A method and device for measuring the depth of molten iron in a molten iron tank

Abstract

The invention provides a method and device for measuring the depth of hot metal in a hot metal bottle. The device comprises a hot metal bottle tipping trolley, a limiting striker, a limiting switch, a distance measuring instrument and a controller. The method comprises the steps that the controller controls the hot metal bottle tipping trolley to move to a measurement position, the closing of the limiting switch serves as a triggering signal, the distance measurement instrument is controlled to measure the vertical distance between the distance measurement instrument and the liquid level in the hot metal bottle after slagging-off of the hot metal in the hot metal bottle, the difference between the vertical distance measured and the vertical distance between the distance measurement instrument and the top of the hot metal bottle is obtained, then the headroom of the hot metal in the hot metal bottle currently is obtained, and finally the difference between the known depth of the hot metal bottle and the headroom of the hot metal is obtained to further obtain the depth of the hot metal in the hot metal bottle currently. Due to the adoption of the technical method that the depth of the hot metal in the hot metal bottle is obtained by measuring the headroom of the hot metal in the hot metal bottle after slagging-off of the hot metal directly, the influence of slag thickness on a measurement result is effectively avoided, and the hot metal depth measurement error is reduced due to the fact that the measurement accuracy of the distance measurement instrument is far higher than that of manual visual measurement of the headroom.

Description

technical field [0001] The invention relates to the technical field of distance measurement, in particular to a method and a measuring device for measuring the depth of molten iron in a ladle. Background technique [0002] At present, domestic iron and steel enterprises generally adopt mechanical stirring method, that is, KR (Knotted Reactor) desulfurization process. In the process of tapping iron in ironworks, it is usually accompanied by slag, and the amount of iron discharged from each tank of molten iron is unstable, and the amount of slag is not fixed. Generally, the bottom of the molten iron tank is molten iron and the top is slag. Since the insertion depth of the KR desulfurization stirring paddle is closely related to the depth of molten iron in the molten iron tank, in order to achieve the best stirring effect, the insertion depth of the stirring paddle needs to change with the level of the molten iron in the molten iron tank. [0003] In the prior art, most steel ...

AI Technical Summary

Problems solved by technology

[0004] Due to the error in the clearance of the molten iron tank obtained by visual inspection, and the thickness of the slag is not constant, this measurement method makes the final deviation of the molten iron depth large, generally the error is 100-200mm, which affects the insertion depth of the stirring paddle. Cause poor stirring effect, and then affect the desulfurization effect

Images