Method and device for cleaning cold water pool of blast furnace inba method water slag treatment device

Abstract

The invention provides a cleaning unit for a water cooling pond of a blast furnace INBA method water slag treatment device. The cleaning unit for the water cooling pond of the blast furnace INBA method water slag treatment device comprises a pressured water pump, an L-type steel pipe and high-pressure water guns; an outlet of the pressured water pump is connected with a pipe opening of a transverse part of the L-type steel pipe; the side wall of a vertical part of the L-type steel pipe is connected with a first branch pipe located at a second floor platform of the water cooling pond and a second branch pipe located at a third floor platform of the water cooling pond; and the tail ends of the first branch pipe and the second branch pipe are connected with the high-pressure water guns correspondingly. The invention further provides a cleaning method for the water cooling pond of the blast furnace INBA method water slag treatment device. The cleaning method for the water cooling pond of the blast furnace INBA method water slag treatment device comprises the steps that the liquid level of the water cooling pond is lowered to around two meters firstly; a first water valve and a second water valve are opened secondly; the two high-pressure water guns are held by operators and flushing is conducted straight at accumulating slag inside a tower, and the accumulating slag can be fast eliminated; not only are hidden dangers due to high-place operation eliminated, but also the labor intensity of the slag removing operation is relieved; and further, the cleaning method is simple and has no special quality requirements for users.

Description

technical field [0001] The invention relates to the field of blast furnace slag treatment, in particular to a method and device for cleaning a cold water pool of a blast furnace INBA method slag treatment device. Background technique [0002] The slag treatment of Baosteel’s four blast furnaces all adopts the INBA method. The red slag passes through the blowing box, and is blown and granulated by the high-pressure water sprayed from the blowing box. Then the slag-water mixture enters the slag water bucket, and then flows to the Drum equipment. The water slag enters the drum system for dehydration, most of the water slag is transported to the finished product tank through the conveyor belt, a small part of the water slag enters the sump, is transported by the underflow pump and returns to the slag bucket, and is dehydrated again through the drum system, and the other small part of the water slag goes through the The overflow tank flows into the hot water pool, and then is tr...

AI Technical Summary

Problems solved by technology

These accumulated slags will block the suction port of the granulation pump when they fall to the bottom of the tower, resulting in insufficient blowing water, resulting in loud explosions. In more serious cases, the water slag system will be shut down directly, and dry slag will be released, which will affect the production of the blast furnace; therefore, it is necessary to clean the cold water regularly Slagging in the pool

There is only one walkway in the cold water pool, which is used for point inspection of fans. The safest way to clean up these slag deposits is to build scaffolding in the tower, but it takes too long and the production conditions do not allow it (each blast furnace repair time is 24 hours) , so this solution cannot be used

At present, workers enter the cold water pool and use picks, shovels and other tools to clean up. During the operation, the workers need to fasten safety belts, fall arresters and other safety measures to enter the tower for cleaning. It belongs to the second-level high-risk project, and the risk is very high. Hardened slag, extremely difficult to clean

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