Plant practices in fine coal column flotation
- Pittston Coal Management Co., Lebanon, VA (United States)
- Virginia Polytechnic Institute and State Univ., Blacksburg, VA (United States). Dept. of Mining and Minerals Engineering
Five 3 m (10 ft) diameter Microcel{trademark} flotation columns were installed at Clinchfield Coal Company`s Middle Fork preparation facility in order to reduce product ash and increase recovery and plant capacity. The Middle Fork facility is utilized for the recovery of fine coal from a feed stream that consists primarily of 1.5 mm x 0 material. The columns replaced conventional flotation cells for the treatment of the minus 150 {micro}m fraction while spirals are used to upgrade the plus 150 {micro}m material in the plant feed. The addition of the column flotation circuit resulted in an increase in plant capacity in excess of 20 percent while reducing the flotation product ash content by approximately 7 percentage points. Flotation circuit combustible recovery wa increased by 17 percentage points. This paper discusses circuit design, commissioning, and sparging system design. Circuit instrumentation, level control, reagent system control, performance comparisons with conventional flotation, and general operating procedures are also discussed.
- OSTI ID:
- 110019
- Report Number(s):
- CONF-950002-; ISBN 0-87335-130-4; TRN: IM9543%%321
- Resource Relation:
- Conference: International symposium on high efficiency coal preparation, Littleton, CO (United States), 1995; Other Information: PBD: 1995; Related Information: Is Part Of High efficiency coal preparation: An international symposium; Kawatra, S.K. [ed.] [Michigan Technological Univ., Houghton, MI (United States)]; PB: 465 p.
- Country of Publication:
- United States
- Language:
- English
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