In order to simplify and speed up the kiln construction and improve the integrity of lining, a new type of refractory lining products were introduced. The product is white in color and regular in size, which can be fixed directly on the steel plate anchoring nails in the shell of industrial kilns. It has good fire-resistant and heat-insulating effect. Ceramic fiber folding block improves the integrity of fire-resistant and heat-insulating kilns and promotes the progress of kiln masonry technology.
I. Characteristics and application of ceramic fiber folding block
Excellent chemical stability; Excellent thermal stability; Excellent elasticity, the module is in the pre-pressure state, after the furnace lining masonry is completed, the expansion of the module makes the furnace lining seamless, ceramic fiber folding block can compensate the fiber lining shrinkage, in order to improve the fiber lining insulation performance, the overall performance is good; Excellent thermal stability and thermal shock resistance; The ceramic fiber module can be installed quickly, and the anchoring parts are arranged on the cold surface of the wall lining, which can reduce the material requirement of the anchoring parts.
Thermal insulation of lining of kiln in petrochemical industry; Thermal insulation of lining of furnace in metallurgical industry; Furnace lining insulation for ceramic, glass and other building materials industries; Heat treatment industry heat treatment furnace lining insulation; Other industrial kiln linings.
Secondly, the advantage of ceramic fiber folding block applied in industrial kiln
At present, the integrated module made of aluminum silicate ceramic fiber blanket by compression is gradually becoming the preferred material for thermal insulation lining of modern industrial furnace due to its advantages of high temperature resistance and easy construction.
Ceramic fiber folding block product features
1. In the process of installation, great stress will be generated after the unbundling of the folded blanket, which will be crowded and sealed without any gaps;
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 the different thermal changes of different components in the furnace body.
3. Because of its light weight and low heat capacity (only 1/10 of light heat resistant lining and light firebrick), it can significantly reduce the energy consumption in the operation and control of furnace temperature;
4, elastic fiber blanket can resist external mechanical forces;
5. Ability to resist any thermal shock;
6. The lining does not need drying and curing, and the furnace lining can be put into use after completion of construction;
7. Stable chemical properties. Except for phosphoric acid, hydrofluoric acid and strong base, other acids, bases, water, oil and steam are not corroded.
Iii. Performance characteristics of refractory fiber products
Refractory fiber, also known as ceramic fiber, is a refractory material with the lowest thermal conductivity and the best thermal insulation energy saving effect in addition to nano-materials. It has many advantages, such as light weight, high temperature resistance, good thermal insulation effect, convenient construction, etc., and is a high-quality industrial lining material. Compared with traditional refractory brick and refractory castable materials, ceramic fiber folding block has the following performance advantages:
A) light weight (reducing furnace load and extend the life of the furnace body) : refractory fibre is a fibrous refractories, the most commonly used refractory fiber blanket, volume density is 96 ~ 128 kg/m3, and use fiber blanket of folding refractory fiber modules volume density between 200 ~ 240 kg/m3, the weight is light brick or amorphous materials of 1/5 ~ 1/10, 1/15 ~ 1/20 is heavy refractory. It can be seen that the refractory fiber lining material can realize the light and efficient heating furnace, reduce the furnace load, and extend the furnace life.
B) Low heat capacity (less heat absorption and faster temperature rise) : the heat capacity of furnace lining material is generally proportional to the weight of furnace lining. Low heat capacity means that the kiln absorbs less heat in reciprocating operation, and the heating speed is accelerated at the same time. The heat capacity of ceramic fiber is only 1/10 of that of lightweight heat-resistant lining and lightweight firebrick, which greatly reduces the energy consumption in the operation and control of furnace temperature, especially for the heating furnace with intermittent operation, it has a very significant energy-saving effect.
C) Low thermal conductivity (little heat loss) : The thermal conductivity of ceramic fiber materials is less than 0 when the average temperature is 200℃. 06W/mk, less than 0 at 400℃ on average. 10W/mk is about 1/8 of that of light and heat-resistant amorphous materials, and about 1/10 of that of light bricks, while the thermal conductivity of ceramic fiber materials and heavy refractory materials is negligible. So the thermal insulation effect of refractory fiber material is very remarkable.
