Simulación del canal del alto horno n° 2 por medio de modelos físicos

Abstract

In the operation of the blast furnace through the aim is to diminish metal losses with the slag, that can be as high as 2.5% and to reduce or eliminate the slag carry over, that leads to an increase in the cost of downstream treatment. Another important issue is to minimize the need for repairing the walls and floor, in order to increase their life. A physical model of the Siderar blast furnace Nº 2 through was constructed on 1:5th scale. To determine the flowrate, Froude and Reynolds similarity criteria were taken. The model allows simulation of different casting conditions, giving information about turbulent zones as well as slag separation or entrainement. A trial was made simulating a casting rate of 10 metric tons per minute for a mix of 60% metal and 40% slag. Oil was selected to simulate the slag. The fluid flow was observed in each zone: taphole and first part of the runner, zone of jet impact, zone of separation of slag and hot metal, and the zones of slag runner, skimmer and exit to the hot metal runner.

Key words: runner, blast furnace, simulation, water model.