Flotation of hydrophobic flocculated coal for ash rejection
- Univ. of Science and Technology, Beijing (China). Coll. of Resources Engineering
In order to remove much more ash from the coal slurry of Tongshan coal washing plant and obtain high quality clean coal, the flotation of hydrophobic flocculated coal is studied to replace the conventional flotation.The main parameters of affecting this process such as the duration and intensity of the agitation, the amount and type of dispersant and nonpolar oil are investigated. The new process has been used to treat the coal slurry of 24.22% ash content, and the cleaned coal of 12.52% ash content with 86.58% weight recovery was obtained, compared to that of 17.78% ash content with 86.01% weight recovery by the conventional flotation. It is obvious that the flotation of hydrophobic flocculated coal is an efficient method to coal slurry beneficiation.
- OSTI ID:
- 257162
- Report Number(s):
- CONF-950952--
- Country of Publication:
- United States
- Language:
- English
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