interpreting the characteristics of coal seams from chemical

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  • Coal Mining and Processing

    Although the United States has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically recoverableThis is not a fixed quantity, but depends on the geological resource, the market price, and the cost of mining The particular characteristics of the coal mining industry create unique ....

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  • Coal Seam

    Pramod Thakur, in Coal Bed Methane, 2014 812 Reservoir Properties of Coal Seams Coal seam degasification techniques to be used in a mine depend on the reservoir properties of the coal seams being mined Good methane control planning depends on accurate information on the reservoir properties of the coal seam and the total gas emission space created by the mining process...

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  • Coalbed methane

    Coalbed methane (CBM or coal-bed methane), coalbed gas, coal seam gas (CSG), or coal-mine methane (CMM) is a form of natural gas extracted from coal beds In recent decades it has become an important source of energy in United States, Canada, Australia, and other countri The term refers to methane adsorbed into the solid matrix of the coal...

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  • Chapter 7 COAL

    FIGURE 7-3 Variation of selected coal properties with coal rank The chemical approach to characterizing coals is to determine the amounts of the principal chemical elements in them In the jargon of the coal business, this procedure is called the ultimate analysis of coal Carbon and hydrogen are the principal combustible elements in coal...

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  • NIOSHTIC

    Spatial configuration for preparation characteristics, particularly, the effect of crushing on sulfur release, low- and high-temperature, carbonization properties, the hardgrove grindability index, the coal hardness index, gasification variables, and hydrogenation factors were constructed for the same area of the Pittsburgh seam...

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  • Coal petrology and the origin of coal macerals ,

    May 01, 2002· Read "Coal petrology and the origin of coal macerals: a way ahead?, International Journal of Coal Geology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips...

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  • Chemical Characteristics of Coal

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  • Coal assay

    Chemical properties of coal Coal comes in four main types or ranks: lignite or brown coal, bituminous coal or black coal, anthracite and graphiteEach type of coal has a certain set of physical parameters which are mostly controlled by moisture, volatile content (in terms of aliphatic or aromatic hydrocarbons) and carbon content Moisture Moisture is an important property of coal, as all ....

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  • Computer

    COMPUTER-ASSISTED INTERPRETATION OF GEOPHYSICAL WELL LOGS IN A COAL DEPOSITIONAL ENVIRONMENT, ILLINOIS BASIN, KENTUCKY By jEFFREY J DANIELS andjAMES H SCOTT ABSTRACT Physical properties detected ,...

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  • International Journal of Coal Geology

    The International Journal of Coal Geology deals with fundamental and applied aspects of the geology and petrology of coal, oil/gas source rocks and shale gas resourc The journal aims to advance the exploration, exploitation and utilization of these resources, and to stimulate environmental awareness as well as advancement of engineering for effective resource management...

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  • Characterizing a Coal

    Combining the interpretation of DTS data with that of distributed acoustic sensing data may provide a solution to the flow allocation challenge Reference SPE 171545-MS The Application of Advanced Wellbore Monitoring in Coal Seam Gas for Continuous Inflow Profiling by G Naldrett et al...

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  • Analysis of Coal

    The analysis of coal determines the following aspects: 1 Measurement of moisture The moisture content is being determine by placing a sample of powdered raw coal of size 200- micron in an uncovered crucible which is placed in the oven kept at 108 +2 °C along with the l After that sample is cooled to room temperature and weighed again...

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  • Coal mining

    Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic ....

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  • Theories of Coal Formation

    Coal can also be said as an organic sedimentary rock, the physical, chemical and technological properties of which depend on its composition and degree of metamorphism There are two major theories of coal formation, (1) In situ Theory of coal Formation, (2) Drift Theory of Coal formation...

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  • NIOSHTIC

    A computerized moving average technique was developed to interpolate coal seam characteristics between sample points The interpolative method coupled with multivariate regression analysis and simulation procedures was used to forecast coal properties not ,...

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  • COAL CHARACTERISTICS

    The fixed carbon content of the coal is the carbon found in the material which is left after volatile materials are driven off This differs from the ultimate carbon content of the coal because some carbon is lost in hydrocarbons with the volatiles Calorific value, measured in Btu is the amount of chemical energy stored in a coal that is ....

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  • The Origin of Coal

    The Origin of Coal by Stuart E Nevins, MS (aka Steve Austin) Abstract Accumulated, compacted and altered plants form a sedimentary rock called coal It is not only a resource of great economic importance, but a rock of intense fascination to the student of earth history...

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  • Coal Types, Formation and Methods of Mining

    Coal is an organic sediment consisting of a complex mixture of substanc Depending upon the evolutionary developmental phase of coal formation there are: Four kinds of coal The first evolutionary phase is peat which is little more than wood pulp that has been badly decomposed...

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  • Exposure Data

    For other exposure data, see Section 13 Coal mine dust is a complex and heterogeneous mixture containing more than 50 different elements and their oxid The mineral content varies with the particle size of the dust and with the coal seam...

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