Melting furnace structure applied to production of high aluminum electronic glass

Abstract

The invention discloses a melting furnace structure applied to production of high aluminum electronic glass. The melting furnace structure includes a melting part, the front end of which is provided with a feeding wall, both sides are provided with heat storage chambers, and the heat storage chambers and the side wall of the melting part are communicated through small furnaces; the arch top flamearea of the melting part adopts AZS fused zircon corundum brick and alpha-beta corundum brick, a non-flame area breast wall adopts alpha-beta corundum brick and beta corundum brick, the arch tops of the heat storage chambers adopt fused magnesia brick, and the pool wall and bottom of the melting part both adopt high zirconium brick. The structure can resist a high temperature of 1650DEG C, has good creep resistance, and can be melted into high aluminum glass with an aluminum content of 0-24%, and can meet the production of low iron, high aluminum, ultra white and ultra-thin (0.2-2mm) electronic glass.

Description

technical field [0001] The invention belongs to the technical field of high-alumina glass production, and relates to high-alumina glass production equipment, in particular to a furnace structure used in the production of high-alumina electronic glass. Background technique [0002] The electronic glass process is gradually rising. Because the production of high-alumina cover glass has the characteristics of large capital investment and high technical difficulty, only a few companies in the world, such as Corning of the United States, Asahi Glass of Japan, Schott of Germany and NEG of Japan, can stably produce in batches. The industry is highly monopolized. China is a major producer of PCs, tablets and smartphones in the world. Only Xuhong and CSG can produce high-alumina cover glass in small batches. On the whole, they have been restricted in the basic materials of cover glass substrates. In foreign countries, high-alumina glass has a high melting point and is difficult to me...

AI Technical Summary

Problems solved by technology

[0002] The electronic glass process is gradually rising. Because the production of high-alumina cover glass has the characteristics of large capital investment and high technical difficulty, only a few companies in the world, such as Corning of the United States, Asahi Glass of Japan, Schott of Germany and NEG of Japan, can stably produce in batches. The industry is highly monopolized. China is a major producer of PCs, tablets and smartphones in the world. Only Xuhong and CSG can produce high-alumina cover glass in small batches. On the whole, they have been restricted in the basic materials of cover glass substrates. In foreign countries, high-alumina glass has a high melting point and is difficult to melt and clarify. Industrial safety and long-term development of the industry are severely restricted.

[0003] If an all-oxygen kiln is used to produce high-alumina electronic glass, it is prone to problems such as many bubbles, heavy glass reinforcement, and high β-OH content, which will affect the production yield and post-processing performance

[0004] If an air kiln is used to produce high-alumina electronic glass, due to the high melting point of high-alumina glass, a high temperature of at least 1610°C is required. All of them are easy to be damaged. If the traditional silicon material is used for the roof of the melting part, it has poor alkali corrosion resistance at high temperature. It is scoured by flames and alkaline materials, resulting in burning loss, which affects the continuity of production and shortens the life of the kiln; and the pool If the wall adopts the traditional configuration, the high-alumina and high-alkali glass liquid will intensify the erosion of the pool wall, and it is easy to be eroded and broken, causing defects in zirconium and aluminum refractory materials during production. If there is no protective brick at the feeding port, it is easy to break in the later stage of production; If the roof of the room is made of traditional silica bricks, it is resistant to high temperature and high alkali, has poor alkali corrosion resistance, and has a very short life. It needs to be repaired regularly during production, which affects product quality.

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