As the heart of the glass industry, the efficiency and stability of glass furnaces are directly related to the quality and cost of glass products. There are many components in a glass furnace, and as a key refractory material, fused cast AZS blocks bear the heavy responsibility of resisting high temperature, erosion and mechanical abrasion. Therefore, the rational selection of fused cast AZS blocks in glass furnace is not only related to the life of the furnace, but also affects the efficiency and effectiveness of the entire production process. As the central material of the key parts in the glass furnace, good fused cast AZS blocks will prolong the service life of the furnace and also reduce the maintenance cost. At the same time, it will improve the efficiency and quality of glass production, reduce the pollution of glass liquid, and meet the demand of glass industry for high quality and diversified products.So the fused cast AZS blocks are an indispensable and important part of glass furnaces and are of great significance in promoting the sustainable development of the glass industry. This article aims to discuss the principles of selecting fused cast AZS blocks in glass furnaces and focuses on analyzing the application characteristics and advantages of three types of fused cast AZS blocks, namely, fused cast AZS33 blocks, fused cast AZS36 blocks and fused cast AZS41 blocks.
Adaptability and durability are the first principles in the selection of fused cast AZS blocks. Glass furnace internal environment is complex and variable, both up to 1600 ℃ above the high temperature, and the molten glass liquid erosion and mechanical stress. So, the selected fused cast AZS blocks must have excellent high-temperature resistance and can withstand the high-temperature environment within the glass furnace. It must ensure that at high temperatures, softening, deformation, or rupture. At the same time, they have good resistance to erosion, such as glass liquid and other chemical components. Then there is thermal shock resistance. Under the conditions of frequent temperature changes in the furnace, the fused cast AZS blocks should be able to maintain good structural stability and avoid cracking or spalling due to temperature changes. This will ensure that it can still maintain stable work under extreme conditions and extend the service life of the furnace.
Fused cast AZS blocks are widely used in glass furnaces for their excellent resistance to high temperature and erosion, and fused cast AZS 33 blocks, fused cast AZS 36 blocks, and fused cast AZS 41 blocks represent products with different zirconia contents, and their performance characteristics and application areas are also focused.
Fused cast AZS 33 blocks:As the basic model in the AZS series, fused cast AZS 33 block has a high cost performance. Its moderate alumina and silica content and relatively low zirconia content (about 33%) give it good durability in general glass furnace environments. Fused cast AZS 33 blocks are commonly used in sidewalls, tops, and other areas of furnaces that do not come into direct contact with the molten glass liquid, and they meet the basic needs at a moderate cost and with consistent performance.
Fused cast AZS 36 blocks: Compared with fused cast AZS 33 blocks, fused cast AZS 36 blocks have increased zirconia content (about 36%), thus enhancing their corrosion resistance and thermal shock resistance. This makes fused cast AZS 36 blocks perform well in more harsh furnace environments, such as the pool wall of the melting chamber, the flow hole, and other areas. Its higher durability helps reduce the frequency of replacement due to erosion and wear, reducing maintenance costs.
Fused cast AZS 41 blocks: As the top product in the AZS series, fused cast AZS 41 blocks are known for their extremely high zirconia content (about 41%). This makes fused cast AZS 41 block in high-temperature resistance, and erosion resistance to an unprecedented height. Therefore, it is often used in the hot spot area of the furnace, such as the bottom of the melting chamber, the feeding port, and other direct contact with the molten glass liquid and the highest temperature. The excellent performance of the fused cast AZS 41 block ensures the stable operation of the furnace in these critical areas, extending the overall service life.
The principle of economy and cost-effectiveness is an important factor that enterprises must consider when choosing fused cast AZS blocks. On the one hand, although the initial investment of high-quality fused cast blocks is large, its longer service life and lower maintenance costs often bring higher overall economic benefits; On the other hand, enterprises also need to reasonably control costs according to their financial situation and production needs to avoid unnecessary waste. In general, under the premise of ensuring performance, we should choose cost-effective fused cast blocks to reduce the initial investment cost, and we should not forget to consider the service life and maintenance frequency of fused cast blocks, choose products with long life and low maintenance costs to reduce long-term operating costs.
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Fused cast AZS33 blocks: In terms of cost control, fused cast AZS 33 blocks have significant advantages. Its relatively low cost enables enterprises to effectively reduce initial investment pressure while ensuring basic production needs. Although its durability may be slightly worse than AZS#36 and AZS#41, in some areas where corrosion resistance is not required, AZS#33 fused blocks can still play a good role and bring considerable economic benefits to enterprises.
Fused cast AZS36 blocks: Fused cast AZS 36 blocks strike a good balance in terms of cost effectiveness. Its moderate price and excellent performance make it widely used in most glass furnaces. In areas where high erosion resistance is required but not excessive pursuit of extreme performance, fused cast AZS 36 blocks have become the first choice for enterprises. Its long service life and low maintenance costs bring stable earnings to the enterprise.
