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  • Experimental and Statistical Investigation of Reservoir Properties with the Effect of Waterflooding Treatment 

    Li, Zihao; Du, Chenguang; Tang, Yongqiang; Li, Xiangming (2020-08-25)
    An oilfield reservoir over long-term operation may have different petrophysical information, which has a significant impact on oilfield maintenance and finance. Successful oilfield enhanced oil recovery benefits a lot from ...
  • Fine Bauxite Recovery Using a Plate-Packed Flotation Column 

    Zhang, Pengyu; Jin, Saizhen; Ou, Leming; Zhang, Wencai; Zhu, Yuteng (MDPI, 2020-09-02)
    In this investigation, the fine-grained bauxite ore flotation was conducted in a plate-packed flotation column. This paper evaluated the effects of packing-plates on recovering fine bauxite particles and revealed the ...
  • Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of -74 μm Coal Fines 

    Bu, Xiangning; Wang, Xuexia; Zhou, Shaoqi; Li, Biao; Zhan, Hanhui; Xie, Guangyuan (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 ...
  • Enhanced Bauxite Recovery Using a Flotation Column Packed with Multilayers of Medium 

    Zhang, Pengyu; Zhang, Wencai; Ou, Leming; Zhu, Yuteng; Zhu, Zicheng (MDPI, 2020-06-30)
    An innovative self-designed medium was packed in a bench-scale flotation column to study its influence on the flotation recovery of bauxite. Computational fluid dynamics (CFD) simulation was conducted to reveal the impact ...
  • A Comprehensive Review of Rare Earth Elements Recovery from Coal-Related Materials 

    Zhang, Wencai; Noble, Aaron; Yang, Xinbo; Honaker, Rick (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 ...
  • Effect of Pore Size Heterogeneity on Hydrocarbon Fluid Distribution, Transport, and Primary and Secondary Recovery in Nano-Porous Media 

    Zhang, Kaiyi; Du, Fengshuang; Nojabaei, Bahareh (MDPI, 2020-04-03)
    In this paper, we investigate the effect of pore size heterogeneity on fluid composition distribution of multicomponent-multiphase hydrocarbons and its subsequent influence on mass transfer in shale nanopores. The change ...
  • Springing for Safe Water: Drinking Water Quality and Source Selection in Central Appalachian Communities 

    Patton, Hannah; Krometis, Leigh Anne Henry; Sarver, Emily (MDPI, 2020-03-21)
    Issues surrounding water infrastructure, access, and quality are well documented in the Central Appalachian region of the United States. Even in cases where residents have in-home piped point-of-use (POU) water, some rely ...
  • Grinding Behaviors of Components in Heterogeneous Breakage of Coals of Different Ash Contents in a Ball-and-Race Mill 

    Duan, Jin; Lu, Qichang; Zhao, Zhenyang; Wang, Xin; Zhang, Yuxin; Wang, Jue; Li, Biao; Xie, Weining; Sun, Xiaolu; Zhu, Xiangnan (MDPI, 2020-03-03)
    Coals used for power plants normally have different ash contents, and the breakage of coals by the ball-and-race mill or roller mill is an energy-intensive process. Grinding phenomena in mill of power plants is complex, ...
  • Differential Entropy Analysis of the Acoustic Characteristics of a Biomimetic Dynamic Sonar Emitter 

    Yang, Luhui; Müller, Rolf (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 ...
  • Development of a Methodology for Interface Boundary Selection in the Multiscale Road Tunnel Fire Simulations 

    Haghighat, Ali; Luxbacher, Kray; Lattimer, Brian Y. (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 ...
  • Dynamic Displacement of an Aluminum Frame Using Close Range Photogrammetry 

    Ghaychi Afrouz, Setareh; Razavi, Mohammad Reza; Pourkand, Ashkan; Mara Dias Wilson, Claudia (MDPI, 2019-07-29)
    Dynamic displacement measurement of objects can be challenging due to the limitations of conventional methods and pricey instrumentation of unconventional methods, such as laser scanners. In this research, Close Range ...
  • A Review of Gas Injection in Shale Reservoirs: Enhanced Oil/Gas Recovery Approaches and Greenhouse Gas Control 

    Du, Fengshuang; Nojabaei, Bahareh (MDPI, 2019-06-19)
    Shale oil and gas resources contribute significantly to the energy production in the U.S. Greenhouse gas emissions come from combustion of fossil fuels from potential sources of power plants, oil refineries, and flaring ...
  • Proceedings of the 15th North American Mine Ventilation Symposium 

    Jong, Edmund; Sarver, Emily Allyn; Schafrik, Steven; Luxbacher, Kray; Mining and Minerals Engineering (Virginia Tech, Department of Mining and Minerals Engineering, 2015-06-20)
    These conference proceedings consist of 70 peer-reviewed technical papers representing subjects related to underground mine ventilation. All were presented at the 15th North American Mine Ventilation Symposium (NAMVS) ...
  • Determination of critical parameters in the analysis of road tunnel fires 

    Haghighat, Ali; Luxbacher, Kray (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 ...
  • Method of separating and de-watering fine particles 

    Mining and Minerals Engineering; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan (United States Patent and Trademark Office, 2016-12-13)
    A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; ...
  • Cleaning and dewatering fine coal 

    Mining and Minerals Engineering; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Eraydin, Mert K.; Freeland, Chad (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 ...
  • News from Holden Hall, Winter 2018 

    Mining and Minerals Engineering (Virginia Tech, 2018)
    News from Holden Hall is the Mining & Minerals Engineering department's newsletter aimed at informing our friends and alumni on the latest events, news, and exceptional faculty and student accomplishments.
  • News from Holden Hall, Spring 2015 

    Mining and Minerals Engineering (Virginia Tech, 2015)
    "News from Holden Hall" is the Mining & Minerals Engineering department's semi-annual newsletter aimed at informing our friends and alumni on the latest events, highlighting exceptional faculty and student accomplishments, ...
  • News from Holden Hall, Winter 2017 

    Mining and Minerals Engineering (Virginia Tech, 2017)
    "News from Holden Hall" is the Mining & Minerals Engineering department's semi-annual newsletter aimed at informing our friends and alumni on the latest events, highlighting exceptional faculty and student accomplishments, ...
  • News from Holden Hall, Winter 2016 

    Mining and Minerals Engineering (Virginia Tech, 2016)
    "News from Holden Hall" is the Mining & Minerals Engineering department's semi-annual newsletter aimed at informing our friends and alumni on the latest events, highlighting exceptional faculty and student accomplishments, ...

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