Lightweight insulating castables for high temperature industrial furnaces

August 03, 2018

Lightweight insulating castable refractory are mainly used for lining of thermal equipment such as high temperature industrial furnace. The material has the advantages of moderate strength and good thermal insulation performance.Lightweight insulating castable is a refractory castable made of aluminate cement, high alumina fine powder, ceramsite and some additives.

Such refractory castables have the characteristics of light weight,high strength,acid and acid proof gas corrosion, insulation, low fineness and so on. Since the lightweight insulation castable is a powdery and granular refractory made of some binder,such as alumina,and has a high fluidity,it is mainly formed by casting in the construction.

The aggregate of lightweight insulating castables is widely used. Some scrap or cut corners are broken into pellets, which can be used as lightweight insulating castables aggregates. A series of processes can be made into lightweight insulating castables with smaller bulk density and higher performance. During the construction of the lightweight insulating castable, we should pay attention to the shorter vibration time, which can avoid the separated layer of lightweight aggregate and influence the performance of the castable.

Jundao (Henan) New Material Co.,Ltd specialized in the production of fireclay brick, insulating brick, high alumina brick, castable refractory. If any requirement or comments, welcome.

Lightweight Insulation Castable Data

Item

Bulk Density

(g/cm3)

Thermal Conductivity (W/m·k)

Linear Change Rate
(3h at 800℃, %, Max)

Cold Crushing Strength

(Mpa, Min)

200℃

600℃

800℃

24H at 110℃

3H at 900℃

lightweight insulation
castable

0.8

0.17

/

0.21

0-1.0

3.0

3.6

1.0

0.17

0.21

/

3.2

3.98

Application

High chimneys, high temp flue and duct lining, oil, chemicals, nonferrous metallurgy and other industrial acid proof projects.

Remark

ISO Certificated; Customized

 

 

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