High-strength aluminum permeation-resistant castable and preparation method thereof

Abstract

The invention discloses a high-strength aluminum permeation-resistant castable and a preparation method thereof. The composition is prepared from the following components in parts by weight: 85 to 100parts of 0.8-1.5 mm special-grade high-alumina bauxite, 35 to 35 parts of less than 0.02 mm of special-grade high-alumina bauxite, 5 to 8 parts of cubic boron nitride with the thickness of 0.8 mm-1.5 mm, 2-3 parts of high-alumina cement with the thickness of less than 0.02 mm, 3-5 parts of silica powder, 12-14 parts of alumina sol, 5-7 parts of water, 2-3 parts of an anti-aluminum wetting agentwith the thickness of 0.1 mm-0. 3 mm, and 3-5 parts of an anti-aluminum wetting agent with the thickness of 0.001 mm-0. 003 mm. The 0.1 mm to 0.3 mm aluminum wetting resisting agent and the 0.001 mmto 0.003 mm aluminum wetting resisting agent are respectively prepared by mixing BaSO4, Cr2O3, hexagonal boron nitride and SiC according to a ratio of 3 to 3 to 0.1 to 2. The castable obtained according to the ingredients and the preparation method thereof disclosed by the invention is high in molten aluminum permeability resistance, high in strength and long in service life.

Description

technical field [0001] The invention relates to an inner lining material of a smelting furnace for aluminum processing, in particular to a high-strength anti-aluminum penetration castable and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, the demand for aluminum materials in various industries has increased sharply. As the most important melting furnace in the aluminum processing industry, the reverberatory furnace is widely used because of its large capacity and high thermal efficiency. [0003] Since aluminum is a very active metal, plus the extremely active elements such as Mg, Mn, Si, Zn in the aluminum alloy, it is easy to react with some components in the refractory material used as the lining of the reverberatory furnace. It is easy to penetrate into the refractory material, and physical or chemical reactions will cause the structure of the furnace lining to peel off, causing damage to the refractory mat...

AI Technical Summary

Problems solved by technology

[0003] Since aluminum is a very active metal, plus the extremely active elements such as Mg, Mn, Si, Zn in the aluminum alloy, it is easy to react with some components in the refractory material used as the lining of the reverberatory furnace. It is easy to penetrate into the refractory material, and physical or chemical reactions will cause the structure of the furnace lining to peel off, causing damage to the refractory material, reducing the service life of the reverberatory furnace, and affecting the preparation of aluminum materials

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