Observations of freeze layer formation during heat balance shifts in cryolite-based smelting bath
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Jingjing Liu
Abstract
The responses of a cryolite-based bath to shifts in heat input/output balance have been investigated in previous work. The effect of such heat balance shifts on bath superheat and on the frozen ledge, protecting the cell walls, is of most interest and has been investigated primarily in an experimental analogue to a smelting cell. In this paper, the microstructure and morphology of the freeze itself, as a function of the applied heat balance shift is investigated. Different layers were detected in the freeze, showing that both the freeze morphology and the phases present vary depending on bath conditions. The phase composition change was also analysed and compared with the bulk bath in different thermal states, created when the heat balance was shifted. Based on the investigation, a freeze growth mechanism is proposed.
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Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- The thermodynamic stability induced by solute co-segregation in nanocrystalline ternary alloys
- A general approach on the modelling of incubation in ferrite transformation using non-isothermal kinetics data for 22MnB5 steel
- Effect of aging on microstructure and mechanical properties of ZnAl15Cu1 alloy for wrought applications
- Deformation behavior and texture randomization of Mg–Zn–Gd alloys reinforced with icosahedral quasicrystal
- Atomic mobility in liquid and fcc Al–Si–Mg–RE (RE = Ce, Sc) alloys and its application to the simulation of solidification processes in RE-containing A357 alloys
- Reactive wetting of Ti-6Al-4V alloy by molten Al 4043 and 6061 alloys at 600–700°C
- Laser surface treatment of S235JRC carbon steel with Co2B nanocrystals
- Research and analysis of stress distribution in multilayers of coated tools
- Observations of freeze layer formation during heat balance shifts in cryolite-based smelting bath
- Synthesis and thermo-mechanical investigation of macrodiol-based shape memory polyurethane elastomers
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