Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 31, Issue 15, Pages 1925-1933Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/1743284715Y.0000000052
Keywords
Metal entrainment; Slag; Spinel; Copper; Wetting
Funding
- Agency for Innovation by Science and Technology in Flanders (IWT) [110541]
- Umicore
- Research Fund Flanders (FWO)
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Metal droplet losses in slags are an important issue in copper industry. One significant aspect that promotes the entrainment of metal droplets in the slag is their attachment to spinel solids. In the present study, the wetting behaviour of copper alloys on spinel substrates has been investigated in the presence and absence of a slag phase. At first, the attachment was investigated using a synthetic slag containing spinel particles. Microstructural analysis of quenched slag reveals the presence of microdroplets sticking onto a surface of the spinel particles. Second, the metal-spinel interaction was investigated using the sessile drop technique. Wetting angle measurements were performed between Cu-Ag alloys and MgAl2O4 substrates. A non-wetting behaviour between the alloys and substrates was observed. The results suggest that the oxygen partial pressure and the amount of Ag in the alloy both influence the wetting behaviour.
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