Control of a roasting process for the recovery of vanadium

Geyrhofer, W.; Voglauer, B.; Joergl, H.P.

doi:10.1109/cca.2003.1223507

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…In drying-period I the drying rate dwH 2 O dt is assumed to be constant with respect to the water content w H 2 O with drying velocity v Tr , see Equation (1).…”

Section: Drying Kineticsmentioning

confidence: 99%

“…Besides temperature control in the individual floors it is essential to control the chemical composition of the slag. The design procedure of a temperature control system which is based on the mathematical model is illustrated in [1]. The design of a model based control system for the slag composition will be given in a future publication.…”

Section: Chemical Modelmentioning

confidence: 99%

“…For process simulation and control it is often necessary to determine a dynamic model of the process. In the actual application a physical model of a vanadium roast process was set up to study various process modifications of a computer simulation program and also for model-based controller design [1].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Model of a Roast Process for Simulation and Control

Voglauer

Jörgl

2004

Mathematical and Computer Modelling of Dynamical Systems

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Roasting in a rotary kiln or multiple hearth furnace is a common routine in metals-or minerals processing. The requirement for more efficient operation or the nature of the process makes it difficult for the operator to handle the plant manually. Therefore, it is advantageous to create a process model, which gives the opportunity to investigate efficient modes of plant operation and to design a process control system.In this paper a mathematical model of a roast process for the recovery of vanadium from steelworks slag in multiple hearth furnace is presented. It consists of a transportation model, a thermodynamic model and a chemical model for the characterization of decisive states like mass, temperatures and important concentrations, respectively. In order to adequately describe the process specifics the kinetics of drying and of the chemical reactions have to be considered.Validation was carried out by comparison of simulation data and measurement data from a large scale industry plant. The comparison showed good consistency for the mass-flow and the temperatures. Also the much more critical prediction of chemical states proved to be satisfying due to the implementation of a new reaction kinetics approach.

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“…In drying-period I the drying rate dwH 2 O dt is assumed to be constant with respect to the water content w H 2 O with drying velocity v Tr , see Equation (1).…”

Section: Drying Kineticsmentioning

confidence: 99%

Section: Chemical Modelmentioning

confidence: 99%