Browsing Scholarly Works, Mining and Minerals Engineering by Title
Now showing items 1-20 of 64
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Acid Leaching of Rare Earth Elements from Coal and Coal Ash: Implications for Using Fluidized Bed Combustion To Assist in the Recovery of Critical Materials
(American Chemical Society, 2019-07-18)High temperature pretreatment of coal-based mineral matter in an oxidizing environment significantly enhances the leaching characteristics of rare earth elements (REEs). A research study has found that the temperatures ... -
Apparatus for improved ash and sulfur rejection
(United States Patent and Trademark Office, 1996-06-04)An apparatus for separating impurities from coal, includes a device for removing a predetermined amount of ash-forming substances from the coal and a device for removing a predetermined amount of high specific gravity ... -
Application of Double-Difference Seismic Tomography to Carbon Sequestration Monitoring at the Aneth Oil Field, Utah
(MDPI, 2013-10-23)Double difference seismic tomography was performed using travel time data from a carbon sequestration site at the Aneth oil field in southeast Utah as part of a Department of Energy initiative on monitoring, verification, ... -
Characteristics of respirable dust in eight Appalachian coal mines: A dataset including particle size and mineralogy distributions, and metal and trace element mass concentrations
(Elsevier, 2019-08-01)Respirable dust samples were collected in several key locations of eight underground coal mines in central and northern Appalachia. In total, there were 76 unique sampling events (i.e., specific location in a specific ... -
Characterization of Particulates from Australian Underground Coal Mines
(MDPI, 2021-04-23)The re-identification of coal workers’ pneumoconiosis in Queensland in 2015 has prompted improvements in exposure monitoring and health surveillance in Australia. The potential consequences of excessive exposure to respirable ... -
Cleaning and dewatering fine coal
(United States Patent and Trademark Office, 2017-10-17)Fine coal is cleaned of its mineral matter impurities and dewatered by mixing the aqueous slurry containing both with a hydrophobic liquid, subjecting the mixture to a phase separation. The resulting hydrophobic liquid ... -
Comparison of respirable coal mine dust constituents estimated using FTIR, TGA, and SEM-EDX
(Springer, 2022-02-24)Since the mid-1990s, there has been a resurgence of severe lung disease among US coal miners. This has prompted efforts to better characterize and monitor respirable dust exposures—especially with respect to mineral ... -
A Comprehensive Review of Rare Earth Elements Recovery from Coal-Related Materials
(MDPI, 2020-05-17)Many studies have been published in recent years focusing on the recovery of rare earth elements (REEs) from coal-related materials, including coal, coal refuse, coal mine drainage, and coal combustion byproducts particularly ... -
A Computer-Controlled SEM-EDX Routine for Characterizing Respirable Coal Mine Dust
(MDPI, 2017-01-23)A recent resurgence in coal workers’ pneumoconiosis (or “black lung”) and concerns over other related respiratory illnesses have highlighted the need to elucidate characteristics of airborne particulates in occupational ... -
A conceptual protocol for integrating multiple parameters for risk assessment due to induced seismicity in a deep mine
(2020-01-01)Typically, the time-dependent b-value has been shown to decrease prior to the occurrence of a higher-magnitude event, thus providing a possible indicator of the timing of a significant event. The Energy Index relates seismic ... -
Considerations for an Automated SEM-EDX Routine for Characterizing Respirable Coal Mine Dust
(2015)Respirable dust in coal mining environments has long been a concern for occupational health. Over the past several decades, much effort has been devoted to reducing dust exposures in these environments, and rates of coal ... -
Considerations for TGA of Respirable Coal Mine Dust Samples
(2015)Respirable dust in coal mining environments has long been a concern for occupational health. Over the past several decades, much effort has been devoted to reducing dust exposures in these environments, and rates of coal ... -
Demonstration of Optical Microscopy and Image Processing to Classify Respirable Coal Mine Dust Particles
(MDPI, 2021-08-02)Respirable coal mine dust represents a serious health hazard for miners. Monitoring methods are needed that enable fractionation of dust into its primary components, and that do so in real time. Near the production face, ... -
Design of Cell-Based Flotation Circuits under Uncertainty: A Techno-Economic Stochastic Optimization
(MDPI, 2021-04-27)The design of cell-based flotation circuits is often completed in two distinct phases, namely circuit structure identification and equipment sizing selection. While recent literature studies have begun to address the ... -
Determination of critical parameters in the analysis of road tunnel fires
(Elsevier, 2018-07-12)The analysis of the fluid characteristics downstream of a fire source in transportation tunnels is one the most important factor in the emergency response, evacuation, and the rescue service studies. Some crucial parameters ... -
Determining Coalbed Methane Production and Composition from Individual Stacked Coal Seams in a Multi-Zone Completed Gas Well
(MDPI, 2017-10-02)This work proposes a novel and cost-effective approach to determine coalbed methane (CBM) production and composition from individual coal seams in a multi-zone completed CBM well. The novel method uses water to cover ... -
Development of a Methodology for Interface Boundary Selection in the Multiscale Road Tunnel Fire Simulations
(2018-07)The simulation of large complex dynamical systems such as a fire in road tunnels is necessary but costly. Therefore, there is a crucial need to design efficient models. Coupling of computational fluid dynamics (CFD) models ... -
Differential Entropy Analysis of the Acoustic Characteristics of a Biomimetic Dynamic Sonar Emitter
(MDPI, 2020-03-03)Active noseleaf deformations during pulse emission observed in hipposiderid and rhinolophid bats have been shown to add a time dimension to the bats’ acoustic emission characteristics beyond the established dependencies ... -
Direct-on-Filter FTIR Spectroscopy to Estimate Calcite as A Proxy for Limestone ‘Rock Dust’ in Respirable Coal Mine Dust Samples
(MDPI, 2021-08-25)Application of fine, inert ‘rock dust’ (RD) to the surfaces in underground coal mines is a common method for mitigating coal dust explosion hazards. However, due to its size, RD has the potential to contribute to the ... -
Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of -74 μm Coal Fines
(2020-06-16)In this study, experimental results of conventional flotation and carrier flotation were characterized by six commonly used flotation kinetic models. Two statistical criteria (coefficient of determination, R-2, and root ...
