Comprehensive protection of the metal jet from oxidation
23.05.2017
In the production of refractory mass, powder is first selected, then an inorganic binding component and special additives are added to it. After the chemical reaction, the mixture is stirred to a paste-like consistency, resulting in the formation of a refractory mass. It belongs to a new type of binding material.
According to the application temperature, refractory mass is divided into 4 classes. It should be used together with lightweight mullite bricks of the corresponding class.
Views
- Air refractory mass LYJN-23 LYJN-26
- Red-resistant refractory mass LYJN-28 LYJN-30
Advantages
- High strength, the whole structure of the masonry is beautiful.
- Good tightness, anti-corrosion; long service life.
- Good spiciness and connectivity.
- Excellent resistance of slag, small seams of masonry; ease of use.
- High softening onset temperature at specific load, low shrinkage at high temperature.
Typical application
- In the seams of the brickwork of various industrial furnaces.
Characteristics
| Class | 23 | 26 | 28 | 30 |
| Al2O3 | ≤40 | ≤53 | ≤60 | ≤70 |
| Fe2O3 | ≤1.2 | ≤1.0 | ≤0.9 | ≤0.6 |
| Class. tempo. (°C) | 1300 | 1400 | 1500 | 1550 |
| Bending strength (MPa) | 3.9 | 4.0 | 5.0 | 4.2 |
| Tempo. beginning of softening at specific load (°C) | 1320 | 1420 | 1550 | 1600 |
The above data are obtained in a generally accepted empirical way, and are presented as average figures, fluctuating as changes in practical production environments, and those data are provided as maintenance content, so sometimes they change, it is superfluous to consider them as characteristics of each batch of products.