Blog
Yuhua Fused Cast
Several important factors affecting the service life of glass kilns
Time：
Dec 15,2024
Several important factors affecting the service life of glass kilns
- Design quality: A good design is half the success of a project. The design of a glass kiln is a systematic project involving many disciplines such as mechanical calculation, thermal calculation, fluid mechanics, refractory materials science, and thermal instrumentation. A complete kiln design includes process layout, kiln dimensions, energy distribution, flame space aspect ratio, liquid and gas flow, comprehensive configuration of refractory materials, steel structure, control system, combustion system, forming equipment, process control, kiln masonry, installation, baking, thermal protection, environmental protection, and other related technologies.
- Selection of refractory materials: The choice of refractory materials is crucial to ensuring the service life of the kiln. A reasonable selection of refractory materials requires a thorough understanding of the characteristics of various refractory materials, selecting high-quality and reasonable materials based on the characteristics of the products and the various parts of the kiln, especially the choice of manufacturers and material matching for electric melting zirconia corundum bricks, which plays a vital role in the service life of glass kilns. The selection of materials for fused cast bricks should primarily come from reputable manufacturers, and the enterprise should have the equipment and capability for testing and inspection, ensuring that the products meet national standards and comply with the design requirements of the kiln, especially for critical areas such as the feed port corner, side wall, kiln sill, bubbling, liquid flow holes, and large bricks.AZS-33#、36#、41#The reasonable matching of materials is also a key factor affecting the service life of the kiln.
- Quality of kiln construction (masonry): Whether the refractory masonry mortar is full, the purity of the mortar, whether the size of the masonry brick joints meets design requirements, whether the transition layer between different materials is operated correctly, whether the construction and installation of the kiln arch formwork are reasonable, and whether the extension lines of the brick joints formed by each brick of the kiln cover pass through the center.(If the extension lines of the brick joints formed by each brick of the kiln cover do not pass through the center, cracks in the kiln cover during baking will be uneven, with cracks concentrated in certain areas, forming larger gaps.)All these factors will affect the overall service life of the kiln. Especially when masonry fused cast zirconia corundum bricks, attention should be paid to their thermal expansion coefficient, and expansion joints should be reserved in advance to avoid cracking due to the expansion of the brick body during baking!
- Baking of the kiln: The reasonableness of the temperature rise curve during kiln baking will affect the service life of the kiln, as glass kilns are a combination of various refractory materials, each with different thermal expansion coefficients, and some refractory materials have non-linear thermal expansion coefficients. There is a rearrangement of the crystal lattice, and this rearrangement causes abnormal volume changes in the refractory materials. Therefore, the formulation of the kiln baking temperature rise curve must consider the special properties and characteristics of each type of refractory material.
- The stability of the temperature field in the kiln during baking is very important. It not only means that the temperature difference within the same contour line should be small, but also that the temperature difference between the upper and lower parts of the kiln flame space should be small, meaning that the temperature difference within different contour ranges should be small. This way, the special requirements of the temperature rise curve for each type of refractory material can be implemented, allowing the kiln body to expand evenly and avoiding brick body cracking caused by uneven heating or rapid temperature rise.;During baking, the steel structure of the kiln, including the top screw clamps, should be adjusted in a timely manner, as these will also affect the service life of the kiln.
- Operation and maintenance of the kiln: The correct operation of the kiln not only refers to the control of melting temperature and feed amount but also includes how to make full use of the melting area of the melting pool, ensuring that the material pile is evenly distributed within the melting pool.;How to change the heat transfer effect of the batch through the feeding equipment. The type, installation, and proper use of the feeding machine have a significant effect on reducing energy consumption or lowering melting temperature.;The bubbling frequency and bubble diameter of the kiln's bubbling system also affect the melting effect and the temperature of the kiln.;Whether the crushed glass and batch contain metals, the operating pressure of the kiln, and the regular cleaning and maintenance of the kiln are all factors that significantly impact the service life of the kiln. Equipment is subjected to multiple influences such as high temperature, high pressure, and chemical corrosion during use. If maintenance is not performed in a timely manner, it can easily lead to equipment aging and damage. Therefore, regular inspection, maintenance, and care should be conducted on kiln equipment, and damaged parts should be replaced promptly to ensure the long-term stable operation of the equipment.
Recommended content
Share to
CONTACT US
Tel ：
E-mail：
Address：
The Industry Park, XinMi City, Henan Province
