High-quality high-aluminum runner brick as well as preparation method and application thereof

Abstract

The invention discloses a high-quality high-aluminum runner brick as well as a preparation method and an application thereof. According to the high-quality high-aluminum runner brick, first-grade alumina is taken as aggregate, a proper amount of naturally sintered mullite and binding clay are added to a powdery matrix material, and liquid silica sol is taken as a binding agent. According to the high-quality high-aluminum runner brick, due to the good performance of silica sol, the firing temperature of a product is effectively reduced, the interval range of the firing temperature is increased, and additionally, the physical and chemical indexes of the prepared high-aluminum rubber brick product are superior to those of rubber bricks produced with a conventional binding agent; ingredients of poured quality steel are uniform and stable if the high-quality high-aluminum runner brick is used in mold casting and steel pouring sites, the cleanness is high, and requirements of users are effectively met.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-alumina flow steel brick and a preparation method thereof, and also relates to an application of the high-quality high-alumina flow steel brick in special steel, high-quality steel and large mold steel casting molds. Background technique [0002] High-alumina flow steel bricks have strong adaptability in the field of steelmaking die casting and are widely used, especially in the pouring of special steel, high-quality steel and large-scale mold steel, it is more necessary to use high-performance and high-quality high-alumina flow steel bricks to ensure quality Stability of steel quality. At present, in the production process of high alumina flow steel bricks, the binder mainly uses liquid sulfate solution or organic matter as the binder. Due to the limitation of the use conditions of this kind of binder itself, it is necessary to add a large amount ...

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Problems solved by technology

At present, in the production process of high alumina flow steel bricks, the binder mainly uses liquid sulfate solution or organic matter as the binder. Due to the limitation of the use conditions of this kind of binder itself, it is necessary to add a large amount of bonding clay to the high alumina flow steel bricks to meet the requirements. The combined molding and firing performance of the flow steel brick, but the increase of the combined clay will lead to the increase of the liquid phase component after the high temperature firing of the matrix part of the product, the matrix is ​​resistant to molten steel erosion, and the erosion performance is reduced. The solution causes the increase of molten steel inclusions during the pouring process. Affects the cleanliness of the variety of steel

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