- 14
- Sep
Tre-nivå hög aluminiumoxid tegel
Tre-nivå hög aluminiumoxid tegel
1. Advantages of high alumina brick
1. High temperature creep resistance
2. High temperature strength
3. Hög termisk stabilitet
4. Neutral refractories
5. International standard SK refractory bricks (SK-32 SK-34 SK-36)
6. Domestic marked refractory bricks (LZ-55 LZ-65 LZ-75 LZ-80)
2. Description of high alumina brick
High alumina bricks can be divided into ordinary hög aluminiumoxidsten, high refractoriness high alumina bricks, low creep high alumina bricks, phosphate bonded high alumina bricks, and micro-expansion high alumina bricks. With more than 15 years of production experience in various high-alumina refractory bricks, it is suitable for all kinds of high-alumina refractory bricks. Suitable for different kilns in different industries.
3. Definition of high alumina brick:
Aluminum silicate refractory bricks with alumina content greater than 48% are collectively referred to as high alumina refractory bricks. (High alumina brick)
Mainly used for lining of blast furnace, hot blast stove, electric furnace roof, blast furnace, reverberatory furnace, rotary kiln, etc.
Fourth, the characteristics of high alumina bricks
1. Low bulk density, low thermal conductivity and good heat preservation performance.
2. The type of refractory material allows direct contact with fire and is suitable for various atmospheres.
3. The furnace lining has good integrity, long service life, convenient operation and free molding.
4. Product specifications: standard, common, and special-shaped bricks.
5. Because of its low price and general tray packaging, it can be used in various kilns. Among all refractory materials, it is the most widely used.
Five, the size of high alumina brick
Standard size: 230 x 114 x 65 mm;
For other sizes, various shapes can be provided according to customer drawings.
Sixth, the application of high alumina bricks
1. Metallurgical industry furnaces, heat treatment furnaces
2. The melting pot of chemical and construction industries.
3. Waste incinerator, circulating fluidized bed furnace
Seven, packaging and transportation of high alumina bricks
The bricks are packed in wooden pallets, and the pallets are wrapped with a waterproof cover and polypropylene film.
Fysiska och kemiska indikatorer:
Rang/index | Hög aluminiumoxidsten | Sekundär tegel av hög aluminiumoxid | Tre-nivå hög aluminiumoxid tegel | Superhög aluminiumoxidsten |
LZ-75 | LZ-65 | LZ-55 | LZ-80 | |
AL203 ≧ | 75 | 65 | 55 | 80 |
Fe203% | 2.5 | 2.5 | 2.6 | 2.0 |
Bulk densitet g / cm2 | 2.5 | 2.4 | 2.2 | 2.7 |
Tryckhållfasthet vid rumstemperatur MPa> | 70 | 60 | 50 | 80 |
Lastmjukningstemperatur ° C | 1520 | 1480 | 1420 | 1530 |
Eldfasthet ° C> | 1790 | 1770 | 1770 | 1790 |
Tydlig porositet% | 24 | 24 | 26 | 22 |
Värme permanent linjebyte% | -0.3 | -0.4 | -0.4 | -0.2 |