- 14
- Sep
XNUMX단계 고알루미나 벽돌
XNUMX단계 고알루미나 벽돌
1. Advantages of high alumina brick
1. High temperature creep resistance
2. High temperature strength
3. 높은 열 안정성
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 높은 알루미나 벽돌, 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.
물리적 및 화학적 지표:
순위/인덱스 | 고 알루미나 벽돌 | XNUMX차 고알루미나 벽돌 | XNUMX단계 고알루미나 벽돌 | 초고알루미나 벽돌 |
LZ-75 | LZ-65 | LZ-55 | LZ-80 | |
AL203 ≧ | 75 | 65 | 55 | 80 |
Fe203% | 2.5 | 2.5 | 2.6 | 2.0 |
부피 밀도 g / cm2 | 2.5 | 2.4 | 2.2 | 2.7 |
실온에서의 압축강도 MPa> | 70 | 60 | 50 | 80 |
하중 연화 온도 °C | 1520 | 1480 | 1420 | 1530 |
내화도 °C> | 1790 | 1770 | 1770 | 1790 |
겉보기 다공성 % | 24 | 24 | 26 | 22 |
난방 영구 라인 변경 비율 % | -0.3 | -0.4 | -0.4 | -0.2 |