Comprehensive protection of the metal jet from oxidation
23.05.2017
Roll material MKRR-130 it is made by melting pure aluminum and silicon oxides in an electric furnace with the subsequent formation of fibers by the blowing method.
To give the material the shape of a carpet, a small amount of organic or inorganic binder is added to the fibers. Zirconium or chromium oxides are introduced into the melt to increase the fiber application temperature.
Cotton - effective insulating material, which is used as a heat-insulating and heat-compensating material, for the manufacture of refractory and other products of complex configuration (brake pads and others), for high-temperature filtration of gases and others.
Properties of rolled material MKRR-130
- high heat resistance
- low density
- low thermal conductivity
- low heat capacity
- resistance to thermal shocks
- good chemical resistance
- the material is elastic and tightly adheres to the structures
- resistance to vibrations and deformations
- the material is non-combustible
- good electrical insulation properties
- good sound insulation
Application
- thermocompensation of dense refractories and concretes
- filling of cavities in masonry
- repair of refractory linings
- sealing of cracks in masonry
- stuffing of heat-insulating layers of transport trolleys of furnaces
- production of fire-resistant coatings, tocrett-mass
- for fireproof ship deck fillers
- fireproof coatings, glues
- gas pipes, chimneys, heat generators
- slide pipes, steam pipes
- reforming furnaces, catalysis
- construction of buildings, boiler houses, courts
- isolation of tanks for liquefied gases
- filtration of high-temperature gases in an aggressive environment
- sealing of doors, shutters, windows
Advantages
- reduction of fuel consumption
- reduction of consumption of ceramic refractories
- reduction of the metal capacity of the lining structure
- reduction of labor intensity of installation
- reliability and durability
- does not contain asbestos
Dimensions. Forms of release
Packaging of 10 - 16 kg / bag.
Cotton wool is produced in the form of rolls, as well as in shredded form (shortened fibers), without an organic binder, and in other forms according to the technical requirements of customers.
Technical characteristics
| Brand |
MKRR-130
|
MKRC-140
|
| Standard | GOST 23619-79 | |
| Binding | organic, inorganic | |
| Density, no more than, kg / m3 | 130 | 140 |
| Maximum application temperature, ° С | 1260 | 1350 |
| Long term temperature, °С | 1150 | 1200 |
| Weight loss at 1000 °C, no more, % | 0.6 | 0.6 |
| Thermal conductivity at 600 °С, no more than, W/ (m K) | 0.18 | 0.18 |
| Heat capacity at 1000 °C, kDj / ( kg K ) | 1.047 | 1.047 |
| Fiber diameter, no more than, microns | 4 | 4 |
| Chemical composition, % | ||
| AI2O3, within | 51-55 | 48-52 |
| ZrO2, no more | - | 2-4 |
| (Al2O3+SiO2), at least | 97 | 97 |
| Fe2O3, no more | 0.2 | 0.2 |
The fibers are chemically resistant to acids and alkalis.
When used at high temperatures, it must be protected from the action of concentrated alkalis, hydrofluoric and phosphoric acids. Fibers are more resistant to temperature in oxidizing and neutral environments.
In a reducing environment, thermal insulation properties are reduced.
Thermal conductivity at temperature T, ° C, W/(m K)
| 200 | 400 | 600 | 800 | 1000 | 1200 |
| 0,08 | 0,12 | 0,18 | 0,29 | 0,47 | 0,79 |