The effect of jigging time and air cycle on bed stratification in a pilot scale Baum jig

Rong R.X. and Lyman G.J. (1992) The effect of jigging time and air cycle on bed stratification in a pilot scale Baum jig. Fuel, 71 1: 115-123. doi:10.1016/0016-2361(92)90201-X


Author Rong R.X.
Lyman G.J.
Title The effect of jigging time and air cycle on bed stratification in a pilot scale Baum jig
Journal name Fuel   Check publisher's open access policy
ISSN 0016-2361
Publication date 1992-01-01
Sub-type Article (original research)
DOI 10.1016/0016-2361(92)90201-X
Open Access Status
Volume 71
Issue 1
Start page 115
End page 123
Total pages 9
Subject 1605 Policy and Administration
2102 Curatorial and Related Studies
2103 Historical Studies
Abstract A highly instrumented and controlled pilot jig was constructed to study water motion behaviour or oscillation with the object of optimizing bed stratification of coal washing jigs. Durable synthetic material, colour coded for density, was used as the bed material in a series of 114 experiments. The bed was fully analysed layer by layer for size and density distribution. It was found that jigging time is a very significant parameter affecting the bed stratification. In general, bed stratification improves quickly up to a jigging time of 180 s, and thereafter more slowly. When the jigging time exceeds 300 s, the bed is in a state of dynamic equilibrium for material coarser than 8 mm; however, the finer particles (< 8mm) need more time to achieve such a state. To improve the bed stratification, operating parameters should be adjusted to generate suitable air and water behaviour in the jig. A cycle with a long inlet period (199-220 °), which is seldom used at present, appears to provide such behaviour. Improvement of bed stratification by using an appropriate air cycle will increase the separation efficiency and yield of product in coal washing jigs.
Keyword Baum jig
coal
stratification
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 14 Jun 2016, 16:37:08 EST by System User