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Question:

What’s the difference between heat preservation and heat insulation ceramic fiber blanket and rock wool blanket?

What’s the difference between heat preservation and heat insulation ceramic fiber blanket and rock wool blanket?

Answer:

Ceramic fiber strip is a kind of fibrous lightweight refractory material with light weight, high temperature resistance, good thermal stability, low thermal conductivity, low specific heat and mechanical shock resistance and other advantages, so it is widely applied in industries such as machinery, metallurgy, chemical engineering, petroleum, ceramics, glass and electronics. Ceramic fiber strip, one of fire-resistant and fireproof materials, is produced by the refractory fiber of high purity and applied in high temperature insulation. Compared with natural cellulosic fiber, the characteristics of raw material of glass fiber strip are as follows: circular cross profile, same diameter, highly elaborate production, high proportion of glass fiber and strong dimensional stability.
The difference between heat preservation and heat insulation ceramic fiber blanket and rock wool blanket: refractory ceramic fiber material is a kind of lightweight and efficient heat preservation and heat insulation material. Its advantages are as follows: the volume and density of ceramic fiber as lining are low. Ceramic fiber lining is 75% lighter than lightweight insulating brick lining and 90%-95% lighter than lightweight castable lining. If fiber lining is adopted, steel structure load of furnace can be greatly reduced and the service life of the furnace can be prolonged. Heat capacity (heat storage) of ceramic fiber as lining is low: Heat capacity of ceramic fiber is about 1/10 that of lightweight and heat resistant lining and lightweight castable lining. Heat capacity of furnace lining material is proportional to the weight of the furnace lining. Low thermal capacity means that furnace absorbs less heat in the reciprocating operation and, at the same time, the speed of warming gets faster, which greatly reduces the energy consumption of the furnace temperature operation and control and especially plays a very significant role in energy saving effect in the starting-up and blowing-out of heating furnace. Thermal conductivity of ceramic fiber as lining is low: When the average temperature is 400℃, 600℃ and 1000℃, thermal conductivity coefficient of ceramic fiber as lining is less than 0.1w/mk, 0.15w/mk and 0.25w/mk respectively, which is 1/8 that of lightweight fireclay brick and 1/10 that of lightweight and heat resistant lining. Ceramic fiber as lining has prominent insulation performance. Ceramic fiber as lining is easy to construct: Expansion gap is not needed during the construction process. Construction personnel can start to work after basic training and construction technology has little effect on the heat insulation effect of lining.

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