D) Easy construction (no need to leave expansion joints) : the construction personnel can be employed after basic training, and the construction technology has little influence on the adiabatic effect of furnace lining.
E) Wide range of use: With the development of refractory fiber production and application technology, refractory ceramic fiber products have been serialized and functionalized, and the product can meet the requirements of different temperature grades from 600℃ to 1400℃ in terms of service temperature. From the form has gradually formed from the traditional ceramic fiber cotton, ceramic fiber blanket, fiber felt products to refractory fiber modules, ceramic fiber board, ceramic fiber special-shaped products, ceramic fiber paper, fiber textiles and other forms of secondary processing or deep processing products. It can meet the needs of different industrial furnaces for refractory ceramic fiber products.
F) Thermal shock resistance: The fiber folding module has a particularly excellent resistance to severe temperature fluctuations, and the furnace lining of the fiber folding module can be heated or cooled at any fast speed on the premise that the heated material can withstand it.
G) Anti-mechanical vibration (flexible and elastic) : fiber blanket or fiber felt is flexible and elastic, and is not easy to be damaged, and the installed integral kiln is not easy to be damaged when it is impacted or vibrated by road transportation.
H) No need for oven: no need for oven procedures (such as: curing, drying, baking, complex oven process and protection measures in cold weather), furnace lining construction can be put into use after completion.
I) 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 less than 300HZ, its sound insulation capability is better than that of common sound insulation materials, which can significantly reduce noise pollution.
J) Strong automatic control ability: ceramic fiber lining has high thermal sensitivity, which is more suitable for automatic control of heating furnace.
K) Chemical stability: the chemical properties of ceramic fiber folding blocks are stable. Except for phosphoric acid, hydrofluoric acid and strong alkali, other acids, alkalis, water, oil and steam are not corroded.
The development trend of ceramic fiber folding block at present
1. Continuous development of ceramic fiber product varieties and production scale
Since the 1990s. In order to strengthen the ability to resist risks, some large ceramic fiber production enterprises have set up groups and carried out internal structural adjustment. Eliminated some backward technology and equipment and production lines, made a larger adjustment on product structure, compressed the competitiveness in the international market with poor ordinary aluminum silicate fiber products, expand the high purity aluminum silicate fiber, chromium, zirconium containing fiber, polycrystalline alumina fiber and polycrystalline mo Lei stone products such as production capacity. At the same time, some large ceramic fiber folding block enterprises have successfully developed and mass produced polycrystalline zirconia fiber, silicon nitrided 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 spraying into fiber, dry needling into blanket” and “resistance spinning into fiber, dry needling into blanket” are still two typical technologies of ceramic fiber production in the world. Due to the increasing application scope of ceramic fiber, and with the development of high and new technology, ceramic fiber products are required to develop towards the functional direction, in order to meet the special functional products required in a specific field, such as to make the products have excellent high-temperature resistance, mechanical properties, flexible properties and spinnability, etc.
3. Improve the purity of ceramic fiber folding block production raw materials and develop production capacity
Ceramic fiber products quality mainly depends on the quality of raw materials, ceramic fiber production enterprises some industrial developed countries are in high purity synthetic powder as raw material, make the melting method to produce amorphous fiber chemical composition of Fe2O3, Na2O, CaO content of harmful impurities such as less than 1%, so as to improve the quality of the fiberboard and heat resistant performance.
4. Development efforts of Daxin products
Ceramic fiber folding block is generally used to transform and improve the existing process equipment and production process to produce functional products and expand the application field.
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SHANDONG REDON HIGH-TEMPERATURE MATERIAL Co. ,LTD. has the domestic advanced production equipment and leading production technology, with an annual output of 1050 ceramic fiber series products, 1260 ceramic fiber series products, 1400 ceramic fiber series products, 1600 polycrystalline series products tens of thousands of tons. With cotton, blankets, blanket, board, paper and all kinds of textiles, special-shaped products, modules, folding, castable, spraying, etc. Various forms of more than 30 kinds of products, can meet the insulation requirements of high temperature field under different conditions, welcome to have a friend need to click the website lower right online customer service or submit online enquiry, we will contact you the first time.