A repairing material for torpedo slag line area

Abstract

The invention relates to the technical field of metallurgy, in particular to a torpedo ladle slag line zone repair material. The repair material comprises the following components in percentage by mass: 40 to 80 percent of aluminum silicon carbide carbon brick waste, 10 to 40 percent of third-grade brown aluminum oxide, 1 to 6 percent of calcium aluminate cement, 2 to 8 percent of clay, 1 to 8 percent of silicon carbide material, 0.01 to 0.04 percent of polypropylene fiber and balance of inevitable impurity. The torpedo ladle slag line zone repair material provided by the embodiment of the invention has the advantages that the calcium aluminate cement can improve the normal temperature physical strength of the repair material; the clay can improve the viscosity of the repair material and the construction is facilitated; the silicon carbide can further improve the slag corrosion resistance of the repair material, the repair material is enabled to not stick slag and the times of use are improved; the polypropylene fiber can reduce the drying time of the repair material after construction, improve the volumetric stability during baking or use and prevent burst. The torpedo ladle slag line zone provided by the embodiment of the invention improves the slag corrosion resistance of the torpedo ladle slag line zone repair material; since a great amount of aluminum silicon carbide carbon brick waste is adopted, the use cost of the repair material is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a repair material for the slag line area of ​​a torpedo tank. Background technique [0002] The torpedo tank is an important equipment for holding and transporting molten iron, such as figure 1 As shown, the interior of the torpedo tank mainly includes structures such as a permanent layer 1, a working layer 2, an insulating layer 3, and an iron receiving port 4. In the field of metallurgical technology, the torpedo tanks of medium and large steel plants are used more than 1,000 times. During the service process of torpedo tanks, several intermediate repairs and minor repairs are required to ensure that the lining bricks of torpedo tanks can be used safely and ensure that the entire torpedo tank Tanks can be run economically and efficiently. At present, most steel mills use torpedo tank mouth castables for repair, which is effective for repairing the impact area, but it is us...

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Problems solved by technology

[0003] The embodiments of the present invention provide a repairing material for the torpedo tank slag line area, which solves the technical problems of poor slag erosion resistance and easy sticking of slag in the prior art torpedo tank slag line area repair material, and improves the torpedo tank slag line area. The slag erosion resistance of the repairing material in the area reduces the cost of using the repairing material

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