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In-Plant Testing of High-Efficiency Hydraulic Separators, Phase II Annual Technical Progress Report: 2005

Description: Hydraulic separators are commonly used for particle size classification and gravity concentration of minerals and coal. Unfortunately, the efficiency of these processes can be quite low due to poor equipment design and variations in feed consistency. To help alleviate these problems, an industry-driven R&D program has been undertaken to develop a new generation of hydraulic separators that are more efficient and less costly to operate and maintain. These units, which are commercially called… more
Date: May 22, 2006
Creator: Luttrell, G. H.; Honaker, R. Q.; Bratton, R. C.; Westerfield, T. C. & Kohmuench, J. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optical Fiber Sensor Instrumentation for Slagging Coal Gasifiers

Description: Coal gasifier is one of the most promising solutions for clean fossil energy. Refractory thickness monitoring and online real-time temperature measurement is needed for improved reliability and advanced process control for current and future generation power plants. The objective of this program is to design and implement an optical fiber based sensing system that could potentially be used to monitor refractory wall thickness and temperature inside a coal gasifier. For the thickness monitoring,… more
Date: July 19, 2008
Creator: Wang, Anbo & Cooper, Kristie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Digital Manufacturing of Gradient Meshed SOFC Sealing Composites with Self-Healing Capabilities

Description: Solid oxide fuel cells (SOFC) hold great promise for clean power generation. However, high temperature stability and long term durability of the SOFC components have presented serious problems in SOFC technological advancement and commercialization. The seals of the fuel cells are the most challenging area to address. A high temperature gas seal is highly needed which is durable against cracking and gas leakage during thermal cycling and extended operation. This project investigates a novel com… more
Date: December 21, 2007
Creator: Lu, Kathy; Story, Christopher & Reynolds, W.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Dewatering Systems Development

Description: A new fine coal dewatering technology has been developed and tested in the present work. The work was funded by the Solid Fuels and Feedstocks Grand Challenge PRDA. The objective of this program was to 'develop innovative technical approaches to ensure a continued supply of environmentally sound solid fuels for existing and future combustion systems with minimal incremental fuel cost.' Specifically, this solicitation is aimed at developing technologies that can (i) improve the efficiency or eco… more
Date: July 31, 2008
Creator: Yoon, R. H. & Luttrell, G. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Low-Cost Soft-Switched DC/DC Converter for Solid-Oxide Fuel Cells

Description: A highly efficient DC to DC converter has been developed for low-voltage high-current solid oxide fuel cells. The newly developed 'V6' converter resembles what has been done in internal combustion engine that split into multiple cylinders to increase the output capacity without having to increase individual cell size and to smooth out the torque with interleaving operation. The development was started with topology overview to ensure that all the DC to DC converter circuits were included in the… more
Date: March 3, 2009
Creator: Lai, Jason
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CROSSCUTTING TECHNOLOGY DEVELOPMENT AT THE CENTER FOR ADVANCED SEPARATION TECHNOLOGIES

Description: This Technical Progress Report describes progress made on the twenty nine subprojects awarded in the second year of Cooperative Agreement DE-FC26-02NT41607: Crosscutting Technology Development at the Center for Advanced Separation Technologies. This work is summarized in the body of the main report: the individual sub-project Technical Progress Reports are attached as Appendices.
Date: May 15, 2006
Creator: Hull, Christopher E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mine-to-Mill Optimization of Aggregate Production

Description: Mine-to-Mill optimization is a total systems approach to the reduction of energy and cost in mining and mineral processing operations. Developed at the Julius Krutschnitt Mineral Research Centre (JKMRC) in Queensland, Australia, the Mine-to-Mill approach attempts to minimize energy consumption through the optimization of all steps in the size reduction process. The approach involves sampling and modeling of blasting and processing, followed by computer simulation to optimize the operation and d… more
Date: June 1, 2006
Creator: Adel, Greg; Kojovic, Toni & Thornton, Darren
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mine-to-Mill Optimization of Aggregate Production

Description: Mine-to-Mill optimization is a total systems approach to the reduction of energy and cost in mining and processing. Developed at the Julius Krutschnitt Mineral Research Center in Queensland, Australia, the Mine-to-Mill approach attempts to minimize energy consumption through optimization of all steps in the size reduction process. The approach involves sampling and modeling of blasting and processing, followed by computer simulation to optimize the operation and develop alternatives. The most p… more
Date: September 30, 2006
Creator: Adel, Greg; Kojovic, Toni & Thornton, Darren
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Crosscutting Technology Development at the Center for Advanced Separation Technologies

