Disadvantages of traditional tunnel kiln roof insulation structure
Although the structure of semi-circular vault and three-core vault tunnel is relatively simple, they have disadvantages such as large space for dense roof and low utilization rate, which is not conducive to mechanical kiln, large temperature difference between upper and lower section of kiln body, large thermal energy loss, and large difference in product quality; Although the micro-arc vaulted tunnel kiln has a higher density and heat utilization rate than the circular-arc vaulted tunnel, and the product quality is better, the horizontal thrust of the vault on the kiln wall is very large, the kiln wall needs special reinforcement, the construction of density is complicated, and the density of the roof is difficult. Security performance is not high.
Advantages of Lightweight Aluminum Silicate Ceramic Fiber Flat Ceiling Insulation Structure
Ceramic fiber products emerged in the 1970s and are fibrous lightweight refractory materials. Ceramic fiber products have the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small specific heat capacity and mechanical vibration resistance. Machinery, metallurgy, chemical industry, petroleum, ceramics, glass and other industries have been applied. The density of clay refractory bricks is 2100~2300kg/m3, while the density of ceramic fiber modules made of ceramic fiber wool is only 200~260kg/m3, and the bulk density is only 1/10 of that of refractory bricks. Ceramic fibers replace refractories in the steel metallurgy and petrochemical industries. Traditional refractory products such as bricks and castables have made outstanding contributions to the energy saving and lightening of industrial dense furnaces.
With the continuous exploration of products and application structures, ceramic fibers are gradually applied in the brick and tile industry, and good results have been achieved. The use of ceramic fiber suspended flat roof structure on the kiln roof of the tunnel kiln successfully solves the problems of the traditional heavy refractories that are easy to fall off and collapse, and realizes the lightweight structure of the large-section tunnel kiln roof and the dense mobile tunnel. The cost is reduced, the structure is safe and reliable, and the energy saving effect is very good. The ceramic fiber ceiling module is currently widely used in the composite structure of flat laying, which has good air tightness, good thermal insulation effect and firm structure.
