Analysis of effects of coal enrichment in jigs at changing grain composition of the feed
Journal Title: Mining – Informatics, Automation and Electrical Engineering - Year 2016, Vol 526, Issue 2
Abstract
One of the basic coal preparation processes is coal preparation in water pulsating jigs. The efficiency of coal preparation depends on the washability of the raw coal feed and the shape of partition curves which, in turn, depend on the grain composition of the feed. Thus, when the grain composition changes, it is necessary to change the partition density of the jig (by changing the reception intensity of the undersized product) [2, 6]. The authors of the article attempted to estimate, tentatively, how an on-line analysis of the feed grain composition, in technological configurations with one or two jigs that successively prepare the concentrates, can improve the preparation efficiency with respect to the dynamic properties of the jig. The jig is an inertial object with time delay – transport delay. However, preparation processes of minerals have a non-linear character [4, 12] – equivalent parameters of the object are different for positive and negative changes in the set value. Dynamic effects of preparation were presented with respect to changes in the grain composition.
Authors and Affiliations
Joachim Pielot, Wojciech Pielucha
Keywords
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