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Monitoring Sintering Burn-Through Point Using Infrared Thermography
Department of Computer Science and Engineering, University of Oviedo, Campus de Viesques, Gijón, Asturias 33204, Spain
* Author to whom correspondence should be addressed.
Received: 27 June 2013; in revised form: 5 August 2013 / Accepted: 8 August 2013 / Published: 9 August 2013
Abstract: Sintering is a complex industrial process that applies heat to fine particles of iron ore and other materials to produce sinter, a solidified porous material used in blast furnaces. The sintering process needs to be carefully adjusted, so that the combustion zone reaches the bottom of the material just before the discharge end. This is known as the burnthrough point. Many different parameters need to be finely tuned, including the speed and the quantities of the materials mixed. However, in order to achieve good results, sintering control requires precise feedback to adjust these parameters. This work presents a sensor to monitor the sintering burn-through point based on infrared thermography. The proposed procedure is based on the acquisition of infrared images at the end of the sintering process. At this position, infrared images contain the cross-section temperatures of the mixture. The objective of this work is to process this information to extract relevant features about the sintering process. The proposed procedure is based on four steps: key frame detection, region of interest detection, segmentation and feature extraction. The results indicate that the proposed procedure is very robust and reliable, providing features that can be used effectively to control the sintering process.
Keywords: sintering burn-through point; infrared thermography; active contour segmentation; feature extraction
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Usamentiaga, R.; Molleda, J.; Garcia, D.F.; Bulnes, F.G. Monitoring Sintering Burn-Through Point Using Infrared Thermography. Sensors 2013, 13, 10287-10305.
Usamentiaga R, Molleda J, Garcia DF, Bulnes FG. Monitoring Sintering Burn-Through Point Using Infrared Thermography. Sensors. 2013; 13(8):10287-10305.
Usamentiaga, Rubén; Molleda, Julio; Garcia, Daniel F.; Bulnes, Francisco G. 2013. "Monitoring Sintering Burn-Through Point Using Infrared Thermography." Sensors 13, no. 8: 10287-10305.