Aluminum-carbon sliding tile and method of producing the same

Abstract

The invention provides an aluminum-carbon sliding brick, which comprises the following compositions: 60 to 75 percent of aggregate, 15 to 30 percent of powder, 1 to 6 percent of carbon element materials, 2 to 7 percent of antioxidant and 3 to 20 percent of additive. The production method for the aluminum-carbon sliding brick comprises the following steps: firstly, the powder in the raw materials is premixed and prepared into mixed powder for standby; secondly, mixing is performed according to the feeding order of granular materials, a binder and the mixed powder; thirdly, the mixture is discharged and subjected to mechanical pressing; and fourthly, a green brick is dried and prepared into the aluminum-carbon sliding plate brick by an unfired technology or a light burning technology. The method adds nitride and spinel materials in the sliding brick to substantially improve the thermal shock stability of the sliding brick, so as to achieve the level of the aluminum-zirconium-carbon sliding brick; and because the addition of Al metals is adequately increased, air holes can be filled, and the method reduces the brittleness of materials, is favorable for green brick formation, and improves the volume density, the normal temperature strength and the high temperature strength, so as to improve the oxidation resistance of the sliding brick. The aluminum-carbon sliding brick produced by the method not only has good product quality and high strength but also has simple procedure and saves the sintering cost.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, in particular to a sliding brick for ladle and tundish flow control and a manufacturing method thereof. Background technique [0002] Skateboard is a functional refractory material for continuous casting, and it is required to have high high temperature strength, excellent thermal shock stability, good oxidation resistance and erosion resistance. At present, aluminum-carbon sliding bricks and aluminum-zirconium-carbon sliding bricks are widely used. Since the manufacture and use of zirconium-containing raw materials such as zirconium-mullite and zirconium corundum contained in aluminum-zirconium-carbon skateboard tiles are harmful to the environment, more and more environmentally friendly zirconium-free skateboard tiles are now more and more inclined to use. However, the performance of traditional aluminum-carbon sliding bricks is lower than that of aluminum-zirconium-carbon sliding...

AI Technical Summary

Problems solved by technology

The slide plate also has the problems of large amount of metal aluminum added, high production cost, and complicated nitriding firing process

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