The effect of demagnetisation and ore contamination on the viscosity of the medium in a dense medium cyclone plant

Napier-Munn, T. J. and Scott, I. A. (1990) The effect of demagnetisation and ore contamination on the viscosity of the medium in a dense medium cyclone plant. Minerals Engineering, 3 6: 607-613. doi:10.1016/0892-6875(90)90005-V


Author Napier-Munn, T. J.
Scott, I. A.
Title The effect of demagnetisation and ore contamination on the viscosity of the medium in a dense medium cyclone plant
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
1872-9444
Publication date 1990
Sub-type Article (original research)
DOI 10.1016/0892-6875(90)90005-V
Open Access Status
Volume 3
Issue 6
Start page 607
End page 613
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Formatted abstract
The influence of medium viscosity on dense medium cyclone performance, and the influence of various factors on medium viscosity, are briefly reviewed. Experimental work was carried out in the DM cyclone preconcentration plant at Mount Isa Mines to investigate the effect of using demagnetising coils to reduce the viscosity of the circulating ferrosilicon medium. The effect on viscosity of natural fine contamination from the ore, including magnetic pyrrhotite, was also studied by replacing the medium charge with fresh medium and then allowing it to become re-contaminated. The viscosity of the circulating medium was monitored over a range of operating densities using an on-line viscometer.

It was found, as expected, that operation of the demagnetising coil significantly reduced viscosity, and that the viscosity of the contaminated medium was much higher than that of the fresh medium. It is recommended that demagnetising coils be considered for all DM cyclone plants operating with ferrosilicon media.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Julius Kruttschnitt Mineral Research Centre Publications
 
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Created: Thu, 09 Apr 2015, 11:08:21 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre