Cooling wall of blast furnace and manufacturing method of cooling wall

Abstract

The invention provides a cooling wall of a blast furnace and a manufacturing method of the cooling wall. The cooling wall of the blast furnace comprises a plurality of cooling pipes which are vertically arranged side by side and a body wrapping the cooling pipes. The liquid inlet ends and the liquid outlet ends of the cooling pipes all extend out of the body. The body is formed by combining a cast steel heat conductor and a copper heat conductor. The cast steel heat conductor at least wraps the sides, back onto a furnace cavity of the blast furnace, of the cooling pipes, and the copper heat conductor wraps one part of the sides, facing the furnace cavity of the blast furnace, of the cooling pipes. According to the cooling wall of the blast furnace, the beneficial effects of high mechanical strength of cast steel materials and the good cooling effect of copper materials are integrated, and therefore the service life of the cooling wall and the service life of the blast furnace are prolonged; and the dual requirements of the blast furnace for the cooling performance and the mechanical performance of the cooling wall are met. Meanwhile, compared with a cast steel or copper cooling wall, high cost performance is achieved.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgy, in particular to a cooling wall of a blast furnace and a manufacturing method thereof. Background technique [0002] The stave is an important equipment of the blast furnace body. Its main function is to protect the structure and airtightness of the blast furnace shell, so that the blast furnace shell can be produced under the conditions of high pressure, high temperature and strong corrosion. A complete stave is the main basis for forming and stabilizing the furnace body of the blast furnace, and plays a very important role in whether the blast furnace can run smoothly, efficiently and with low consumption. The performance requirements for the stave of the blast furnace during the production process are mainly as follows several aspects: [0003] 1. It has sufficient cooling capacity and can take away the heat transferred to it from the furnace through cooling water; [0004] 2. It can...

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Problems solved by technology

However, in recent years, there are still many copper staves of blast furnaces that have been damaged in a large area and have to be repaired in the middle. Excess, the slag skin falls off, the heat load of the copper stave increases immediately, and after the hot surface of the copper stave is exposed, the edge airflow is strong for a long time, and it is easy to be burned out; the second is that the mechanical properties of the copper stave are poor, Not wear-resistant, prone to deformation, open welding of water pipes and other problems, and when the bricks on the surface are eroded, the hot surface cannot withstand the wear of coke and unmelted ore, resulting in damage to the copper cooling wall due to the leakage of the cooling water channel

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