One of the biggest problems in the metallurgical and foundry industries is the large quantity of dust generated during production processes. The most important is furnace dust created when the molten metal is prepared and subsequently sucked out by the dust removal system. At the Department of Foundry, experiments using the pneumatic injection method were carried out to utilize these kinds of materials and some results were successfully introduced into industrial applications. The results of dust injection into cupola and metallurgical EAFs (for slag foaming) were presented in this paper. The ideas behind the industrial set-ups, the process parameters, and the results obtained are described. The paper proves that pneumatic the injection technique could and should be continuously considered as an effective method for waste dust utilization.
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