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in situ determination of density of coal
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in situ determination of density of coal
Coal Density an overview | ScienceDirect Topics
The raw coal contained 20% ash and 13,3% oxygen Density separations (Table 1) indicated that 78,8% of the coal contained 9,3% ash on averageThe d⩽1,45 g cm −3 fraction was found to contain more hydroxyl and total acidic groups when compared to the d>l,6 g cm −3 fraction (5,3% and 2,3% compared to 2,4% and 1,1% respectively, (Table 1)The majority of the acidic functional groups can beIt has been demonstrated that this technique can be used for the determination of density, ash, Fe, Si, Al, and to delineate the coal seams The technique is also able to determine in situ the deformation temperature of coals for which a correlation exists between the deformation temperature and the percentage of Al, Si and Fe present in coal [4] In situ determination of sulphur in coal seams and
A more accurate method for estimating in situ coal density
Nov 15, 2016· The density of the coal mineral matter may vary significantly, particularly in pyritic coals A knowledge of this variability is useful for determining when the in situ density may be higher than suggested by the ash percentage alone The proportion of mineral matter in relation to ash, referred to herein as the mineral matter ratio (EqIn situ bulk density of coal is a variable applied to various aspects of coal resource evaluation, such as compositing ply analyses of coal attributes that are expressed on a weight per cent basis, and determining tonnages from volume estimates Its value is a function of composition and porosity of the in situTheoretical estimation of in situ bulk density of coal
Estimation of InSitu Density from Apparent Relative
The field measurement of in situ density adapted the standard civil engineering technique described in AS 12895321993 which explicitly measures the volume of the void left after removing a carefully weighed mass of coal using a graded sand of known bulk densityA leastsquares hyperbolic formula is derived from the dry coal and mineral properties in order to estimate the dry sample density The formula accepts two in situ moisture percentages, for both coal and rock, in order to estimate in situ density for coal and other lithologies This method has several advantages over existing techniquesA more accurate method for estimating in situ coal density
In Situ Determination of Gaseous Inorganic Species
Institute of Energy and Climate Research (IEK2), Forschungszentrum Jülich, LeoBrandtStraße 1, 52425 Jülich, Germany *Telephone: +4974Jul 16, 2020· Determination of Dry Density of soil compaction test by sand replacement method in hindi road cons | Duration: 19:51 techgoyal construction guru Recommended for you 19:51Determination of insitu density by core cutter method
Theoretical estimation of in situ bulk density of coal
In situ bulk density of coal is a variable applied to various aspects of coal resource evaluation, such as compositing ply analyses of coal attributes that are expressed on a weight per cent basis, and determining tonnages from volume estimates Its value is a function of composition and porosity of the in situSince the results for coal bulk density change according to variations in the above factors, it is recommended that a separate size analysis and total moisture determination be made in accordance with ISO 1953 and ISO 589, respectivelyISO 23499:2013(en), Coal ? Determination of bulk density
Testing the in situ Bulk Density of Mining Waste Stored in
Based on the mass and volume results obtained using the method described above, the bulk density of three coal mining waste samples was obtained for the actual conditions of the dump The insitu testing allowed us to consider the actual density of the waste material found in the dumpInstitute of Energy and Climate Research (IEK2), Forschungszentrum Jülich, LeoBrandtStraße 1, 52425 Jülich, Germany *Telephone: +4974In Situ Determination of Gaseous Inorganic Species
Original Research Testing the in situ Bulk Density of
Determining the density of coal mining wastes comes down to the determination of two parameters of the tested sample: mass and volume Measuring the mass and volume insitu conditions is a reliable assessment of the actual value of density The transfer of the sample and conducting laboratory testing do not ensure theMethod of determination of bulk density of charge coal using charge coal stimulation located at QA&TD (SPS1) The test is conducted on the bulk density testing apparatus at (PDF) Mathematical model for determination of Bulk Density
Method for measuring density of a bulk material in a
@article{osti, title = {Method for measuring density of a bulk material in a stockpile}, author = {Cowherd, D C and DeWitte, J L and Taylor, K A and Whitaker, W C and Wolfe, Ce A}, abstractNote = {A method for determining the density of coal or other bulk material in a stockpile includes boring a calibration hole into the pile and collecting at least a portion of the cuttings thusThe water replacement test method is used for the determination of field density of soil and rocks (includes materials that commonly contain particles larger than 75mm) in a test pit based on the ASTM D5030 It is specifically used for the density evaluation of soil in unsaturated condition The accuracy of the test result would []Determination of Insitu Density of Soil by Water
The application of promptgamma neutron activation
