In order to simplify and speed up kiln construction and improve the integrity of furnace lining, a new type of refractory furnace lining products are introduced. The product is white in color and regular in size. It can be directly fixed on the steel plate anchor nail of the industrial kiln shell. It has a good effect of fire resistance and heat insulation. The ceramic fiber folding block improves the integrity of the kiln fire resistance and heat insulation and promotes the progress of the kiln masonry technology.
1、 Characteristics and application of ceramic fiber folding block
Excellent chemical stability; Excellent thermal stability; Excellent elasticity. The module is in the preloading state. After the furnace lining is built, the expansion of the module makes the furnace lining seamless. The ceramic fiber folding block can compensate the shrinkage of the fiber furnace lining, so as to improve the thermal insulation performance of the fiber furnace lining. The overall performance is good; Excellent thermal stability and thermal shock resistance; The ceramic fiber module is installed quickly, and the anchor is set on the cold surface of the wall lining, which can reduce the material requirements of the anchor.
Lining insulation of kilns in petrochemical industry; Thermal insulation of furnace lining in metallurgical industry; Lining insulation of kilns in ceramics, glass and other building materials industries; Lining insulation of heat treatment furnace in heat treatment industry; Other industrial kiln linings.
2、 Advantages of ceramic fiber folding block in industrial kiln
At present, the integral module made of aluminum silicate ceramic fiber blanket by compression is gradually becoming the preferred refractory for thermal insulation of modern industrial kiln lining because of its high temperature resistance, easy construction and many other advantages.
Product features of ceramic fiber folding block
1. During the installation process, the folded blankets after being unbound will produce huge stress, crowding and sealing each other without leaving any gap;
2. The high elasticity of fiber blanket can make up for the deformation of furnace shell and reduce the construction cost. At the same time, it can make up the gap caused by different thermal changes of different components in the furnace body;
3. Due to light weight and low heat capacity (only 1 / 10 of light heat-resistant lining and light refractory brick), the energy consumption in furnace temperature operation control can be significantly reduced;
4. Elastic fiber blanket can resist external mechanical forces;
5. Have the ability to resist any thermal shock;
6. The lining body does not need drying and maintenance, and the furnace lining can be put into use after construction;
7. Stable chemical properties. Except phosphoric acid, hydrofluoric acid and strong base, other acids, bases, water, oil and steam will not be eroded.
3、 Performance characteristics of refractory fiber products
Refractory fiber, also known as ceramic fiber, is the refractory with the lowest thermal conductivity and the best heat insulation and energy saving effect except nano materials. It has many advantages, such as light weight, high temperature resistance, good thermal insulation effect and convenient construction. It is a high-quality lining material for industrial furnace. Compared with traditional refractory brick, refractory castable and other materials, ceramic fiber folding block has the following performance advantages:
a) Light weight (reduce kiln load and prolong furnace life): refractory fiber is a fibrous refractory material. The most commonly used refractory fiber blanket has a volume density of 96 ~ 128kg / m3, while the volume density of the refractory fiber module folded by fiber blanket is between 200 ~ 240kg / m3, and the weight is 1 / 5 ~ 1 / 10 of light refractory brick or amorphous material, It is 1 / 15 ~ 1 / 20 of heavy refractory. It can be seen that the refractory fiber lining material can realize the light and high efficiency of the heating furnace, reduce the furnace load and prolong the furnace life.
b) Low heat capacity (less heat absorption and fast temperature rise): the heat capacity of furnace lining materials is generally proportional to the weight of furnace lining. Low heat capacity means that the kiln absorbs less heat during reciprocating operation and the speed of temperature rise is accelerated. The heat capacity of ceramic fiber is only 1 / 10 of that of light heat-resistant lining and light refractory brick, which greatly reduces the energy consumption in furnace temperature operation control, especially for intermittent heating furnace.
c) Low thermal conductivity (less heat loss): when the average temperature of ceramic fiber material is 200 ℃, the thermal conductivity is less than 0. 06W / MK, less than 0 at 400 ℃ on average. 10W / MK, about 1 / 8 of light heat-resistant amorphous materials and about 1 / 10 of light bricks, while the thermal conductivity of ceramic fiber materials and heavy refractories is negligible. Therefore, the thermal insulation effect of refractory fiber material is very significant.
d) Simple construction (no expansion joint is required): the construction personnel can work after basic training, and the construction technical factors have little impact on the insulation effect of furnace lining.
