A method for treating the thickening on the upper part of the furnace wall of a blast furnace

Abstract

The invention relates to a method for treating knot thickness on the furnace wall of a blast furnace, and belongs to the technical field of blast furnace equipment cleaning. Including the following steps, 1), judging the thickness of the furnace wall; 2), shutting off the wind and lowering the material surface; lowering the material surface to the lowest position of the knot thickness, exposing the root of the furnace nodules, and at the same time according to the depth of the material lowering surface and the 3) Control the temperature of the furnace wall; during the process of shutting off the wind and lowering the material surface, control the cooling wall water at the furnace bump to the minimum; 4) Quickly shut off the wind; when the slag and iron When the wind is completely turned off, put the wind to the bottom quickly to shake off the furnace knob; 5), after the wind is turned off, fire the furnace top; 6), open the maintenance manhole, observe the position of the furnace knob, fix the water spray pipe, and turn the blower head Fix and align the nodules; 7) After fixing the water pipes, evacuate the personnel, open the water pipes and increase the water volume of the cooling wall to the maximum, and quickly cool the furnace nodules for a period of time; 8) Adjust the cooling wall water after re-airing to normal levels. The method is safe and efficient.

Description

Technical field[0001]The present invention relates to a method of processing a blast furnace wall, belonging to a blast furnace device cleaning technology.Background technique[0002]Modern smelting blast furnace is a typical five-stage structure. Since the top of the blast furnace, it is made up of five parts, respectively, the throat, furnace, furnace waist, furnace and abdomen and furnace cylinders. Under normal production of smelting conditions, the lower portion of the blast furnace furnace will form a certain thickness but very thin slag, which acts as a protective furnace wall, but the upper furnace wall is very clean because the temperature is compared Low, there is no melted furnace, so the binder of the slag or the furnace is not formed in the wall.[0003]However, due to various abnormal factors (such as: the furnace is high, there is a pipe gas flow in the blast furnace, causing a high temperature temperature in a short period of time, etc.), there will be in the blast furna...

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Problems solved by technology

[0005] In view of the thickening of the upper part of the furnace wall mentioned above, it can be said that the method of shutdown blasting can be said to be the fastest and more thorough solution. However, under the current situation of strict explosive control, the application period is long and the procedures are cumbersome. There is a big security risk