Record details

Title
    The effect of coal combustion temperature on mineralogical composition and content of residual trace elements in ash
Statement of responsibility
    Zdeněk Weiss, Zdeněk Klika, Marta Chmielová, Ondřej Šustai
Other titles
    Einfluss der Verbrennungstemperatur der Kohle auf die mineralische Zusammensetzung und Gehalt der Spurenelemente in der Asche
    Vliv teploty spalování na mineralogické složení a obsah stopových prvků v popílku
Author
    Chmielová, Marta
    Klika, Zdeněk, 1943-
    Šustai, Ondřej
    Weiss, Zdeněk
Language
    anglicky
Source title - serial
    Acta montana. Series B, Fuel, Carbon, Mineral Processing
Vol./nr.
    No. 5(98)
Pages
    s. 103-118
Year
    1995
Notes
    6 obr., 3 tab.
    České, německé resumé
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Acta montana
Subject group
    analýza stopových prvků
    chemismus hornin
    hornoslezská pánev
    obsah popela v uhlí
    sedimenty bohaté organickým uhlíkem
    teplota
    uhlí bituminózní
    vysoká teplota
Geographical name
    ČR-Morava
    Karviná
    Ostrava
Keyword
    Ash
    Coal
    Combustion
    Composition
    Content
    Effect
    Elements
    Mineralogical
    Residual
    Temperature
    Trace
Abstract (in english)
   The method for quantitative X-ray powder diffraction analysis of ash including indirect determination of portion of non-crystalline phases was developed and applied on the ash prepared in the laboratory at various temperatures from two types coals (A and B). With A type coal, the crystalization of mullite is observed at a higher temperature. With B type coal, anhydrite appears already at 600°C, and at a temperature above 1000°C, crystallization of the anorthite phase is apparent. The total portion of crystalline phases of A type ash decreases as the temperature increases and exhibits a minimum at 800°C. At higher temperatures the total portion of crystalline phases increases again. On the contrary, the total portion of crystalline phases in B type ash exhibits systematic decrease with increasing temperature.
   The analysis of concentrations of trace elements in ash prepared in the laboratory from both types of coal under various temperatures shows that the concentrations of V, Cr, Ni, and Co in ash do not change significantly when the temperature increases. On the contrary, concentrations of Cu, Zn, Pb, and Se decrease with increasing combustion temperature for both A and B types of coal. However, significant changes in concentrations of these elements appear when the temperature is higher than 800°C
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    6. 3. 2008
Import date
    8. 8. 2012