Nickel, lead and antimony distributions between ferrous calcium silicate slag and copper at 1300ºC

Kaur, R, Swinbourne, D and Nexhip, C 2009, 'Nickel, lead and antimony distributions between ferrous calcium silicate slag and copper at 1300ºC', Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, vol. 118, no. 2, pp. 65-72.


Document type: Journal Article
Collection: Journal Articles

Title Nickel, lead and antimony distributions between ferrous calcium silicate slag and copper at 1300ºC
Author(s) Kaur, R
Swinbourne, D
Nexhip, C
Year 2009
Journal name Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
Volume number 118
Issue number 2
Start page 65
End page 72
Total pages 8
Publisher Maney Publishing
Abstract Ferrous calcium silicate (FCS) slag has been proposed as a suitable slag system for continuous copper converting. However, there is little information on the important properties of FCS slag and this must be addressed before such a slag can be properly evaluated for implementation. In this work the slag/metal distribution ratios of lead, antimony and nickel between FCS slag and copper were measured at 1300ºC and an oxygen partial pressure of 10-6 atmosphere. They were found to have values of 0-93, 0-54 and 0-98 respectively. These distribution ratios were compared to reported values for calcium ferrite slag and iron silicate slags, both currently used for continuous copper converting, and predicted values for FCS slag under the same conditions. Ferrous calcium silicate slag was found to be a little more than twice as good as calcium ferrite slag at absorbing lead oxide but very similar in its ability to absorb antimony and nickel oxides. However, it was almost five times poorer than iron silicate slag for absorbing lead oxide, a little poorer for nickel oxide but almost four times better for antimony oxide. The activity coefficients of NiO, PbO and SbO1.5 in FCS slag were also calculated and found to be 4-5, 1-4 and 0-6 respectively. In terms of minor element distribution behaviour only, it is concluded that FCS slag warrants closer examination as a replacement for calcium ferrite and iron silicate slags in continuous copper converting.
Keyword(s) Ferrous calcium silicate slag
FCS slag
calcium ferrite slag
iron silicate slags
continuous copper converting
slag/metal distribution ratios
copper
lead
antimony
nickel
oxygen partial pressure
DOI - identifier 10.1179/174328509X383890
Copyright notice © 2009 Institute of Materials.
ISSN 0371-9553
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