- Title
- Impact of large sized inertinite particles on thermo-swelling and volatile release of coking coals
- Creator
- Xie, Wei; Stanger, Rohan; Tran, Quang Anh; Mahoney, Merrick; Lucas, John; Yu, Jianglong; Wall, Terry
- Relation
- Fuel Processing Technology Vol. 193, Issue October 20192019, p. 63-72
- Publisher Link
- http://dx.doi.org/10.1016/j.fuproc.2019.05.005
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2019
- Description
- A reflux classifier system was employed to concentrate large sized inertinite-rich particles (1.6-2.0 mm) from two different ranked coking coals A and B. The impact of these concentrates on swelling, permeability and volatile evolution rates of another two coking coals C and D was investigated using the Computer Aided Thermal Analysis (CATA) and Dynamic Elemental Thermal Analysis (DETA) techniques. The results indicated that the concentrated inertinite-rich particles contained inertinite up to 75% for both coals A and B. When 25% inertinite particles were blended with 75% coal C or D by mass, the low rank inertinite concentrates A caused higher extents of effect on swelling and permeability than the high rank inertinite concentrates B, leading to higher softening temperatures with smaller plastic ranges. During swelling, inertinite concentrates B can compress volatile evolution rates of both coals C and D, however, inertinite concentrates A promoted volatile evolution rate of coal C. Concentrates from both coals A and B can compress the utilization of volatiles for driving swelling, the blend containing concentrate A used nearly half of volatiles that coals C and D themselves used for driving swelling. This study suggested that the additive internite concentrates not only provided a pathway for gas diffusion, but also interacted with the blended coals, which affected thermoplasticity of the whole blends.
- Subject
- coking; inertinite concentrate; swelling; permeability; volaltile releae
- Identifier
- http://hdl.handle.net/1959.13/1470562
- Identifier
- uon:48505
- Identifier
- ISSN:0378-3820
- Language
- eng
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