Description: This Technical Progress Report describes progress made on the twenty nine subprojects awarded in the second year of Cooperative Agreement DE-FC26-02NT41607: Crosscutting Technology Development at the Center for Advanced Separation Technologies. This work is summarized in the body of the main report: the individual sub-project Technical Progress Reports are attached as Appendices.
Date: September 30, 2006
Creator: Hull, Christopher E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MODELING AND DESIGN FOR A DIRECT CARBON FUEL CELL WITH ENTRAINED FUEL AND OXIDIZER

Description: The novel molten carbonate fuel cell design described in this report uses porous bed electrodes. Molten carbonate, with carbon fuel particles and oxidizer entrained, is circulated through the electrodes. Carbon may be reacted directly, without gasification, in a molten carbonate fuel cell. The cathode reaction is 2CO{sub 2} + O{sub 2} 4e{sup -} {yields} 2CO{sub 3}{sup =}, while the anode reaction can be either C + 2CO{sub 3}{sup =} {yields} 3CO{sub 2} + 4e{sup -} or 2C + CO{sub 3}{sup =} {yield… more
Date: April 1, 2005
Creator: Kornhauser, Alan A. & Agarwal, Ritesh
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Poc-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning

Description: Numerous advanced coal cleaning processes have been developed in recent years that are capable of substantially reducing both ash- and sulfur-forming minerals from coal. However, most of the processes involve fine grinding and use water as the cleaning medium; therefore, the clean coal products must be dewatered before they can be transported and burned. Unfortunately, dewatering fine coal is costly, which makes it difficult to deploy advanced coal cleaning processes for commercial applications… more
Date: April 30, 2001
Creator: Yoon, R. H.; Luttrell, G. H.; Yan, E. S. & Walters, A. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ESTABLISHMENT OF THE CENTER FOR ADVANCED SEPARATION TECHNOLOGIES

Description: This Technical Progress Report describes progress made on the eight sub-projects awarded in the first year and the five projects awarded in the second year of Cooperative Agreement DE-FC26-01NT41091: Establishment of the Center for Advanced Separation Technologies. This work is summarized in the body of the main report: the individual subproject Technical Progress Reports are attached as Appendices. Due to the time taken up by the solicitation/selection process (approx. six months), the second … more
Date: April 30, 2004
Creator: Rimmer, Hugh W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantifying Silica Reactivity in Subsurface Environments: An Integrated Experimental Study of Quartz and Amorphous Silica to Establish a Baseline for Glass Durability

Description: An immediate EM science need is a reliable kinetic model that predicts long-term waste glass performance. A framework for which the kinetics of mineral-solution reactions can be used to interpret complex silicate glass properties is required to accurately describe the current and future behavior of glasses as synthetic monoliths or natural analogs. Reaction rates and mechanisms are essential elements in deciphering mineral/material reactivity trends within a compositional series or across a mat… more
Date: June 10, 2003
Creator: Dove, Patricia
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CROSSCUTTING TECHNOLOGY DEVELOPMENT AT THE CENTER FOR ADVANCED SEPARATION TECHNOLOGIES

Description: The CAST initiative is comprised of a diverse group of subprojects, most of which are multistage, task-oriented developmental projects that cannot be conveniently categorized by the traditional reporting criteria required by the DOE Uniform Reporting Requirements. For example, several of the projects have required the construction of unique test equipment, others the generation of simulation models, etc., as preliminary tasks in the overall execution of the project. As such, the presentation of… more
Date: May 30, 2004
Creator: Yoon, Roe-Hoan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dense Media Cyclone Optimization Quarterly Technical Progress Report: October-December 2003

Description: All technical project activities have been successfully completed. This effort included (1) completion of field testing using density tracers, (2) development of a spreadsheet based HMC simulation program, and (3) preparation of a menu-driven expert system for HMC trouble-shooting. The final project report is now being prepared for submission to DOE comment and review. The submission has been delayed due to difficulties in compiling the large base of technical information generated by the proje… more
Date: January 15, 2003
Creator: Luttrell, Gerald H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CROSSCUTTING TECHNOLOGY DEVELOPMENT AT THE CENTER FOR ADVANCED SEPARATION TECHNOLOGIES

Description: The U.S. is the largest producer of mining products in the world. In 2003, U.S. mining operations produced $57 billion worth of raw materials that contributed a total of $564 billion to the nation's wealth. Despite these contributions, the mining industry has not been well supported with research and development funds as compared to mining industries in other countries. To overcome this problem, the Center for Advanced Separation Technologies (CAST) was established to develop technologies that … more
Date: January 20, 2005
Creator: Hull, Christopher E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Restoring Sustainable Forests on Appalachian Mined Lands for Wood Products, Renewable Energy, Carbon Sequestration, and Other Ecosystems Services Quarterly Report

