A kind of sol-bonded blast furnace lining wet spray coating and its preparation method

Abstract

The invention provides a sol-bonded wet spray coating for a blast furnace lining and a preparation method of the sol-bonded wet spray coating. The spray coating comprises the following raw materials in parts by weight: less than or equal to 30 parts of silicon carbide, less than or equal to 80 parts of high alumina material, less than or equal to 60 parts of mullite, less than or equal to 60 parts of flint clay, 3-20 parts of alumina powder, 3-20 parts of silica fume, less than or equal to 5 parts of clay, 0.5-5 parts of resin powder, 0.02-1 part of organic fiber, less than or equal to 1 part of an interface agent, 0.01-0.2 part of a coagulation accelerator, 0.02-0.2 part of a dispersing agent and 8-12 parts of sol. The sol-bonded wet spray coating for the blast furnace lining and the preparation method thereof provided by the invention have the benefits that the use performance of the material is greatly improved, the service life of the material for construction is long, and the molten slag corrosion resistance and the erosion resistance are good, so that a contribution is made for high efficiency and long service life of a blast furnace.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a sol-bonded blast furnace lining wet spray coating and a preparation method thereof. Background technique [0002] The blast furnace is a smelting equipment that has been in continuous high-temperature production for a long time. During the long-term operation, the lining of the blast furnace is eroded, spalled and damaged locally or in large areas, which affects the normal operation of the blast furnace. In order to achieve the goal of long life and high efficiency of blast furnaces, prolonging the life of blast furnaces has always been a subject of concern to smelting engineers and technicians. The longevity of blast furnaces is one of the signs of the development level of ironmaking technology. At present, the wet gunning lining technology has been widely used in China. The technical feature is that the lining is gunned by using the blast furnace shutdown under the premise...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above problems, the present invention provides a sol-bonded blast furnace lining wet spray coating and its preparation method, which solves the defects of low high-temperature strength, poor high-temperature durability, poor material impact resistance, and poor high-temperature erosion resistance of the matrix in ordinary cement-bonded spray coatings. , improve the strength of the material during use, reduce the erosion of the material by the iron slag melt, and increase the service life of the material

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