A Method for Quickly Determining Specific Leakage Points of Blast Furnace Staves Online

Abstract

The present invention relates to an online method for quickly determining the specific leakage point of a blast furnace stave, which comprises the following steps: step 1, using the known pressure holding method to determine the column where the damaged stave is located; The staves are connected by connecting pipes, and the connecting pipes are equipped with exhaust valves, and the outlet end of the exhaust valves is connected with a U-shaped pipe with the opening facing down; Step 3: Open the row where the damaged stave is located and control the water Until the outlet water is slightly gasping or cloudy: rotate the return water three-way valve 90°, close the water outlet end of the return water three-way valve, open the water inlet end and the side end, and slowly close the water inlet valve until the outlet water appears panting or White turbidity phenomenon; the fourth step is to judge the specific location of the cooling wall with leakage. The invention can quickly and accurately judge the position of the leaking cooling wall online, and arrange treatment in time to avoid the impact of water leakage on the production of the blast furnace; and the water will not stop during the entire leak checking process, avoiding the damage to the cooling wall caused by long-term water interruption and leak checking Even burnt.

Description

technical field [0001] The invention relates to an online method for rapidly determining specific leakage points of a cooling wall of a blast furnace, and belongs to the technical field of ironmaking equipment maintenance. Background technique [0002] The blast furnace body is composed of furnace shell, cooler, refractory materials, tuyere, etc., and is divided into hearth, bosh, furnace waist, furnace body and furnace throat from bottom to top. The blast furnace stave is installed on the furnace shell along the height direction and the circumferential direction of the blast furnace. The space between the furnace shell and the stave is filled with refractory materials, and the hot surface of the stave is inlaid with refractory bricks. Water pipes are cast in the stave of the blast furnace and cooled by water. Its main function is to maintain a certain strength of the brick lining of the furnace body, maintain the furnace shape and protect the furnace shell, and resist the d...

AI Technical Summary

Problems solved by technology

This kind of leak detection method is cumbersome to operate, with a large workload and low efficiency. It needs to be carried out under the state of regular maintenance and wind shutdown. In this way, the leaking stave can be dealt with until the next scheduled maintenance, and the treatment period is long, especially in the later period of furnace operation. , when there is a lot of damage to the stave, it cannot meet the production demand

Moreover, this method of leak detection cannot meet the requirements of online leak detection. Long-term water cutoff will cause unpredictable damage or even burnt to the cooling wall.

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