Production of Illinois base compliance coal using enhanced gravity separation. [Quarterly] technical report, December 1, 1993--February 28, 1994
- Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mining Engineering
Illinois Basin coal often contains a significant portion of finely dispersed pyrite. Most of the free pyrite particles exist in the fine size fractions, which are generally treated using froth flotation. An inherent problem of their froth flotation process is the inefficient treatment of middling particles containing a small amount of coal on their surface. On the other hand, gravity-based processes can effectively remove middling particles containing only a small amount of coal. Falcon Concentrators Inc. and Knelson Gold Concentrators Inc. have developed full-scale, enhanced gravity separators for the treatment of heavy minerals. This project will evaluate the potential of using these concentrators to de-ash and de-sulfurize Illinois coal fines. During this reporting period, sample characterization was completed and initial tests were conducted using the Falcon Concentrator. A 28 mesh {times} 0 flotation feed sample was collected from a local coal preparation plant treating the Illinois No. 6 seam coal. This sample was characterized on a size-by-size basis for sulfur, ash, and BTU content. A release analysis was conducted to determine the separation performance that can be achieved by froth flotation. The initial Falcon Concentrator tests were conducted using both water and the flotation feed to provide a preliminary knowledge base for its operational characteristics.
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 10154231
- Report Number(s):
- DOE/PC/92521--T144; ON: DE94012571; BR: AV0100000/AV0102000
- Country of Publication:
- United States
- Language:
- English
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