Optimization of clean coal specifications

CIM Journal, Vol. 5, No. 4, 2014
L. X. Li
Lenerge Resources Ltd., Coquitlam, British Columbia, Canada
Les producteurs de charbon cokéfiable sont souvent mis en présence de situations où la qualité du charbon épuré s’avère variable lorsqu’ils exploitent des gisements multicouches renfermant des charbons aux propriétés de lavabilité et de cokéfaction différentes. Le présent article porte sur la façon de faire passer, dans le cas d’une propriété renfermant un seul type de charbon, les spécifications initiales d’un charbon épuré à teneur en cendres de 8,5 % obtenue sur une base de charbon séché à l’air (ADB) et un indice de gonflement libre (FSI) de 5,5 à une teneur en cendres (ADB) de 7,5 % et un FSI de 6. Il suffit de répartir les couches de charbon en deux groupes aux fins de préparation et de mélange dosé du charbon. Un modèle économique préliminaire illustre comment cette démarche permet d’augmenter le rendement économique grâce au recours à un facteur favorable.
Mots clés : Multiseam, Coal processing, Blending, Clean coal specification, Optimization, Beneficial factor
Résumé Les producteurs de charbon cokéfiable sont souvent mis en présence de situations où la qualité du charbon épuré s’avère variable lorsqu’ils exploitent des gisements multicouches renfermant des charbons aux propriétés de lavabilité et de cokéfaction différentes. Le présent article porte sur la façon de faire passer, dans le cas d’une propriété renfermant un seul type de charbon, les spécifications initiales d’un charbon épuré à teneur en cendres de 8,5 % obtenue sur une base de charbon séché à l’air (ADB) et un indice de gonflement libre (FSI) de 5,5 à une teneur en cendres (ADB) de 7,5 % et un FSI de 6. Il suffit de répartir les couches de charbon en deux groupes aux fins de préparation et de mélange dosé du charbon. Un modèle économique préliminaire illustre comment cette démarche permet d’augmenter le rendement économique grâce au recours à un facteur favorable.
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