Investigation of freeze lining in copper-containing slag systems: part III. High-temperature experimental investigation of the effect of bath agitation

Fallah-Mehrjardi, Ata, Hayes, Peter C. and Jak, Evgueni (2013) Investigation of freeze lining in copper-containing slag systems: part III. High-temperature experimental investigation of the effect of bath agitation. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 44 6: 1337-1351. doi:10.1007/s11663-013-9925-6


Author Fallah-Mehrjardi, Ata
Hayes, Peter C.
Jak, Evgueni
Title Investigation of freeze lining in copper-containing slag systems: part III. High-temperature experimental investigation of the effect of bath agitation
Journal name Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science   Check publisher's open access policy
ISSN 1073-5615
1543-1916
Publication date 2013-12-01
Year available 2013
Sub-type Article (original research)
DOI 10.1007/s11663-013-9925-6
Open Access Status Not Open Access
Volume 44
Issue 6
Start page 1337
End page 1351
Total pages 15
Place of publication New York, United States
Publisher Springer New York LLC
Language eng
Abstract Freeze-lining technologies have been employed to protect the cooling walls of reactors from chemically aggressive molten reactants. To date, the designs of freeze linings for pyrometallurgical reactors have been based on the basic assumption that the interface between the deposit and the bath remains at the liquidus temperature of the bulk liquid. There is, however, increasing evidence that interface temperature between stagnant deposit and bath is less than the liquidus of the bulk liquid. A previous study also demonstrated that the effects of bath chemistry need to be taken into account in freeze-lining designs. To investigate the fundamental processes involved in the formation and stability of the deposit, experimental laboratory studies have been undertaken in the Cu-Fe-Si-Al-O slag system in equilibrium with metallic copper using an air-cooled probe technique. In the current study, the effects of bath agitation on the microstructure, morphologies of the phases, and formation of various layers across the freeze-lining deposit were studied at steady-state conditions. It appears that the changes in the fluid flow pattern through changes in shear intensities result in corresponding changes in the deposit microstructure, formation of the sealing primary phase layer, thus influencing the interface temperature between freeze-lining deposit and the liquid bath.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2014 Collection
 
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