Feb 01, 2001· The PGNAA technique was tested for the insitu determination of ash, Fe, Si, Al and density of coal seams in waterfilled boreholes The technique is also able to determine in situ the deformation temperature of coals for which a correlation exists between the deformation temperature and the percentage of Al, Si and Fe present in coalIn situ In situ refers to the condition of the coal as being undisturbed in the ground An estimate of Coal Resources should state the condition of the coal in the ground and the values for moisture and density Inventory Coal Inventory Coal refers to an estimate of in situ coal that does not consider or does not pass the reasonable prospects testAUSTRALIAN GUIDELINES FOR THE ESTIMATION AND
A more accurate method for estimating in situ coal density
A more accurate method for estimating in situ coal density and mineral matter from ash and specific energy determinations Eric Robecka,⁎,DennisHuob a Weir International, Inc, 1431 Opus PlaceIn situ determination of sulfur in coal seams and overburden rock by prompt gamma neutron activation analysis (PGNAA) techniques was discussedIn situ determination of sulphur in coal seams and
ACARP Abstract
Coal moisture, and particularly in situ moisture (M is), is a parameter which is often examined inadequately during exploration programs, and the resulting limited knowledge can easily impact negatively producing inaccurate definition of reserves, incorrect estimations of product moisture levels, and poor tonnage reconciliationsM is is very difficult to determineThe field measurement of in situ density adapted the standard civil engineering technique described in AS 12895321993 which explicitly measures the volume of the void left after removing a carefully weighed mass of coal using a graded sand of known bulk densityEstimation of InSitu Density from Apparent Relative
In situ determination of sulphur in coal seams and
In situ determination of sulfur in coal seams and overburden rock by prompt gamma neutron activation analysis (PGNAA) techniques was discussedA more accurate method for estimating in situ coal density and mineral matter from ash and specific energy determinations Eric Robecka,⁎,DennisHuob a Weir International, Inc, 1431 Opus PlaceA more accurate method for estimating in situ coal density
In Situ Determination of Gaseous Inorganic Species
Institute of Energy and Climate Research (IEK2), Forschungszentrum Jülich, LeoBrandtStraße 1, 52425 Jülich, Germany *Telephone: +4974Determining the density of coal mining wastes comes down to the determination of two parameters of the tested sample: mass and volume Measuring the mass and volume insitu conditions is a reliable assessment of the actual value of density The transfer of the sample and conducting laboratory testing do not ensure theOriginal Research Testing the in situ Bulk Density of
Estimation of Insitu Stress and Coal Bed Methane
Paul S, Chatterjee R (2011a) Determination of insitu stress direction from cleat orientation mapping for coal bed methane exploration in southeastern part of Jharia coalfield, India Int J Coal Geol 87:87–96 CrossRef Google ScholarCoal moisture, and particularly in situ moisture (M is), is a parameter which is often examined inadequately during exploration programs, and the resulting limited knowledge can easily impact negatively producing inaccurate definition of reserves, incorrect estimations of product moisture levels, and poor tonnage reconciliationsM is is very difficult to determineACARP Abstract
Evaluation of the electrical density gauge for insitu
The Electrical Density Gauge (EDG) is an alternative insitu test that is quicker, safer and easier to maintain since it uses electric current to measure the compaction characteristics of the soil The objective of the study was to determine the repeatability, accuracy and applicability of the EDG on South African soils by comparing itsBased on the mass and volume results obtained using the method described above, the bulk density of three coal mining waste samples was obtained for the actual conditions of the dump The insitu testing allowed us to consider the actual density of the waste material found in the dumpTesting the in situ Bulk Density of Mining Waste Stored in
ISO ISO 23499:2013 Coal — Determination of bulk
Coal — Determination of bulk density for the use in charging of coke ovens Buy this standard This standard was last reviewed and confirmed in 2018 Therefore this version remains current Abstract Preview ISO 23499:2013 provides description of a cone procedure for determining an uncompacted bulk density of crushed coal less than 37 mm inAcademiaedu is a platform for academics to share research papers(PDF) Density of coal and ash | Binu Mathew Academiaedu
The application of promptgamma neutron activation
The PGNAA technique was tested for the insitu determination of ash, Fe, Si, Al and density of coal seams in waterfilled boreholes The technique is also able to determine in situ the deformation temperature of coals for which a correlation exists between the deformation temperature and the percentage of Al, Si and Fe present in coalAbstract The nuclear density cone penetrometer (NDCP) is an in situ testing device that can provide continuous data on soil density, but it measures the composite density of the soil within a spheroid centered at the midpoint between the gamma ray source and the detector A theoretical model for predicting of the NDCP is proposed, and equations for calculating are derived when the NDCPIn Situ Determination of Density Profiles in Complex
Determine The InSitu Dry Density Of Soil By Sand
Procedure To Determine The InSitu Dry Density Of Soil By Sand Replacement Method A Calibration of apparatus a) The method given below should be followed for the determination of the weight of sand in the cone of the pouring cylinder: i) The pouring cylinder should be filled so that the level of the sand in the cylinder is within about 10mm
