Pilot Scale Single Stage Fine Coal Dewatering and Briquetting Process. Technical report, March 1, 1996 - May 31, 1996
- Missouri Univ., Rolla, MO (United States). Dept. of Mining Engineering
- Southern Illinois Univ., Carbondale, IL (United States)
- Illinois Clean Coal Inst., Carterville, IL (United States)
The primary goal for this ICCI coal research project is to effectively liberate coal from fnely disseminated minerals for Illinois Basin coal by using fine grinding and cleaning processes. However, because of the large surface area generated during the cleaning processes, it is difficult and uneconomic for conventional techniques to dewater the coal fines. In addition, these coal fine pose transportation, storage and handling problems at cleaning and utility facilities. The objective of this research is to combine dewatering and briquetting processes into a single stage operation that will solve the problems mentioned above. To build on the promising results obtained from the previous studies, a pilot scale commercial briquetting machine was used to evaluate this technique. The primary objective of the research in this reporting period is to determine the effectiveness of a single stage dewatering and briquetting technique using a commercial briquetting device. Two types of samples were prepared and the results of the -28 x 100 mesh samples are presented in this report. Modifications were made to the machine in an attempt to solve the back drainage problem. A total of six experiments were conducted and the results indicate that water resistance of coal briquettes increased as curing time increased. However, due to a deficiency of fine particles to bridge the gaps between the coarse particles, the wear resistance of the products declined. Also, at high roll speeds and compaction pressures, the coal briquettes produced tended to have higher moisture content and lower strength. On the other hand, at high feed rates, because of the screw extrusion effect, coal briquettes were produced with lower moisture content and higher strengths.
- Research Organization:
- USDOE Pittsburgh Energy Technology Center, PA (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 467809
- Report Number(s):
- DOE/PC/92521--T286; ON: DE97051791
- Country of Publication:
- United States
- Language:
- English
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