Etude hydrodynamique, fondamentale et pratique, des mouvements du bain au convertisseur soufflant par le fond

Leroy, P.; Lara, G. Cohen de

doi:10.1051/metal/195855010075

Cited by 6 publications

(3 citation statements)

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“…In all the experiments, the wave motion was constant for all experiments, appearing to be a function of the vessel size and geometry as found with waves in other metallurgical vessels [9, 15]. Radial waves in all experiments were found to have a period of 0.9 s. The frequency of bath wave oscillation appeared indifferent to lance height and nozzle angle in the model.…”

Section: Methodsmentioning

confidence: 52%

“…Such waves may be present throughout the processing cycle, continuing even after the blow has stopped. The period of the radially directed surface waves was independent of the mode of excitation, typically 0.9 s, suggesting that the natural frequency is dependent on the size and geometry of the vessel, as has been found with waves in other vessels [9, 15].…”

Section: Resultsmentioning

confidence: 75%

“…Leroy & de Lara [9] worked on wave motion induced by bottom blowing. Any air jet impinging on a liquid surface produces oscillations generating waves.…”

mentioning

confidence: 99%

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Oscillatory flow in the steelmaking vessel

Lee

O’Rourke

Molloy

2003

Scand Jof Metallurgy

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Physical modelling of the basic oxygen furnace (BOF) was undertaken with the object of developing an overall flow pattern within the vessel as a function of fluid-flow dynamics/vessel geometry interaction. The study was initiated as the result of localised refractory wear occurring in the knuckle region of a BOF vessel. The occurrence of the wear coincided with a change in lance tip design. This preferential wear limited the campaign life of the vessel. Modelling the fluid dynamics of the system was to examine any possible relationship between fluid-flow patterns and this refractory wear pattern. The 4-fold symmetry of the newer lance tip allowed the application of a quadrant sector model of the bath. This simplified the flow to the effect of an individual nozzle. A scale of 1/6th was chosen on the basis of the bath depth and flow rates required.Results from this work indicate that waves may have a role in this localised wear.The multiphase system of the BOF involving supersonic gas jets, molten iron and slag, and the interaction between these, ensure that there is no single model, in which all facets of similarity may be satisfied simultaneously. This is the major problem in modelling the BOF.

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Section: Methodsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 75%