1 Classification of refractory materials for glass melting furnaces
The size, quality, and production effect of kilns are different due to the types of glass produced. Through the performance comparison and analysis of refractory materials, the use effect of refractory materials is studied. At present, refractory materials resistant to corrosion by high-temperature molten glass can effectively improve the weak links of the furnace. The following will analyze several typical refractory materials based on this characteristic.
(1) Casting materials.
The casting materials are distributed in a certain proportion, and through high temperature melting, sufficient pouring can be realized to ensure the use effect of refractory materials. The material after fusion casting is mainly composed of alumina, zirconia and fusion casting materials. Among them, zirconia is mainly used in the production of electric melting furnaces for specific glasses. At present, the international fusion casting materials mainly use this kind, which has a strong influence. The refractory materials in our country use a certain proportion of high-temperature materials after the fusion is completed, and the molding process of the refractory products is realized by pouring. The refractory materials of the glass kiln are mainly zirconium corundum, alumina and so on. Use different space glass liquid adjustments to determine the main production range of oxidized products. Our country mainly uses fused cast refractory materials, but there are fewer scales.
(2) Silica brick material.
Silica brick material is the main refractory product used in glass kilns, and is mainly used in the external flame part of the kiln. Through the normal operation of the silica bricks, the quality of the silica bricks can be ensured. However, the heating of silica bricks is not very uniform, and the non-refractory parts are likely to reduce the service life. Choosing high-quality silica bricks and refractory materials with more high temperature resistance is a problem that my country's glass furnace industry needs to study.
(3) Magnesium refractory materials.
The glass kiln uses magnesium metal materials, and its interior is mainly composed of fused magnesia bricks and alloy magnesia bricks. Through heat storage and storage, the standard size of dosage is increased, and the service life of glass kilns in my country is improved. However, metal will be consumed by long-term use of temperature. This magnesium metal oxide material is the main weak link in the use of glass furnaces.
2 The influence of glass melting furnace material refractory level
The refractory material of glass melting furnace is mainly affected by many factors such as service life, high temperature resistance level, glass product quality, energy consumption and product cost value. With the development of glass melting furnace technology , The product quality of refractory high temperature technology continues to improve. Through the analysis of possible weak links in the refractory quality of new materials in glass melting furnaces, the use of glass melting furnaces can be understood from an angle, so as to gradually understand the weak links of glass melting furnaces.
2.1 Service life
Refractory products of glass melting furnace are prone to corrosion under the effect of long-term high temperature. As the temperature increases, the high temperature resistance index decreases, and the erosion situation intensifies. The higher the temperature, the greater the corrosion level, the cullet will easily penetrate into the fuel, the impurities in the kiln will increase, and the corrosion of refractory materials will be serious, which directly affects the long-term use of glass melting furnace materials, which is one of the weak links of glass melting furnaces . The service life of glass melting furnace in our country is generally about 8 years. If the high temperature resistance of the glass melting furnace can reach more than 10 years, the cost of the glass melting furnace can be greatly reduced, the corrosion level of impurities, and the purity of the glass liquid can be improved. Quality, reduce economic losses and reduce the level of cost control. Analyze the overall service life of the melting pool, regenerator, and refractory materials in the melting furnace, and gradually increase the life level of the glass melting furnace to ensure the reasonable maintenance of the service life of the melting furnace and ensure that the glass melting furnace can better improve the refractory level , To ensure the temperature control management of the glass melting furnace.
2.2 The control and adjustment of the internal size of the furnace
The internal scale of the furnace directly affects the use effect of the furnace. The larger the furnace, the higher the energy consumption and the slower the temperature rise. It is necessary to use automatic heating and subsequent preheating control and adjustment technology in large-scale furnaces, strengthen the high temperature resistance of large-scale furnaces, regulate the three indicators of product quality, output, and energy consumption of the furnace, and gradually improve the refractory materials. Quality, to ensure the precision standard and scale of the glass melting furnace. According to the scale of the furnace, the temperature is gradually increased to prevent the melting rate of the furnace from being too high and affecting the high temperature resistance standard of the furnace.
2.3 Analysis of the influence of furnace combustion value technical standards
Refractory materials need to be adjusted and applied and promoted based on glass furnace technology. The use of all-oxygen material combustion can effectively reduce the level of clarification technology, strengthen the effect of all-oxygen combustion, and achieve the level of combustion in glass furnaces. promote. The use of a glass melting furnace can effectively increase the concentration of alkali in the atmosphere, but alkali will cause uneven dissolution, affect the high temperature resistance of the glass, and cause changes in the properties of refractory materials.
2.4 The influence of glass quality
The refractory level of the glass melting furnace may be affected by the corrosion of glass production, resulting in uneven dissolution and affecting the level of glass dissolution. This uneven dissolution can cause defects such as bubbles, stones, or waves in the glass. Therefore, the glass liquid, alkali vapor, and bubbles in the refractory material are likely to cause the performance and quality of the glass product to decrease. To strengthen the level of glass quality, it is necessary to improve the optimized management of refractory material quality.
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3 Development and application trends of glass refractories
(1) The scope of use of the glass melting furnace. China glass melting furnace has undergone material integration and production enterprises integration and reorganization, and there are weaknesses in technical links, process links, and product quality. For example, for fusion-casting materials, my country has changed its fusion-casting materials to achieve the effect of improving high-temperature resistant materials in my country's fusion-casting industry. However, compared with the international level, the high temperature resistance level of my country's molten glass materials cannot fully adapt to and meet the requirements of today's glass melting furnaces. In order to effectively strengthen the use of fused cast refractory materials, establish good refractory materials, improve the establishment of refractory production material management standards, systematically allocate enterprise production, strengthen industry integration and reorganization, and build high-temperature resistant high-quality materials production enterprises, thereby gradually reducing The multiple configurations of production enterprises affect the overall development of the industry.
(2) Application development of refractory high temperature in glass melting furnace. High-temperature-resistant furnaces in my country need to mainly study the development of low-temperature melting. According to the level of glass melting furnaces, it can realize all-oxygen combustion, silicon-free material melting, and electric-assisted melting. The use of high temperature resistant materials greatly improves the high temperature resistance of glass. The quality and performance of high temperature resistance are gradually improved, the use effect of the furnace is also improved, and the consumption of refractory is gradually reduced. The refractory use of glass melting furnaces in my country shows that the consumption of glass melting furnaces will not increase, but the structure of refractory materials will be greatly changed. Strengthen the proportion of refractory consumption in glass melting furnaces, gradually improve the structure of refractory materials, change the use of magnesia bricks and silica bricks, realize the gradual increase in the use of fused cast refractories, strengthen the use of new refractory materials, and ensure the use of glass furnaces .
4 Conclusion
To sum up, the glass melting furnace needs to analyze and research the weak links in the use of new high-temperature materials, strengthen the understanding and transformation of the weak links, and gradually promote the comprehensive development of both refractory materials and the glass industry, and improve the technical level .At the same time, strengthen the development of the management level to ensure the rapid development of the high temperature resistance of Chinas'
