Journal
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
Volume 31, Issue 2, Pages 112-123Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/19392699.2010.549383
Keywords
Factorial analysis; Harz jig; Interaction effect; t-test; Yates' analysis
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The jigging studies of a synthetic binary mixture of quartz and coal were carried out. The variables studied were the particle size, bed thickness, number of strokes per minute, and water level. Experiments were carried out using 24 full factorial design. The main and interaction effects on quartz recovery were evaluated using Yates' analysis. The optimum jigging condition was found by the method of steepest ascent. A product with 81.81% quartz and 97.74% recovery in the lower layer was obtained at the following optimum conditions: particle size of 3.907mm, bed thickness of 1.87cm, water level of 4.41cm, and 234.3 strokes per minute.
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