Calcination is a typical process associated with the utilization of coal gangue A concern associated with this procedure is the emission of sulfur dioxide SO 2 In this work the behavior of SO 2 release during coal gangue calcination under an air atmosphere were systematically investigated and compared to the characteristics of SO 2 evolution from
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— release of heavy metals in low sulfur coal gangue; and more precipitation is associated with better release of heavy metals from the low sulfur coal gangue Keywords Coal gangue Leaching Heavy metal Leaching rate 1 Introduction Coal gangue is an industrial solid waste inevitably pro duced in coal mining and coal washing and its
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— Coal is the main energy source in China which can produce a large amount of coal gangue in the process of mining In the process of accumulation coal gangue can release a variety of harmful ions
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— Based on the validated finite element model a parametric study was carried out to investigate the effects of coal gangue replacement rate steel fiber volume content and drop height of the drop weight on the behavior of the beams This study might provide a basis for the future engineering project applications of steel fiber reinforced coal
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— A rough estimate of the annual amount of sulfur arsenic mercury and fluoride emission from spontaneous combustion of coal gangue in China was determined
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Calcination is a typical process associated with the utilization of coal gangue A concern associated with this procedure is the emission of sulfur dioxide SO 2 In this work the behavior of SO 2 release during coal gangue calcination under an air atmosphere were systematically investigated and compared to the characteristics of SO 2 evolution from
Eco friendly and selective separation of nickel and copper from low grade nickel sulfide ore via sulfur fixation roasting with MgCO 3 but the recovery rate of nickel and cobalt is low only % and % Considering Contribution of steel slag on enhancing the performance of coal gangue based cementitious materials and simultaneous
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The construction of a power plant using a 660 MW e supercritical circulating fluidized bed CFB boiler with co combustion of coal and gangue has been proposed in China Therefore this study simulated the distribution law and transformation mechanism of sulfur containing phases using three low calorific samples of gangue and coal mixtures under different
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Downloadable The construction of a power plant using a 660 MW e supercritical circulating fluidized bed CFB boiler with co combustion of coal and gangue has been proposed in China Therefore this study simulated the distribution law and transformation mechanism of sulfur containing phases using three low calorific samples of gangue and coal mixtures
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DOI / Corpus ID 40019818; Estimate of sulfur arsenic mercury fluorine emissions due to spontaneous combustion of coal gangue An important part of Chinese emission inventories
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— The conclusions are as follows higher heavy metal content in low sulfur coal gangue is associated with greater leaching of heavy metals; acidic conditions promote the release of heavy metals in
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— Batch experiments were conducted to comparatively evaluate the inhibition effects and mechanisms of a low concentration 1% proline solution cover on the release of pollutants from high sulfur coal gangue High sulfur coal gangue was continuously immersed in a proline solution and in deionized water as a control treatment for 540 days The
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— 1 Introduction In China coal economy as a supportive industry has an irreplaceable role in economic development production and living However in the coal mining production process coal gangue accounts for 15 20 % of the raw coal but cannot be used like coal due to its low calorific value and low combustion efficiency [1] Generally
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