Fused cast AZS 41 blocks: Although the initial investment of fused cast AZS 41 block is large, the economic benefits brought by its excellent performance are equally significant. In hot areas of the furnace, fused cast AZS 41 block fuses significantly extend the service life, reduce the number of replacements and downtime, and thus reduce maintenance and production costs. In addition, its high durability also helps to improve the quality and stability of glass products, and further enhance the market competitiveness of enterprises.
The design and process requirements of the furnace must be fully considered when selecting the fused cast AZS blocks. Different furnace design has different requirements for the performance parameters of fused cast AZS blocks, such as size, thermal conductivity, expansion coefficient and so on. At the same time, different glass production processes will also put forward specific requirements on the corrosion resistance and thermal shock resistance of the fused cast AZS blocks. Therefore, when selecting the fused cast AZS blocks, it is necessary to ensure that the selected material can meet the furnace design and process requirements to ensure the stable operation and efficient production of the furnace.
►Furnace design adaptability: With their diverse specifications and customizability, the fused cast AZS blocks can be flexibly adapted to the needs of different furnace designs. Whether it is a large float glass furnace or a small special glass furnace, you can find the right type and specification of fused cast AZS blocks. In addition, fused cast AZS blocks also have good processing properties and can be cut, drilled, and other processing according to the actual needs of the furnace to meet the specific installation requirements. The different casting methods of AZS products (such as PT、QX、ZWS、WS) can meet the requirements of various parts of the glass furnace.
►Process requirements adaptability: In the glass production process, the fused cast AZS blocks also perform well. Whether it is the production process of ordinary sodium calcium silicon glass or high borosilicate glass and other special glass, fused cast AZS blocks can provide stable protection for the furnace with their excellent high-temperature resistance and corrosion resistance. In particular, fused cast AZS 41 blocks can withstand the flame impact in high-temperature environments and maintain a stable temperature environment inside the furnace.
Technical management is an important means to ensure the rationality of selection and use of the effect of fused cast AZS blocks. Through the establishment of a sound technical management system, the purchase, acceptance, installation, use, and maintenance of electric melting blocks are strictly controlled and managed, which can ensure that the performance and quality of the fused cast AZS blocks meet the requirements, and get full play in the use process. At the same time, with the continuous progress of glass production technology and the update of the furnace design concept, the selection and use of electric melting bricks also need to keep pace with the times, and constantly carry out technical improvement and optimization.
►Procurement and acceptance: When buying fused cast AZS blocks, enterprises should choose qualified and reputable suppliers for cooperation, and strictly by the relevant standards and norms for acceptance. By checking the appearance quality, size specifications, physical properties, and other indicators of the fused cast block, ensure that it meets the design requirements and use requirements.
►Installation and commissioning: When installing fused cast AZS blocks, enterprises should operate in accordance with relevant specifications and standards to ensure installation quality. At the same time, the furnace should also be debugging and trial run to test the use of the fused cast AZS blocks and adjust the relevant parameters.
►Use and maintenance: In the process of use, the enterprise should regularly check and maintain the fused cast block, and timely discover and deal with potential problems. For erosion, wear, and other problems of fused cast AZS block should be replaced in time to avoid affecting the normal operation of the furnace. At the same time, the daily maintenance and management of the furnace should be strengthened to improve the overall operating efficiency and service life.
►Continuous improvement and optimization: With the continuous progress of glass production technology and the update of furnace design concepts, enterprises should pay close attention to industry dynamics and technological development trends promptly to adjust and optimize the selection and use of fused cast AZS blocks. Through the introduction of new technologies, new materials, and new processes, the operation efficiency and production efficiency of the furnace are continuously improved.
To sum up, it is complicated and important work to select fused cast AZS blocks in a glass furnace. Enterprises need to consider adaptability and durability, economy and cost-effectiveness, meet the furnace design and process requirements, technical management and continuous improvement, and other factors to make scientific and reasonable decisions. Fused cast AZS 33 blocks, fused cast AZS 36 blocks, and fused cast AZS 41 blocks as the representative products of used cast AZS blocks each has unique performance characteristics and application advantages. Through the reasonable selection and use of these products, enterprises can ensure the stable operation and efficient production of glass furnaces to contribute to the development of the glass industry.
Henan SNR Refractory Co., Ltd enjoys a high reputation in the field of fused cast AZS blocks with its excellent technology research and development ability and rich practical experience. Whether it is fused cast 33AZS block, fused cast AZS 36 block, or fused cast AZS 41 block, SNR offers high-quality products that ensure stable operation of furnaces under extreme operating conditions. Its strict quality control system and professional technical support services, also provide users with a full range of protection. Choosing SNR's fused cast AZS block is not only a choice of reliable materials, but also a choice of long-term cooperation and trust.If you need fused cast AZS blocks,please contact us.
Email:moon@snrefractory.com Web:www.snrefractory.com
