Blog
Yuhua Fused Cast
Construction method of refractory insulation materials for glass kilns
Time：
Sep 13,2024
The current construction methods for refractory insulation materials used in the melting section and the heat storage chamber swan top can be divided into two types: cold insulation and hot insulation.
Refractory insulation materials are characterised by the need to reduce heat dissipation and increase the thermal efficiency of the kiln, as well as to ensure the longevity of the kiln. After carrying out refractory insulation material insulation, the temperature of the outer surface of the body brick material will be greatly increased, which requires that the quality of the body brick material must be excellent, and also use high-quality mud. This mud should have a certain degree of bonding at room temperature, so that the brick material in the process of kiln baking bond more firmly, Swan brick does not sink or draw. Only in this way can the insulated kiln be in good operating condition and achieve the purpose of heat insulation.
The specific implementation process of this heat preservation method
1, cold construction
(1) Melting part of the big swan and the top of the heat storage room swan
The big swan masonry is completed, with high-quality silica mud thin slurry grouting after tightening the pull strip. Withdraw the swan tyre. After 24~48h cold observation to confirm the stability, clean up the top of the swan, and use high-quality silica mud paving stone, the thickness of which is 10~20mm, while the upper part of the lightweight thermal insulation bricks, but the middle of the big swan is about 1.5~2m wide and the expansion joints of the swan do not lay thermal insulation bricks.
(2) Chest wall of the melting section is constructed with lightweight heat preservation bricks in cold state.
2.Hot state insulation layer construction
(1)Melting section of the big swan and heat storage room top swan As the thermal insulation coating is paste-like, and the construction is extremely convenient, so the end of the kiln, card expansion joints and the top of the swan in the middle of the sealing and lightweight thermal insulation bricks laying can be carried out after the completion of the implementation. Due to the insulation drying process will discharge a large amount of water vapour, so a one-time coated too thick, it is very easy to fall off, so the first layer of coating thickness should be controlled within 10mm, and then gradually increase the thickness of coating until the requirements of the provisions of the last layer of smoothing can be.
(2)Side wall parts
As the insulation coating for the paste-like, paste density, for vertical surfaces one-time coating thickness is thicker, with the internal drying process releases a large amount of water vapour, there is a large area of shedding, so when the surface temperature of more than 50 ℃, the first layer of the thickness of the coating is generally no more than 2 ~ 3mm, to be the first layer of drying and then coated with the second layer, the thickness of its control in about 10mm, the third layer can be appropriately thickened. The third layer can be appropriately thickened at the beginning, until it reaches the specified thickness. The last levelling, and in the water evaporation of about 60% when another calendaring process to ensure that the surface is smooth and beautiful. This material is generally not required for waterproof treatment for indoor use.
As can be seen from the two methods described above, the refractory insulation materials used in glass melting kilns are mainly lightweight insulation bricks and insulation coatings. After the implementation of thermal insulation, it effectively reduces heat dissipation to improve the thermal efficiency of the kiln.
Recommended content
Share to
CONTACT US
Tel ：
E-mail：
Address：
The Industry Park, XinMi City, Henan Province
