Product Description
China refractory brick manufacturer factory price 80% alumina content SK40 high alumina bricks for industrial furnaces
SK40 High alumina refractory brick, that is, alumina content in 80% or more of an aluminum silicate refractory. Made of bauxite or other raw materials of higher alumina content after molding and calcining. High thermal stability, refractoriness above 1770℃. Good slag resistance.
Usually divided into three categories:
Ⅰ: Al2O3 content of 75% or more;
Ⅱ: Al2O3 content is 60% ~ 75%;
Ⅲ: Al2O3 content is 48% ~ 60%;
The fireproof degree of high alumina brick is higher than that of clay brick and semisilicite brick, up to 1750~1790℃, which belongs to senior refractory material.
Because Al2O3 is high in high aluminum products, less hybrid mass and less vitreous, the softening temperature of load is higher than that of clay bricks. However, the softening temperature of load is still lower than that of silicon bricks due to the lack of mesh structure formed by mullite crystallization.
There are more Al2O3 in the high alumina brick, which is close to the neutral refractory material and can resist the corrosion of acid slag and alkaline slag. Due to the SiO2 contained in the brick, the ability of alkali slag is weaker than acid slag.
Technical Data
China refractory brick manufacturer factory price 80% alumina content SK40 high alumina bricks for industrial furnaces
High alumina brick technical data:
| Item | High Alumina brick |
| International Code Name | SK36 | SK37 | SK38 | SK40 |
| Chinese Code Name | LZ-55 | LZ-65 | LZ-75 | LZ-80 |
| Al2O3 ,% | ≥55 | ≥65 | ≥75 | ≥80 |
| Fe2O3, % | ≤2 | ≤2 | ≤2 | ≤2 |
| Refractoriness℃, min | 1770 | 1790 | 1790 | 1790 |
| Apparent Porosity% | ≤22 | ≤23 | ≤23 | ≤21 |
| Bulk Density g/cm3 | 2.25-2.35 | 2.25-2.35 | 2.25-2.35 | 2.25-2.35 |
| Cold Crushing Strength Mpa | ≥44 | ≥49 | ≥54 | ≥65 |
| Refractoriness Under Load T0.2 ℃,min | ≥1470 | ≥1500 | ≥1520 | ≥1530 |
| Permanent Linear Change On Reheating | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 |
Packaging & Shipping
Packaging of High Alumina Brick
1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,
Shipping of High Alumina Brick
1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quality and quantity guaranteed, and also in accordance with the contract and customer's requirement completely.
Why Choose Us
Our competitive Advantage:
1.Competitive Price. Make the products competitive in your market.
2.Quick Response:We promise quick response at the very first moment when we received your request. 3.Superior Customer Service:The company provides after sales service ensuring customer’s satisfactions,we believe in Long term partnership bringing loyalty.
4.We had been on this filed for many years and we have our own research team,the prouduction process could be concrolled strictly.
5.We have developed stable customer base overseas and kept long-term cooperation.
