Dynamics and control of solidification of molten metal flows |
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| Authors: | A R Firth N B Gray A K Kyllo G K Williams |
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| Affiliation: | (1) Iron Ore Processing, CSIRO Minerals, 1670 New South Wales, Australia;(2) the G.K. Williams Cooperative Research Centre for Extractive Metallurgy the Department of Chemical Engineering, The University of Melbourne, 3010 Victoria, Australia;(3) Cooperative Research Centre for Extractive Metallurgy the Department of Chemical Engineering, The University of Melbourne, 3010 Victoria, Australia |
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| Abstract: | A solidified layer on the inside of a cooled flow channel can be used to control the flow rate of molten material through
that channel. This concept can be used for flow rate control of molten furnace products in the metallurgical industry. In
this study, internal solidification of molten metal flows has been modeled mathematically for both steady-state and dynamic
cases. The model predicted solidified layer thickness and metal flow rate. Experimental verification of the mathematical model
was obtained using molten tin. Novel design features of the experimental apparatus included the use of boiling heat transfer
and the vertical mounting of the cooling section. Engineering knowledge regarding the design, operation, and control of a
pilot scale (24 kg/s) molten metal circuit was obtained during the construction, commissioning, and operation of the experimental
apparatus. Experimental results for tin flow rate from the experimental apparatus were within experimental error of the predictions
of the mathematical model. |
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