Among the parameters involved in the production of aluminiumAluminium alloys, particularly demanding in terms of regulation are those involved in drossDross skimming. To reduce the aluminium lossesAluminium losses and maintain the uniform qualityUniform quality of the skimming, the skimming depth (drossDross removal) should be limited, as much as possible, to near the interface between the drossDross layer and the molten metal. The purpose of this work was the development of an automatic skimmingAutomatic skimming procedure. The position of the skimming spoon was guided by a continuous measurement of the temperature gradient across the drossDross layer, with the thermocouples positioned on its bottom edge. The efficiency of this novel procedure was validated by continuous tracing of the specific amount of skimmed drossDross (SASD)—the mass of skimmed drossDross per mass of produced molten metal. Although the SASD depends on several parameters (alloy composition, applied fluxes, as well as melting/skimming parameters), it was recognized as a valuable quantitative indicator of the quality and the efficiency of the melting procedure as well as of the quality of the molten metal produced.
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- Automatic Skimming Procedure for Reducing Aluminium Losses and Maintaining the Uniform Quality of the Molten Metal
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