e) Wide application range: with the development of refractory fiber production and application technology, refractory ceramic fiber products have realized serialization and functionalization. In terms of service temperature, the products can meet the use requirements of different temperature grades from 600 ℃ to 1400 ℃. In terms of morphology, it has gradually formed secondary processing or deep processing products in various forms, from traditional ceramic fiber cotton, ceramic fiber blanket and fiber felt products to refractory fiber modules, ceramic fiber boards, ceramic fiber shaped products, ceramic fiber paper, fiber textiles and so on. It can meet the needs of different industrial furnaces in various industries for refractory ceramic fiber products.
f) Thermal shock resistance: the fiber folding module has particularly excellent resistance to severe temperature fluctuations. On the premise that the heated material can bear it, the furnace lining of the fiber folding module can be heated or cooled at any fast speed.
g) Anti mechanical vibration (with flexibility and elasticity): fiber blanket or fiber blanket is flexible and elastic, and is not easy to be damaged. The installed integral furnace is not easy to be damaged when impacted or vibrated by road transportation.
h) No oven drying: no oven drying procedures (such as curing, drying, baking, complex oven drying process and protective measures in cold weather) are required. The furnace lining can be put into use after construction.
1) Good sound insulation performance (reducing noise pollution): ceramic fiber folding block can reduce high-frequency noise with frequency less than 1000 Hz. For sound waves with frequency less than 300 Hz, the sound insulation capacity is better than common sound insulation materials, which can significantly reduce noise pollution.
j) Strong automatic control ability: the high thermal sensitivity of ceramic fiber lining can better adapt to the automatic control of heating furnace.
k) Chemical stability: the chemical properties of ceramic fiber folding block are stable. Except phosphoric acid, hydrofluoric acid and strong alkali, other acids, alkalis, water, oil and steam will not be eroded.
The development trend of ceramic fiber folding block at present
1. The variety and production scale of ceramic fiber products are developing continuously
Since the 1990s. In order to enhance the ability to resist risks, some large ceramic fiber manufacturers have established groups and adjusted their internal structure. Some backward processes, equipment and production lines have been eliminated, the product structure has been greatly adjusted, the ordinary aluminum silicate fiber products with poor competitiveness in the international market have been greatly compressed, and the production capacity of high-purity aluminum silicate fiber, chromium containing fiber, zirconium containing fiber, polycrystalline aluminum oxide fiber and polycrystalline mullite fiber has been expanded. At the same time, some large ceramic fiber folding block enterprises have successfully developed and mass produced polycrystalline zirconia fiber, silicon nitride fiber, silicon carbide fiber, boride fiber and other new products for special application fields.
2. The manufacturing process, method and technology of ceramic fiber folding block are developing rapidly
At present, “resistance jet fiber forming, dry needling blanket making” and “resistance wire throwing fiber forming, dry needling blanket making” are still two typical process technologies for ceramic fiber production in the world. Due to the increasing application scope of ceramic fiber and the development of high and new technology, ceramic fiber products are required to develop in the functional direction to meet the special functional products required in specific fields, such as excellent high temperature resistance, mechanical properties, flexibility and spinnability.
3. Improve the purity of raw materials for the production of ceramic fiber folding blocks and develop the production capacity
The product quality of ceramic fiber mainly depends on the quality of raw materials. Ceramic fiber manufacturers in some industrial developed countries use high-purity synthetic powder as raw materials to make the content of harmful impurities such as Fe2O3, Na2O and Cao in the chemical composition of amorphous fiber produced by melting method less than 1%, so as to improve the quality and heat resistance of fiberboard.
4. Research and development of new products
Ceramic fiber folding block is generally to transform and improve the existing process equipment and production process, produce functional products and expand the application field.
For more details or questions, please call the company’s hotline + 0531 85800088 or through the online customer service website, or leave your contact information. We have technicians to solve the problems related to high temperature materials for you at any time.
Shandong redon high temperature materials Co., Ltd. has domestic high-end production equipment and reliable production technology, with an annual output of 1050 ceramic fiber series products, 1260 ceramic fiber series products, 1400 ceramic fiber series products and 1600 polycrystalline series products of more than 10000 tons. There are more than 30 kinds of products in different forms, such as cotton, blanket, felt, board, paper, various textiles, profiled products, modules, folding blocks, castables, spraying and so on, which can meet the heat insulation requirements of different situations in the high temperature field. Welcome to click the online service at the bottom right of the website or submit an online inquiry. We will contact you as soon as possible.
