【摘 要】
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The aim of this study was to evaluate whether unburned carbon particles present in fly ash can help in the retention of S,CI,Br,As,Se,Cu,Ni,Zn,Ga,Ge,Rb,and Pb o
【机 构】
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Faculty of Metallurgy and Material Engineering
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The aim of this study was to evaluate whether unburned carbon particles present in fly ash can help in the retention of S,CI,Br,As,Se,Cu,Ni,Zn,Ga,Ge,Rb,and Pb out of flue gas during the coal combustion at fluidised-bed power station where the coal was combusted along with limestone.The competitive influence of 10％-25％ CaO in fly ashes on the distribution of studied elements was studied as well to be clear which factor governs behaviour of studied elements.Except of S (with significant association with CaO) and Rb and Pb (with major affinity to Al2O3) the statistically significant and positive correlation coefficients were calculated for the relations between unburned carbon content and Br (0.959),Cl (0.957),Cu (0.916),Se (0.898),Ni (0.866),As (0.861),Zn (0.742),Ge (0.717),and Ga (0.588) content.The results suggest that the unburned carbon is promising material in terms of flue gas cleaning even if contained in highly calcareous fly ashes.
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