Abstract
The majority of steels produced by continuous casting is fully Al‐killed. Ceramic foam and multi hole filters have been tested so far in laboratory and small scale production experiments to lower the total oxygen content of steel melts. The use of such filters in tundishes has hitherto been limited by their insuffiicient mechanical and thermal durability over extended periods. Owing to their small pore sizes, these filters allow a high inclusion separation efficiency, but a limited mass throughput. Therefore a technique is looked for to extract non‐metallic inclusions efficiently from the melt at higher mass throughputs. Further ideas led to a new ceramic inclusion separator which has been tested in small scale experimental runs. To verify the flow and separation process, a water model has been built and numerical modelling was applied. The results of the molten steel experiments, the water model and the mathematical modelling are described and compared to each other. For the small scale it is confirmed that the new experimental device may yield high filtration efficiencies.
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