Comprehensive protection of the metal jet from oxidation
23.05.2017
Plates MKRPG-400
MKRPG-400 plates are made of refractory fiber of mullite-siliceous composition, which is produced by melting aluminum and silicon oxides in an electric furnace with subsequent fiber formation by blowing. To give the material strength, a clay binder is added to the fiber, the products are made by the method of vacuum pressing.
MKRPG-400 plates are a fairly strong and technological insulating material. They are easily cut, cut with a hacksaw, cut out the necessary shapes, glued with inorganic glues or fixed with metal fasteners. During installation, take into account possible linear and volume shrinkage during heating.
According to the customer's requirements, a hydrophorbising additive is introduced into the composition of the plate.
Properties
- high thermal resistance
- low thermal conductivity
- low density
- low heat capacity
- the material belongs to the non-combustible class
- high chemical resistance
- thermal shock resistance
- good workability
- good electrical insulating properties
- effective sound absorption
Fibrous plates MKRPG-400 are chemically resistant to the effects of acids and alkalis. When using at high temperatures, it is necessary to protect against the effects of concentrated alkalis, hydrofluoric and phosphoric acids.
Plates are more resistant to temperature effects in oxidizing and neutral environments.
In a reducing environment, thermal insulation properties decrease.
Application
- thermal insulation of forge furnaces, heating wells
- reforming furnaces, catalysis, air heaters
- ceramic firing furnaces, glass production furnaces
- insulating layers of air heaters, gas ducts, smoke pipes, heat generators
- heat-compensating lining layers made of dense refractories or concrete
- construction of buildings, boiler houses, steam pipelines
- insulation of boilers, electric furnaces, gas heating furnaces
- shipbuilding
- transport screens, covers, insulation of mobile thermoses
Advantages
- effective thermal insulation with fuel economy
- has sufficient structural strength
- quick and easy installation
- reducing consumption of ceramic refractories
- reducing the metal capacity of the lining structure
- reduction of installation time
- durability
- does not contain asbestos
Technical specifications
|
Brand
|
MKRPG-400
|
|
Density, no more, kg/m3 |
400 |
|
Application temperature is maximum, ° С |
1260 |
|
Temperature of long-term use, °С |
1150 |
|
Mass loss at 1000 °C, % |
8 |
|
Thermal conductivity at 600 °C, no more, W/(m K) |
0.28 |
|
Heat capacity at 1000 °C, kJ/(kg K) |
1,047 |
|
Bending strength limit, N/mm2 |
0.25 |
|
Chemical composition, % |
|
|
AI2O3, not less |
40 |
|
SiO2, no more |
50 |
|
(AI2O3+SiO2), not less |
90 |
Thermal conductivity of the material
|
T, ° С |
200 |
400 |
600 |
800 |
1000 |
1200 |
|
λ , W/(m K) |
0.09 |
0.14 |
0.22 |
0.25 |
0.31 |
0.38 |
Dimensions. Release forms
|
Length, mm |
530-700 |
|
Width |
400-500 |
|
Thickness |
20, 30, 40, 50, 60 |
MKRPG-400 slabs are produced in the form of standard slabs, strips, covered with auxiliary materials (foil insulation, laminating layer, etc.) and other forms according to consumer requirements.