Construction method for curing non-aqueous slurry at normal temperature in blast furnace

Abstract

The invention relates to a construction method for curing non-aqueous slurry at normal temperature in a blast furnace, which belongs to the technical field of blast furnace engineering construction. Internal self-flow casting construction is adopted at the part below a tuyere region, and the granularity and the density of the slurry are accurately adjusted in time according to the changing situation of the width between a cooling wall and a furnace shell; the gap between the cooling wall and the furnace shell of the tuyere region is small, has complicated shape and is simultaneously influenced by the installation of tuyere equipment to a larger extent, external slurry pressing construction is adopted, and a slurry pressing hole and an observation hole are arranged on the furnace shell of the tuyere region; and the grouting treatment for a thermocouple sleeve pipe is enhanced, the gas leakage of the thermocouple sleeve pipe is avoided, and meanwhile, a gas leakage passage between the cooling wall of a furnace hearth and a lining brick is filled in an auxiliary mode. The invention is applicable for newly building large blast furnaces, particularly adopts the slurry pressing of a copper-cooling wall furnace hearth structure, overcomes the defects and deficiencies of the prior art, solves the construction problem of blast furnace hearth slurry and improves the filling quality of the pressed slurry.

Description

technical field [0001] The invention belongs to the technical field of blast furnace engineering construction, and in particular provides a construction method for curing non-aqueous pressurized slurry at room temperature of a blast furnace. The slurry is filled between a blast furnace shell and a cooling wall, and is suitable for newly-built large-scale blast furnaces. Background technique [0002] Blast furnace longevity technology is one of the key technologies in ironmaking production. The service life of the blast furnace hearth determines the service life of the first generation of blast furnaces. At present, the "thermal solution" blast furnace longevity technology is generally used in newly built and in-use large blast furnace hearths. "Thermal solution" Changshou blast furnace adopts carbonaceous refractory materials in the furnace hearth area. At the same time, with the increase of blast furnace volume and the development of longevity technology and equipment, more ...

AI Technical Summary

Problems solved by technology

Although the patent sets the grouting material material, grouting pressure and grouting quantity, it generally belongs to the grouting construction outside the furnace after masonry. After the blast furnace hearth adopts copper cooling staves, the cooling staves and furnace shells in the hearth area The width and shape of the gap between them are very different. In order to meet the construction requirements, it is necessary to adjust the size of the slurry and the amount of the binder. Under this condition, accurately grasping the position of the construction interface is essential to ensure the filling effect of the slurry It is very important, it is difficult to control the filling height and filling effect of the slurry by using the external grouting method

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