Coal Gangue Index

  • Minerals Free Full Text Co Disposal of Coal

    Coal gangue is a by product of coal mining and washing and its discharge amount accounts for approximately 10 15% of total coal production [1 2] The coal gangue dump is formed by the direct storage of coal gangue and occupies a great deal of farmland and arable land resources [1 3] The active components contained in coal gangue such as combustible carbon pyrite and heavy metal sulphide

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  • Microstructure of Coal Gangue and Precipitation

    · The concentration of heavy metal ions that precipitated from the coal gangue was used as the detection index and the distilled water with the initial pH value of 7 was used as the basic solution Experimental Design of Static Immersion Leaching of Coal Gangue Experimental Design To study the precipitation and release characteristics of heavy metal elements Mn Cu Zn Pb and Cr

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  • Research on Basic Mechanical Properties and

    · In order to study the freeze thaw damage law of the basic mechanical properties and fracture performance of coal gangue concrete four kinds of coal gangue concrete specimens with different replacement rates of coal gangue coarse aggregate were designed and then the basic mechanical test and three point bending loading were carried out under different times of the freeze

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  • Minerals Free Full Text Co Disposal of Coal

    Coal gangue is a by product of coal mining and washing and its discharge amount accounts for approximately 10 15% of total coal production [1 2] The coal gangue dump is formed by the direct storage of coal gangue and occupies a great deal of farmland and arable land resources [1 3] The active components contained in coal gangue such as combustible carbon pyrite and heavy metal sulphide

    Get Price
  • Reclaiming Subsidized Land An Evaluation of

    · Soil and coal gangue water content in different interlayered soil profiles are shown in Figure 7 With depth increase water content of soil or gangue increased There was no significant difference of topsoil 0 30 cm water content between control experiments and Group 1 and Group 2 However the difference of topsoil water content between control experiments and Group 3 was

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  • Quantitative Inversion of Fixed Carbon

    In this paper we obtained the thermal infrared spectrum of coal gangue and developed a new spectral index to achieve the automated quantification of fixed carbon content Thermal infrared spectroscopy analyses of 42 gangue and three coal samples were performed using a Turbo FT thermal infrared spectrometer Then the ratio index RI

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  • Research on Basic Mechanical Properties and

    · In order to study the freeze thaw damage law of the basic mechanical properties and fracture performance of coal gangue concrete four kinds of coal gangue concrete specimens with different replacement rates of coal gangue coarse aggregate were designed and then the basic mechanical test and three point bending loading were carried out under different times of the freeze

    Get Price
  • Microstructure of Coal Gangue and Precipitation

    · The concentration of heavy metal ions that precipitated from the coal gangue was used as the detection index and the distilled water with the initial pH value of 7 was used as the basic solution Experimental Design of Static Immersion Leaching of Coal Gangue Experimental Design To study the precipitation and release characteristics of heavy metal elements Mn Cu Zn Pb and Cr

    Get Price
  • Thermogravimetric Assessment of Combustion Characteristics

    The coal gangue content in the sample decreases which means that reactions are slower if lignite coal is lower Combustion Characteristics Index under Different Proportions of Analysis The following parameters characterize the combustion characteristics of Table 3 can be obtained from Table 2 Ignition Index D i is Determined by the Equation as Follows max i if DTG D TTu 2 1 Where DTG

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  • NHESS Potential ecological risk assessment and

    The aim of the present study is to evaluate the potential ecological risk and trend of soil heavy metal pollution around a coal gangue dump in Jilin Province Northeast China The concentrations of Cd Pb Cu Cr and Zn were monitored by inductively coupled plasma mass spectrometry ICP MS The potential ecological risk index method developed by Hakanson 1980 was employed to assess the

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  • Factors Affecting Brittleness Behavior of Coal

    · Coal gangue which is the solid waste produced during the coal processing causes serious environmental problems Lightweight concrete by making use of the coal gangue ceramsite as the aggregate has many advantages as the construction material However the high brittleness of lightweight aggregate concrete is one of the problems for its application in building infrastructure

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  • Freezing Thawing Damage Mechanism of Coal

    · Coal gangue ceramsite made of coal gangue produced in a coal mine in Shenmu City Shaanxi Province China with a particle size of 4∼6 mm an apparent density of 1923 kg/m 3 a water absorption rate of % and a crushing index of % As to coal gangue the detailed relative contents of chemical constituents are shown in Table 2 and

