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You searched for +publisher:"Virginia Tech" +contributor:("Suboleski, Stanley C."). Showing records 1 – 2 of 2 total matches.

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Virginia Tech

1. Gupta, Nikhil. Development of a Novel Fine Coal Cleaning and Dewatering Technology.

Degree: PhD, Mining Engineering, 2014, Virginia Tech

The cleaning and dewatering of ultrafine (minus 44 micron) coal slurries is one of the biggest challenges faced by coal industry. Existing commercial technologies cannot produce sellable products from these ultrafine streams; therefore, the industry is forced to discard this potential energy resource to waste impoundments. This practice also has the potential to create an environmental hazard associated with blackwater pollution. To address these issues, researchers at Virginia Tech have worked over the past decade to develop a novel separation process that simultaneously removes both mineral matter and surface moisture from fine coal particles. The first stage of the process uses immiscible non-polar liquids, such as straight chain hydrocarbons, to selectively agglomerate fine coal particles in an aqueous medium. The agglomerates are then passed second stage of processing where mild agitation is used to disperse and fully engulf hydrophobic coal particles into the non-polar liquid and to simultaneously reject any residual water and associated hydrophillic minerals entrapped in the agglomerates. The non-polar liquid, which has a low heat of evaporation, is then recovered by evaporation/condensation and recycled back through the process. The research work described in this document focused on the engineering development of this innovative process using batch laboratory and continuous bench-scale systems. The resulting data was used to design a proof-of-concept (POC) pilot-scale plant that was constructed and successfully demonstrated using a variety of fine coal feedstocks. Advisors/Committee Members: Luttrell, Gerald H. (committeechair), Yoon, Roe-Hoan (committeechair), Suboleski, Stanley C. (committee member), Adel, Gregory T. (committee member).

Subjects/Keywords: fine coal; dewatering; processing; scale-up

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Gupta, N. (2014). Development of a Novel Fine Coal Cleaning and Dewatering Technology. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/64262

Chicago Manual of Style (16th Edition):

Gupta, Nikhil. “Development of a Novel Fine Coal Cleaning and Dewatering Technology.” 2014. Doctoral Dissertation, Virginia Tech. Accessed December 08, 2019. http://hdl.handle.net/10919/64262.

MLA Handbook (7th Edition):

Gupta, Nikhil. “Development of a Novel Fine Coal Cleaning and Dewatering Technology.” 2014. Web. 08 Dec 2019.

Vancouver:

Gupta N. Development of a Novel Fine Coal Cleaning and Dewatering Technology. [Internet] [Doctoral dissertation]. Virginia Tech; 2014. [cited 2019 Dec 08]. Available from: http://hdl.handle.net/10919/64262.

Council of Science Editors:

Gupta N. Development of a Novel Fine Coal Cleaning and Dewatering Technology. [Doctoral Dissertation]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/64262


Virginia Tech

2. Griffin, Kenneth R. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.

Degree: PhD, Mining and Minerals Engineering, 2013, Virginia Tech

Explosions of gas and dust continue to be recognized as an extreme danger in underground coal mines and still occur despite significant technological advances. Mining researchers have been attempting to accurately measure and quantify ventilation and gas properties since early mining; however basic monitoring attempts were limited by the available technologies. Recent advancements in monitoring and communication technologies enable comprehensive atmospheric monitoring to become feasible on a mine-wide scale. Atmospheric monitoring systems (AMS) allow operators to monitor conditions underground in real-time. Real-time monitoring enables operators to detect and identify developing high risk areas of the mine, as well as quickly alert mining personnel underground. Real-time monitoring also can determine whether conditions are safe for mining, to operate ventilation systems more efficiently, and to provide an additional layer of monitoring atmospheric conditions underground. AMS utilizes numerous monitoring technologies that will allow underground coal mines to comprehensively monitor gas and ventilation parameters. AMS are utilized worldwide as well as in the United States, and can be modified to cater to specific hazards at different mines. In the United States, AMS are primarily used to monitor belt lines and electrical installations for smoke, CO, and CH4, and to automatically alarm at set thresholds. The research in this study investigates and analyzed AMS across the world (specifically Australia, Canada, and United States). Two case studies presented in Chapter 5 focus on the utilization and implementation of AMS in two underground coal mines in the United States. These case studies identify challenges regarding installation, data management, and analysis of real-time atmospheric monitoring data. The second case study provides significant evidence that correlates mine ventilation fan outages and changes in barometric pressure to increases in methane from previous works. This research does not attempt to quantify data, but intends to provide engineers knowledge to utilize, design, and implement an AMS. Several incident scenarios are simulated using ventilation computer software, as well as the benefits of monitoring in past disasters are analyzed. This research does not intend to place blame, but intends to increase the understanding of utilizing and implementing AMS in underground coal mines. Advisors/Committee Members: Luxbacher, Kramer Davis (committeechair), Karmis, Michael E. (committeechair), Westman, Erik Christian (committee member), Suboleski, Stanley C. (committee member), Martikainen, Anu Leena (committee member), Luttrell, Gerald H. (committee member), Agioutantis, Zacharias (committee member).

Subjects/Keywords: mining atmospheric monitoring; underground monitoring; mine health and safety; mine explosions

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Griffin, K. R. (2013). Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23299

Chicago Manual of Style (16th Edition):

Griffin, Kenneth R. “Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.” 2013. Doctoral Dissertation, Virginia Tech. Accessed December 08, 2019. http://hdl.handle.net/10919/23299.

MLA Handbook (7th Edition):

Griffin, Kenneth R. “Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.” 2013. Web. 08 Dec 2019.

Vancouver:

Griffin KR. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2019 Dec 08]. Available from: http://hdl.handle.net/10919/23299.

Council of Science Editors:

Griffin KR. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23299

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