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Seam jointing material for laying magnesia-carbon bricks and alumina-magnesia-carbon bricks

A technology of alumina-magnesia-carbon bricks and joint materials, which is applied in the field of masonry magnesia-carbon bricks and joint materials for alumina-magnesia-carbon bricks, can solve the problems of affecting the service life of ladles, poor slag erosion resistance, and low bonding strength. Achieve the effects of reducing maintenance tasks, strong slag erosion resistance, and good construction performance

Active Publication Date: 2006-09-13
WUHAN WINNING TECH
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AI Technical Summary

Problems solved by technology

Its disadvantages are poor slag erosion resistance, low bonding strength, high maintenance frequency during use, and affect the service life of the ladle

Method used

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Embodiment Construction

[0009] A joint material for masonry magnesia carbon bricks and aluminum magnesia carbon bricks. The technical solution adopted in this embodiment is: the joint material includes two components: solid powder and liquid binder. The solid powder is made of magnesia powder and flake graphite as the main raw materials, mixed with solid resin, silicon carbide, high-temperature pitch and metal silicon. In terms of weight percentage, magnesia powder is 75-85%, flake graphite is 5-10%, solid resin is 5-10%, silicon carbide is 1-4%, high-temperature pitch is 2-5%, metal silicon 0.5-2%; the liquid binder is made of high-furan resin as the main raw material, mixed with a certain amount of ethanol and washing oil, of which high-furan resin is 40-60%, ethanol is 15-30%, and washing oil is 15-30%.

[0010] Among them, the particle size of solid powder is: magnesia powder ≤0.088mm, flake graphite ≤100 mesh, solid resin ≤200 mesh, silicon carbide ≤200 mesh, high-temperature pitch ≤200 mesh, ...

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Abstract

A jointing material for Mg-C bricks and Al-Mg-C bricks is prepared from solid powder which is the mixture of Mg sand, flaky graphite, solid resin, SiC, high-temp asphalt and metallic Si, and the liquid adhesive which is the mixture of furan resin, alcohol and washing oil through proportional mixing and stirring.

Description

1. Technical field [0001] The invention belongs to the technical field of unshaped refractory materials. In particular, it relates to a joint material for masonry magnesia-carbon bricks and aluminum-magnesia-carbon bricks. 2. Background technology [0002] The development of magnesia carbon bricks has a history of more than 30 years. Because of its good slag resistance and thermal shock resistance, it has been widely used in converters, electric furnaces, ladle furnace linings and ladle slag lines. Alumina-magnesia-carbon bricks are also widely used in the ladle lining working layer due to the introduction of carbon-containing materials. Through investigation, it was found that the ladle slag line magnesia-carbon bricks and alumina-magnesia-carbon bricks were first damaged from the brick joints during use, and local or angular fractures occurred after about ten times of use. Because the ladle lining brick is scoured violently by molten steel and slag, the fractured or spal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/04
Inventor 刘忠江唐坤苏伯平丁岩峰刘少明徐家仁林先桥丁良盛
Owner WUHAN WINNING TECH
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