Method for removing ladle dross

Abstract

The invention provides the method of removing liquid steel scum, comprising the following steps: dragging the scum from liquid steel liquid level with harrow rotary dragging method, at the same time, adding the anti-oxidization agent on the clean liquid steel surface. Because of adopting the harrow rotary dragging method, the invention solves the problems of big loss of scarfing cinder, hard operation and heavy labor strength. Adding the anti-oxidization agent avoids the secondary oxidization of liquid steel. The method uses the freezing slag agent to solidify the liquid slag. It strengthens the effect of removing slag.

Description

technical field

[0001] The invention relates to a method for removing scum in a ladle and belongs to the technical field of metallurgy. Background technique

[0002] At present, the molten steel smelted by steelmaking furnaces such as converters and electric furnaces always has a certain degree of slag on the surface when the steel is tapped. These slags will have adverse effects on the quality of subsequent refining and continuous casting molten steel, mainly reflected in the problem of phosphorus reversion and the introduction of undesired metal or non-metal inclusions. Especially for high-grade steel grades, the impact of this slag is even greater.

[0003] Existing slag removal methods are slag removal or slag dumping, and these two methods have the following defects (1), because the existing ladle does not have a slag outlet, the slag removal and slag dumping operations are not easy to carry out. (2), all have relatively a large amount of molten steels to be taken out...