Sealing and fire banking method for oxygen lance muzzle sleeve of fixed smoke hood

Abstract

The invention discloses a sealing and fire banking method for a oxygen lance muzzle sleeve of a fixed smoke hood, which comprises the following steps: S1, a preparation stage: S11, preparing materials such as a close-packed pipe, a graphite packing, a stainless steel bar and refractory mortar which are required for sealing in advance, and inspecting the materials to ensure that the materials reach a sealing use standard; and S12, connecting a power supply of mechanical equipment needing to be used with an external power supply, starting the mechanical equipment to operate, and checking whether the equipment can be normally used or not; and S2, a stainless steel bar mounting stage. According to the sealing and fire banking method for the oxygen lance muzzle sleeve of the fixed smoke hood, labyrinth type sealing is added to the gap face between the fixed smoke hood and a mounting flange and the oxygen lance muzzle flange face and the mounting flange face, sealing is conducted by filling grouting materials, and the equipment burning loss fault caused by the poor sealing effect of the oxygen lance muzzle sleeve is avoided, so that waste caused by leakage of recoverable gas is avoided, CO generated by smelting can be collected to the maximum extent, the consumption cost of spare parts is saved, and the economic benefits of enterprises are improved.

Description

technical field [0001] The invention relates to the technical field of using a fixed fume hood of a converter in a steelmaking plant, in particular to a method for sealing a fixed fume hood with an oxygen gun muzzle sleeve. Background technique [0002] At present, the fixed hood of the converter on the market is usually welded and fixed between the oxygen muzzle flange panel and the fixed hood, while the oxygen lance and the flange panel are usually bolted, and the flange panel and the fixed hood are usually connected by bolts. Use refractory material for pouring and laying, the position of the oxygen gun mouth of the fixed fume hood is close-packed, and there is a gap between the flange and the flange. In consideration of the working environment of the fixed fume hood, it is generally placed between the four side plates of the flange. Shrinkage joints are reserved to ensure the use conditions of thermal expansion and cold contraction, and to avoid cracking of weld points c...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for sealing and sealing fire of a fixed fume hood oxygen gun muzzle sleeve, to solve the problem that there is a gap between the close-packed pipe and the flange panel proposed in the above-mentioned background technology, so that the original pouring material is subjected to a long time After the gas is washed away, it will gradually pulverize and fall off, causing the CO gas in the fume hood to combust with the atmosphere, resulting in flame overflow, and the burning loss is not easy to recover CO gas in converter smelting, which will cause waste of energy consumption, and long-term burning loss will also lead to equipment damage. Problems that affect the long-term use of equipment

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