Description: The overall purpose of this project is to evaluate the biological and economic feasibility of restoring high-quality forests on mined land, and to measure carbon sequestration and wood production benefits that would be achieved from forest restoration procedures. In this segment of work, our goal was to review methods for estimating tree survival, growth, yield and value of forests growing on surface mined land in the eastern coalfields of the USA, and to determine the extent to which carbon se… more
Date: December 15, 2003
Creator: Aggett, Jonathan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Restoring Sustainable Forests on Appalachian Mined Lands for Wood Products, Renewable Energy, Carbon Sequestration, and Other Ecosystems Services Quarterly Report

Description: The overall purpose of this project is to evaluate the biological and economic feasibility of restoring high-quality forests on mined land, and to measure carbon sequestration and wood production benefits that would be achieved from forest restoration procedures. During the reporting period (October-December 2004) we completed the validation of a forest productivity classification model for mined land. A coefficient of determination (R{sup 2}) of 0.68 confirms the model's ability to predict SI … more
Date: February 15, 2005
Creator: Burger, James A.; Galbraith, J.; Fox, T.; Amacher, G.; Sullivan, J. & Zipper, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ON-LINE SELF-CALIBRATING SINGLE CRYSTAL SAPPHIRE OPTICAL SENSOR INSTRUMENTATION FOR ACCURATE AND RELIABLE COAL GASIFIER TEMPERATURE MEASUREMENT

Description: This report summarizes technical progress over the second six month period of the Phase II program ''On-Line Self-Calibrating Single Crystal Sapphire Optical Sensor Instrumentation for Accurate and Reliable Coal Gasifier Temperature Measurement'', funded by the Federal Energy Technology Center of the U.S. Department of Energy, and performed by the Center for Photonics Technology of the Bradley Department of Electrical and Computer Engineering at Virginia Tech. The outcome of the first phase of … more
Date: November 1, 2003
Creator: Cooper, Kristie; Pickrell, Gary & Wang, Anbo
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Next Generation Extractants for Cesium Separation from High-Level Waste: From Fundamental Concepts to Site Implementation

Description: This project seeks a fundamental understanding and major improvement in cesium separation from high-level waste by cesium-selective calixcrown extractants. Systems of particular interest involve novel solvent-extraction systems containing specific members of the calix[4]arene-crown-6 family, alcohol solvating agents, and alkylamines. Questions being addressed bear upon cesium binding strength, extraction selectivity, cesium stripping, and extractant solubility. Enhanced properties in this regar… more
Date: June 1, 2002
Creator: Moyer, Bruce A.; Bonnesen, Peter V.; Bryan, Jeffrey C.; Engle, Nancy L.; Keever, Tamara J.; Levitskaia, Tatiana G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantifying Silica Reactivity in Subsurface Environments: An Integrated Experimental Study of Quartz and Amorphous Silica to Establish a Baseline for Glass Durability

Description: An immediate EM science need is a reliable kinetic model that predicts long-term waste glass performance. A framework for which the kinetics of mineral-solution reactions can be used to interpret complex silicate glass properties is required to accurately describe the current and future behavior of glasses as synthetic monoliths or natural analogs. Reaction rates and mechanisms are essential elements in deciphering mineral/material reactivity trends within a compositional series or across a mat… more
Date: June 15, 2001
Creator: Dove, Patricia M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Restoring Sustainable Forests on Appalachian Mined Lands for Wood Products, Renewable Energy, Carbon Sequestration, and Other Ecosystems Services Quarterly Report

Description: The overall purpose of this project is to evaluate the biological and economic feasibility of restoring high-quality forests on mined land, and to measure carbon sequestration and wood production benefits that would be achieved from forest restoration procedures. In this quarterly report, we present a preliminary comparison of the carbon sequestration benefits for two forest types used to convert abandoned grasslands for carbon sequestration. Annual mixed hardwood benefits, based on total stand… more
Date: December 18, 2003
Creator: Burger, J.; Galbraith, J.; Fox, T.; Amacher, G.; Sullivan, J. & Zipper, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

24-Channel Geophone Array for Horizontal or Vertical Boreholes Quarterly Technical Report: January-March 2003

Description: This report describes the technical progress on a project to design and construct a multichannel geophone array that improves tomographic imaging capabilities in both surface and underground mines. Especially important in the design of the array is sensor placement. One issue related to sensor placement is addressed in this report: the method for clamping the sensor once it is emplaced in the borehole. If the sensors (geophones) are not adequately coupled to the surrounding rock mass, the resul… more
Date: June 1, 2003
Creator: Westman, Erik C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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