Development of the chemical and electrochemical coal cleaning process. Technical progress report, October 1, 1991--December 31, 1991

Technical Report · Tue Dec 31 04:00:00 EST 1991

DOI:https://doi.org/10.2172/10139264· OSTI ID:10139264

Basilio, C I; Yoon, Roe-Hoan

The continuous testing of the Chemical and Electrochemical Coal Cleaning (CECC) bench-scale unit (Task 6) was completed successfully in this quarter using Middle Wyodak and Elkhorn No. 3 coal samples. The CECC unit was run under the optimum conditions established for these coal samples in Task 4. For the Middle Wyodak coal, the ash content was reduced from 6.96% to as low 1.61%, corresponding to an ash rejection (by weight) of about 83%. The ash and sulfur contents of the Elkhorn No. 3 coal were reduced to as low as 1.8% and 0.9%. The average ash and sulfur rejections were calculated to be around 84% and 47%. The CECC continuous unit was used to treat -325 mesh Elkhorn No. 3 coal samples and gave ash and sulfur rejection values of as high as 77% and 66%. In these test, the clean -325 mesh coal particles were separated from the liberated mineral matter through microbubble column flotation, instead of wet-screening.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Mining and Minerals Engineering
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-87PC79892
• OSTI ID: 10139264
• Report Number(s): DOE/PC/79892--T19; ON: DE92013353
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300
010402
ASHES
BENCH-SCALE EXPERIMENTS
COAL
COAL PREPARATION
DESULFURIZATION
FLOTATION
PREPARATION
PROGRESS REPORT
PURIFICATION AND UPGRADING
PYRITE
REMOVAL
SUBBITUMINOUS COAL