An evaluation of fine coal flotation at the Chaili Coal Washery
- China Univ. of Mining and Technology, Beijing (China). Mineral Processing Research Inst.
- Zaozhuang Coal Mine Administration, Xue Cheng, Shandong (China). Chaili Coal Preparation Plant
- Center for Coal and Minerals Processing, Blacksburg, VA (United States)
- Control International, Inc., Salt Lake City, UT (United States)
The potential application of flotation for the treatment and processing of a fine-particle coal stream was investigated for the Chaili Coal Washery of the Zaozhuang Coal Mine Administration, Shandong Province, China. A goal of the test work was to evaluate the application of the Microcel{trademark} flotation column and compare its performance to conventional flotation. Small-scale flotation tests were performed in the laboratory and on-site with fine coal slurry samples from the plant thickener underflow, i.e., the washing plant`s undersized reject material. Flotation tests were conducted on-site with a 7.6-cm diameter Microcel{trademark} column and with small-scale conventional cells. Column flotation tests were performed to determine a recovery-grade relationship for the fine coal feed, which contained about 24% ash, and to obtain sufficient data to enable scale-up to a large-diameter unit. A primary objective was to establish the maximum throughput capacity of a Microcel flotation column while operating to produce a clean coal product with ash content of 7.5--7.8%. Results of the test work indicate that this product quality could be achieved at feed rates of 15--19 tph to a 3-m diameter Microcel flotation column. Lower ash products, i.e. 5--7% ash, were obtained but at lower column throughput capacities. Comparative flotation tests, conducted with conventional flotation cells, indicated that a product ash of only 8% or greater was achieved in a single-stage test.
- OSTI ID:
- 276670
- Report Number(s):
- CONF-9510120-; ISBN 0-87335-141-X; TRN: IM9636%%381
- Resource Relation:
- Conference: 19. international mineral processing congress, San Francisco, CA (United States), 22-27 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 19. international mineral processing congress: Flotation operating practices and fundamentals. Volume 3; PB: 332 p.
- Country of Publication:
- United States
- Language:
- English
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