Knelson concentrator
From Wikipedia, the free encyclopedia
 |
This article does not cite any references or sources. (March 2008) Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. |
 |
All or part of this article may be confusing or unclear. Please help clarify the article. Suggestions may be on the talk page. (March 2008) |
| This article may not meet the general notability guideline or one of the following specific guidelines for inclusion on Wikipedia: Biographies, Books, Companies, Fiction, Music, Neologisms, Numbers, Web content, or several proposals for new guidelines. If you are familiar with the subject matter, please expand or rewrite the article to establish its notability. The best way to address this concern is to reference published, third-party sources about the subject. If notability cannot be established, the article is more likely to be considered for redirection, merge or ultimately deletion, per Wikipedia:Guide to deletion. This article has been tagged since March 2008. |
 |
This article or section is in need of attention from an expert on the subject. WikiProject Mining may be able to help recruit one. |
Knelson concentrators utilise the principles of a centrifuge in order to create an enhanced gravity effect upon a fluidised bed of particles to concentrated dense minerals. The Knelson concentrator often operates as a batch process however new models operate in a continuous or semi-continuous mode. Feed material is injected into the centre of a cone shaped bowl which is rotated at high speed. The slurry contacts the base plate of the vessel and as result of centripetal acceleration the material is thrust upward and the heavier mineral particles (usually the mineral of economic value) are concentrated at the outermost extremities of the concentric grooves that line the inner perimeter of the vessel. These grooves are subjected to a series of tangential water inlet's known as fluidising water ports. These ports maintain a fluidised bed of particles within the grooves in which heavy mineral particles can be concentrated. The heavy mineral particles are concentrated via a number of mechanisms including differential hindered settling, consolidated trickling and separation based on differential initial acceleration.