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  • Quantitative Inversion of Fixed Carbon

    In this paper we obtained the thermal infrared spectrum of coal gangue and developed a new spectral index to achieve the automated quantification of fixed carbon content Thermal infrared spectroscopy analyses of 42 gangue and three coal samples were performed using a Turbo FT thermal infrared spectrometer Then the ratio index RI

    Get Price
  • Characterization and Identification of Coal and

    Because of the high organic carbon concentration in carbonaceous shale a large proportion of carbonaceous shales are often misclassified into coals using visible and near infrared VIS NIR reflectance spectroscopy in the field of coal gangue identification of hyperspectral remote sensing of coal mine In order to study spectral characterization of coal and carbonaceous shale three

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  • Soil characterization and differential patterns of

    Soil characterization and differential patterns of heavy metal accumulation in woody plants grown in coal gangue wastelands in Shaanxi China Environ Sci Pollut Res Int 2016 Jul 23 13 13489 97 doi /s11356 016 6432 8

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  • Coal Gangue

    Abstract The current statistics show coal gangue discharge is 100 million tons per year and the accumulated discharge has been as high as billion tons It comprises the largest portion of solid waste in our country Its storage not only requires valuable land resources but also pollutes the air water and soil of the storage sites

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  • Reclaiming Subsidized Land An Evaluation of

    · Soil and coal gangue water content in different interlayered soil profiles are shown in Figure 7 With depth increase water content of soil or gangue increased There was no significant difference of topsoil 0 30 cm water content between control experiments and Group 1 and Group 2 However the difference of topsoil water content between control experiments and Group 3 was

    Get Price
  • Damage constitutive model of coal gangue

    · Coal gangue is a by product of coal mining and raw coal processing Its waste accumulation seriously threatens the ecological environment and people s health and safety Therefore improving the utilization rate of coal gangue resources is imperative The creation of concrete using coal gangue instead of natural crushed stone can consume a considerable amount of coal gangue

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  • Freezing Thawing Damage Mechanism of Coal

    · Coal gangue ceramsite made of coal gangue produced in a coal mine in Shenmu City Shaanxi Province China with a particle size of 4∼6 mm an apparent density of 1923 kg/m 3 a water absorption rate of % and a crushing index of % As to coal gangue the detailed relative contents of chemical constituents are shown in Table 2 and

    Get Price
  • Evaluating the distribution and potential

    Potential ecological risks were at strong level regardless of the type of the coal gangue because of Mo and Pb and the comprehensive ecological risk index of Weathering promotes the release of heavy metals in the gangue Furthermore the contents of Cu and Pb in leaching solution and their release times in weathered gangue were significantly higher than those of the fresh one

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  • Coal Gangue and its Application Research in

    The current statistics show coal gangue discharge is 100 million tons per year and the accumulated discharge has been as high as billion tons It comprises the largest portion of solid waste in our country Its storage not only requires valuable land resources but also pollutes the air water and soil of the storage sites resulting in waste of resources

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  • Basic Characteristics of Coal Gangue in a Small

    The accumulation/improper treatment of coal gangue will not only lead to waste of land but also cause environmental pollution Especially the impact of radioactive elements on the surrounding ecological environment is widely concerned by many scholars In this study the concentration of radioactive elements uranium U and thorium Th of small scale coal gangue mining site and surrounding

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  • Factors Affecting Brittleness Behavior of Coal

    · Coal gangue which is the solid waste produced during the coal processing causes serious environmental problems Lightweight concrete by making use of the coal gangue ceramsite as the aggregate has many advantages as the construction material However the high brittleness of lightweight aggregate concrete is one of the problems for its application in building infrastructure

    Get Price
  • Research on Basic Mechanical Properties and

    · In order to study the freeze thaw damage law of the basic mechanical properties and fracture performance of coal gangue concrete four kinds of coal gangue concrete specimens with different replacement rates of coal gangue coarse aggregate were designed and then the basic mechanical test and three point bending loading were carried out under different times of the freeze

    Get Price
  • Microstructure of Coal Gangue and Precipitation

    · The concentration of heavy metal ions that precipitated from the coal gangue was used as the detection index and the distilled water with the initial pH value of 7 was used as the basic solution Experimental Design of Static Immersion Leaching of Coal Gangue Experimental Design To study the precipitation and release characteristics of heavy metal elements Mn Cu Zn Pb and Cr

    Get Price

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