In ladle metallurgical processing,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass exchanges occur by the way of a redox reaction.The mass transfer associated wi...In ladle metallurgical processing,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass exchanges occur by the way of a redox reaction.The mass transfer associated with such reaction is strongly dependent on the agitation of each phase as well of their interface.We use an experimental system able to melt separately metal and salt.Once these elements are molten a sampling system is used.The experimenter chooses the sampling times.Finally,the collected samples and the final metal and salt ingots are analyzed by Inductively Coupled Plasma Atomic Emission Spectroscopy(ICP-AES).During the experiments,both temperature and,intensity and frequency of the inducting current,are measured.Comparisons on experimental results are done varying the induction as well as the transferred element.展开更多
In ladle metallurgical process,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass transfers occur thanks to redox reactions.Such mass transfers are strongly depend...In ladle metallurgical process,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass transfers occur thanks to redox reactions.Such mass transfers are strongly dependent on the stirring of each phase.By means of induction,a cold crucible reactor can melt,confine and stir,without any physical contact,liquids at very high temperature,with opportunities for continuous treatment.To work on metal/salt couples of interest to industry,we built a facility to control and measure the full kinetic transfer of a pollutant from one layer to another.A numerical simulation of the experimental reactor is presented here.We calculate the flows in both salty and metallic layers taking into account of all the present phenomena in each liquid phase(i.e.electromagnetic stirring, buoyancy,turbulence)as well as at the interface(i.e electromagnetic shaping,viscous shear driving).The implementation of the couplings needed for the complete simulation is presented.A focus is done on the numerical description of the shear stress near the interface.Stationary flows for two inductor positions complete this short article.展开更多
基金Item Sponsored by Framework of a CNRS-CEA Program on the Use of Molten Salts In Nuclear Applications (PCR ANSF) for the Reprocessing of Nuclear Reactor Salt Operating on a Cycle Th/U
文摘In ladle metallurgical processing,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass exchanges occur by the way of a redox reaction.The mass transfer associated with such reaction is strongly dependent on the agitation of each phase as well of their interface.We use an experimental system able to melt separately metal and salt.Once these elements are molten a sampling system is used.The experimenter chooses the sampling times.Finally,the collected samples and the final metal and salt ingots are analyzed by Inductively Coupled Plasma Atomic Emission Spectroscopy(ICP-AES).During the experiments,both temperature and,intensity and frequency of the inducting current,are measured.Comparisons on experimental results are done varying the induction as well as the transferred element.
基金Item Sponsored by the CNRS/CEA Program on the Use of Molten Salts in Nuclear Applications (PCR ANSF) for Reprocessing of Nuclear Reactor Salt Operating on a Cycle Th/U
文摘In ladle metallurgical process,two liquid layers,a metallic layer below a salty or oxide layer,are separated by an interface where mass transfers occur thanks to redox reactions.Such mass transfers are strongly dependent on the stirring of each phase.By means of induction,a cold crucible reactor can melt,confine and stir,without any physical contact,liquids at very high temperature,with opportunities for continuous treatment.To work on metal/salt couples of interest to industry,we built a facility to control and measure the full kinetic transfer of a pollutant from one layer to another.A numerical simulation of the experimental reactor is presented here.We calculate the flows in both salty and metallic layers taking into account of all the present phenomena in each liquid phase(i.e.electromagnetic stirring, buoyancy,turbulence)as well as at the interface(i.e electromagnetic shaping,viscous shear driving).The implementation of the couplings needed for the complete simulation is presented.A focus is done on the numerical description of the shear stress near the interface.Stationary flows for two inductor positions complete this short article.
