maceral


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maceral

[¦mas·ə¦ral]
(geology)
The microscopic organic constituents found in coal.
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Maceral and biomarker data show that the OM pool is dominated by algal, planktonic and bacterial OM (Fig.
BIOMARKER CHARACTERIZATION OF VARIOUS OIL SHALE GRADES IN THE UPPER CRETACEOUS QINGSHANKOU FORMATION, SOUTHEASTERN SONGLIAO BASIN, NE CHINA
Currently, particular attention is paid to coal macerals and optical properties in relation to CRI and CSR indexes (Gupta et al., 2012; Pusz et al., 2009, 2003).
RELATIONSHIPS AMONG COKING COALS AND RELATED COKES CHARACTERISTICS: A STATISTICAL EVALUATION
Table 1: The proximate, ultimate, and maceral composition of anthracite.
Change of Pore-Fracture Structure of Anthracite Modified by Electrochemical Treatment Using Micro-CT
Despite the significant effects of the coal type on gas adsorption by coal, no agreement has been reached on how the maceral compositions are correlated to the adsorption capacity of coal for methane [34].
Effects of Maceral Compositions of Coal on Methane Adsorption Heat
Several methods are available to determine the type and amount of mineral matter and to assess their associations with coal macerals. Fractionation method was used by several researchers (Cloke et al., 2002; Spears and Booth, 2002) to study associations of mineral components with organic material of coal in different size fractions.
Liberation studies of Padhrar coal by using fractionation method, XRD analysis and megascopic and microscopic techniques
En esta investigacion, %Ro proporciono datos contundentes sobre el grado de madurez termal de las muestras analizadas (mantos de carbon), debido a que la vitrinita (maceral) va aumentando su reflectividad, a causa de reacciones de aromatizacion irreversibles y complejas, en la medida que aumenta la madurez termal de la roca.
Estudio de la maduracion termal de kerogeno en los carbones de la Formacion Guaduas, Cordillera Oriental (Colombia), mediante analisis de reflectancia de vitrinita, pirolisis Rock Eval, resonancia magnetica nuclear y analisis proximal
La naturaleza del carbon, tal como el rango y la composicion maceral.
Evidencias del choque termico en particulas de polvo despues de una explosion en mineria de carbon
Trace element data as well as maceral data were used to reconstruct depositional environment of the Miocene marine source rocks in the Qiongdongnan Basin.
Palaeoenvironment and its control on the formation of miocene marine source rocks in the Qiongdongnan Basin, Northern South China Sea
The process of self-heating of coal is influenced by many factors, including deposit temperature, the degree of coal fragmentation, type of coal and its rank, and moisture and ash content of coal, as well as maceral composition.
The effect of pore volume of hard coals on their susceptibility to spontaneous combustion
La reactividad del carbonizado en el proceso de combustion esta influenciada por la velocidad de calentamiento, tiempo de residencia durante la desvolatilizacion, temperatura de combustion, ambiente gaseoso (nivel de oxigeno), morfologia del carbonizado, contenido de carbono, composicion maceral y mineral, rango del carbon, presion, area superficial activa, textura optica, porosidad del carbonizado, contenido de hidrogeno en el carbonizado y contenido de carbono y oxigeno (relacion atomica O/C) del carbon que produce el carbonizado (Gale et al., 1996; Cai et al., 1998; Arenillas et al., 1999 y 2001).
Efecto de la relacion atomica oxigeno/ carbono del carbon sobre la reactividad en la combustion de carbonizados
Vitrinite reflectance (R0) value is microscopically determined on the wood-derived maceral vitrinite.
Production of Portland Cement Using Moroccan Oil Shale and Comparative Study Between Conventional Cement Plant and Cement Plant Using Oil Shale
et al Influencia do rank e da composicao maceral de carvao pulverizado na eficiencia de combustao no raceway do alto-forno.
Quantification of coal char and coke fines in the off-gas blast furnace samples by X-ray diffraction/Quantificacao por DRX dos componentes carbonosos presentes no po de balao do alto-forno

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