Journal
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
Volume 41, Issue 2, Pages 108-116Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/19392699.2018.1464001
Keywords
Spirals; dense-medium cyclones; fine coal; separation performance; Fuerstenau upgrading curves
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Funding
- Fundamental Research Funds for the Central Universities [2017CXNL04]
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This study compared the performance of spiral separators and DMCs in separating fine coal, showing that DMCs outperformed in terms of combustible recovery and yield.
Spiral separators and dense-medium cyclones (DMCs) are widely used for separation of -1 + 0.125 mm fine coal. In this study, testing was carried out using -1 + 0.125 mm fine coal with low near density material to produce a concentrate, using both a spiral and DMC. Clean coal with 8.31% ash content was obtained with the spiral at 37.39% yield, 47.76% combustible recovery and 0.150 Ep value. For the DMC, the combustible recovery of clean coal at the ash of 8.31% ash was improved to 80.84% at 62.98% yield, and 0.118 Ep value. The advantage of the DMC is further proved by analysis using Fuerstenau upgrading curves.
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