High Strength 1790C Aluminum Silicate Refractory Brick
Low Creep High Alumina Bricks
| Refractorienss | ≥1790℃ |
| RUL | ≥1550℃ |
| Creep rate | ≥1400℃ |
| Al2O3 | ≥78% |
| Fe2O3 | ≤1.5% |
| Bulk density | ≥2.7g/cm3 |
Low Creep High Alumina Bricks are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. Its features are excellent high temperature mechanics and chemical corrosion resistance.
If Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent. For example, European countries have stipulated that the lower limit of Al2O3 content for high-alumina refractories is 42%. In China, according to the content of Al2O3 in high alumina bricks, it is usually divided into three grades: Grade I──Al2O3 content>75%; Grade II──Al2O3 content is 60～75%; Grade III──Al2O3 content is 48～60%.
The production process of Low Creep High Alumina Bricks and multi-clinker clay bricks are similar.
The difference is that the proportion of clinker in the ingredients is higher, which can be as high as 90-95%.
The clinker needs to be sorted and sieved to remove iron before crushing, and the firing temperature Higher, such as Ⅰ, Ⅱ high alumina bricks are generally 1500～1600℃ when fired in tunnel kiln.
Production practice in China has proved that before crushing, high-aluminum clinker is strictly sorted and classified, and stored in tiers.
The use of bauxite clinker and combined clay fine grinding method can improve product quality.
Application:
Low Creep High Alumina Bricks used for lining blast furnaces, hot blast stoves, electric furnace tops, blast furnaces, reverberatory furnaces, and rotary kilns. In addition, high alumina bricks are also widely used as open hearth regenerative checker bricks, plugs for pouring systems, nozzle bricks, etc. However, the price of high alumina bricks is higher than that of clay bricks, so it is not necessary to use high alumina bricks where clay bricks can meet the requirements.
1. Iron&steel making industry:
Blast furnace,hot blast furnace(stove),pellet shaft furnace,hot metal ladle,steel ladle, tundish,heating furnace,soaking pit furnace,heat treatment furnace,refining furnace,reheating furnace,metal mixter furnace,annealing furnace, cupola furnace,electric arc furnace,induction furnace,AOD furnace,VOD furnace,etc thermal technology equipment.
2. Non-ferrous Metal industry:
Smelting furnace,refining furnace,reverberatory furnace,converter furnace.
3. Building materials industry:
Cement kiln,glass kiln,ceramic kiln,lime kilns,kiln car,tunnel kiln
4. Energy & Incineration:Coke oven,general boiler,power,generation,boiler,circulating fluidized bed boiler,electric furnace,carbon rosating furnace,waste incinerators.
5. Others: Petrochemical industry furnace.
Product Tags:
|
|
High Strength 1790C Aluminum Silicate Refractory Brick Images
|
