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Repair method of blast furnace cold wall

A repair method and blast furnace technology, applied to cooling devices and other directions, can solve problems such as water leakage and insufficient repair strength, and achieve the effect of high repair strength

Inactive Publication Date: 2015-09-23
王春博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a repair method for the cold wall of a blast furnace, which solves the problem that the traditional repair method for the cold wall of a blast furnace cannot fundamentally solve the problem of water leakage and insufficient repair strength

Method used

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Embodiment Construction

[0012] The present invention will be described in detail below in combination with specific embodiments.

[0013] The steps of the method for repairing stave through pipe of the present invention are:

[0014] Step 1: Insert a copper bellows smaller than the inner diameter of the original water pipe into the damaged stave water pipe;

[0015] Step 2: The two ends of the copper bellows are respectively connected with the cooling water to form a new cooling channel;

[0016] Step 3: Pour high thermal conductivity carbonaceous grouting material between the copper bellows and the raw water pipe. The copper bellows is connected to the industrial water with the same pressure as the original one to start the furnace or to connect the soft water to the soft water cooling system.

[0017] Among them, the method of piercing stave pipes in step 1: first find out the position of the damaged stave after the blast furnace is shut down, disconnect the water inlet and outlet pipes of the da...

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Abstract

The invention discloses a repair method of a blast furnace cold wall. The repair method comprises the following steps: (1) a copper corrugated pipe smaller than a raw water pipe in inner diameter is inserted in a damaged cooling wall water pipe; (2) the two ends of the copper corrugated pipe are respectively connected with cooling water to form a new cooling channel; and (3) a high-heat conductivity carbon grouting material is filled between the copper corrugated pipe and the raw water pipe. The repair method has the beneficial effects of no existence of leakage problem after the repair and high repair intensity.

Description

technical field [0001] The invention belongs to the technical field of blast furnaces, and relates to a method for repairing a cold wall of a blast furnace. Background technique [0002] Affected by grouting quality, smelting strength, edge airflow and hot washing furnace, etc., the cooling stave of the blast furnace is easily damaged, and the maintenance of the cooling stave is a difficult problem. Especially when the blast furnace cooling water system adopts soft water closed circulation, maintenance is more difficult. If any water pipe in the cooling wall is damaged, the cooling water pipe connected to it must be controlled or cut off, which will bring great hidden dangers to production. [0003] The general treatment method is: cut off soft water and use long-term industrial water cooling, but the damaged cooling wall after industrial water cooling will have insufficient cooling strength, and the water temperature difference, heat flow intensity and heat load of the two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/10
Inventor 王春博
Owner 王春博
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