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- W2035506877 abstract "The operation of many mineral and metallurgical processing plants is based on reactions that involve mass and heat transfers. The control of these processes implies the use of several sensors to monitor composition, tonnage, temperature and other strategic variables. Although several sensors could be installed for the control of a process, some may not be available due to their price and inability to sustain the harsh conditions prevailing in the plant. A data reconciliation technique provides a way to estimate, from the available measurements and process models, these unmeasured variables. Estimated variables from a data reconciliation algorithm can then be used for control, optimization or inventory purposes. This paper describes the application of a data reconciliation technique based on mass and energy balances for the estimation of unmeasured gas flow rates and pellet temperatures in an iron oxide pellet induration furnace.La réconciliation de données est une technique reconnue pour estimer l’état de variables non mesurées, et quelques fois non mesurables, à partir d’un modèle de procédé et de mesures d’autres variables fournies en continu par des capteurs. Les états estimés des variables non mesurées et non disponibles peuvent être utilisés dans des stratégies de commande automatique ou encore pour effectuer de l’optimisation en temps réel de procédé. Cet article présente un exemple d’application de la réconciliation de données à des mesures fournies par les capteurs installés sur un four de durcissement de boulettes d’oxyde de fer. Les résultats montrent que la technique utilisée permet d’estimer des débits de gaz dans des conduites de plusieurs mètres de diamètre à partir de mesures de pression et de température, en plus de permettre d’identifier des mesures imprécises ou biaisées de capteurs. Les résultats peuvent aussi être utilisés pour le développement de capteurs virtuels pour relier la puissance de ventilateurs au débit de gaz poussé par ces derniers." @default.
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- W2035506877 date "2003-01-01" @default.
- W2035506877 modified "2023-09-25" @default.
- W2035506877 title "ESTIMATION OF GAS FLOW RATES AND PELLET TEMPERATURES IN AN IRON OXIDE INDURATION FURNACE" @default.
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- W2035506877 doi "https://doi.org/10.1179/cmq.2003.42.3.301" @default.
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