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Development of enhanced sulfur rejection processes. Second quarterly technical progress report, January 1, 1993--March 31, 1993

Description: Research at Virginia Tech led to the development of two complementary concepts for improving the removal of inorganic sulfur from many eastern US coals. These concepts are referred to as Electrochemically Enhanced Sulfur Rejection (EESR) and Polymer Enhanced Sulfur Rejection (PESR). The EESR process uses electrochemical techniques to suppress the formation of hydrophobic oxidation products believed to be responsible for the floatability of coal pyrite. The PESR process uses polymeric reagents t… more
Date: June 14, 1993
Creator: Yoon, R. H.; Luttrell, G.; Adel, G. & Richardson, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development, testing, and demonstration of an optimal fine coal cleaning circuit. Task 5: Evaluation of bench-scale test results and equipment selection for in-plant pilot tests

Description: The overall objective of this research effort is to improve the efficiency of fine coal flotation in preparation plants above that of currently used conventional cells. In addition to evaluating single-stage operation of four selected advanced flotation devices, the project will also evaluate them in two-stage configurations. The project is being implemented in two phases. Phase 1 comprises bench-scale testing of the flotation units, and Phase 2 comprises in-plant, proof-of-concept (POC), pilot… more
Date: December 14, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pyrite surface characterization and control for advanced fine coal desulfurization technologies

Description: The objective of this project is to conduct extensive studies on the surface reactivity and surface hydrophobicity of coal-pyrites using various surface characterization techniques and to correlate the alteration of the coal-pyrite surface with the efficiency of pyrite rejection in coal flotation. The flotation characteristics of coal-pyrites under various conditions was studied and compared with ore-pyrite and coal to determine the causes of pyrite rejection difficulties in coal flotation. Bot… more
Date: July 14, 1992
Creator: Wang, Xiang-Huai; Leonard, J. W.; Parekh, B. K.; Jiang, Chengliang & Raichur, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pyrite surface characterization and control for advanced fine coal desulfurization technologies. Seventh quarterly technical progress report, March 1, 1992--May 31, 1992

Description: The objective of this project is to conduct extensive studies on the surface reactivity and surface hydrophobicity of coal-pyrites using various surface characterization techniques and to correlate the alteration of the coal-pyrite surface with the efficiency of pyrite rejection in coal flotation. The flotation characteristics of coal-pyrites under various conditions was studied and compared with ore-pyrite and coal to determine the causes of pyrite rejection difficulties in coal flotation. Bot… more
Date: July 14, 1992
Creator: Wang, Xiang-Huai; Leonard, J. W.; Parekh, B. K.; Jiang, Chengliang & Raichur, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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