |
| work_keys_str_mv | AT atulsharma effectofbinderamountonthedevelopmentofcoalbinderinterfaceanditsrelationshipwiththestrengthofthecarbonizedcoalbindercomposite AT naotosakimoto effectofbinderamountonthedevelopmentofcoalbinderinterfaceanditsrelationshipwiththestrengthofthecarbonizedcoalbindercomposite AT toshimasatakanohashi effectofbinderamountonthedevelopmentofcoalbinderinterfaceanditsrelationshipwiththestrengthofthecarbonizedcoalbindercomposite |