Phosphate Bonded High Alumina Brick
Phosphate bonded high alumina bricks are non-fired bricks, made from high alumina bauxite clinker as the main raw material, using phosphate solution as the bonding agent, after semi-dry compression molding and heat treatment.
- Main Composition: Al2O3 60%~70%
- Application: Cement Rotary Kiln
- Raw Material: Bauxite
- Color: Grey
- Cold Crushing Strength: ≥70 Mpa
- Bulk Density: ≥2.75g/cm3
- Capacity: 1000 MT per month
- Package: Export wooden pallets
High quality refractory bricks
Product Details
Phosphate Bonded High Alumina Brick for Sale
Description of Fireramo Phosphate Bonded High Alumina Brick
Phosphate bonded high alumina brick is a new type of environmentally friendly refractory bricks, this kind of bricks are made of high alumina bauxite clinker as the main raw material, using phosphate solution as the binding agent, and then made into chemically bonded refractory products after semi-dry-pressing and molding, and then heat-treated in 400~600℃.
Phosphate bonded high alumina bricks in the use of the process will appear in the load softening temperature increases, porosity reduction, bulk density increases, flexural strength increased significantly, phosphate (or phosphoric acid) can improve the quality of high alumina bricks, prolonging its service life. Phosphate bonded high alumina bricks are suitable for cement kilns, electric furnace roofs, steel ladles and so on.
Phosphate bonded high alumina brick belongs to the no-firing brick, compared with the fired high alumina brick, phosphate bonded high alumina brick has stronger anti-peeling performance, but the load softening temperature is lower, and the corrosion resistance is weaker. In order to avoid large shrinkage of the products during high temperature use, heating expansion raw materials such as bluestone, silica nepheline, chlorite, silica and so on need to be added to the ingredients. Through the addition of these materials, phosphate bonded high alumina bricks load softening temperature increases, porosity decreases, bulk density increases, flexural strength increased significantly, phosphate (or phosphoric acid) can improve the quality of high alumina bricks, prolonging its service life.
Characteristics of Fireramo phosphate bonded high alumina bricks
Excellent thermal shock resistance
Phosphate-bonded high alumina bricks can withstand rapid temperature changes without damage, and can be used in applications with frequent temperature fluctuations.
Good thermal stability
The phosphate bond remains stable at high temperatures and is not susceptible to deformation or cracking.
Good chemical stability
Phosphate bonded high alumina bricks have good resistance to acids, alkalis, oxidizers and other chemicals and are not easily corroded.
High strength and wear resistance
Phosphate bonded high alumina brick has high density and strength, it has strong resistance to mechanical abrasion.
Easy to install
Phosphate-bonded high alumina bricks are easy to install and can be replaced quickly if damaged, minimizing downtime and maintenance costs.
Applications for Fireramo phosphate-bonded high alumina bricks
Phosphate bonded high alumina bricks have a low load softening temperature of around 1350°C, but have a high wear resistance, and are mostly used in rotary kiln transition belts, cooling belts, grate coolers, kiln hoods and other parts of the kiln. In addition, phosphate bonded high alumina bricks can also be used in the following applications.
Steelmaking
Phosphate bonded high alumina bricks are used for the lining of ladles, intermediate ladles and other high temperature steel making equipment and have excellent resistance to thermal shock, wear and corrosion.
Glass Manufacturing
Phosphate bonded high alumina bricks are used in the construction of glass furnaces and offer excellent resistance to thermal shock and reduce the risk of glass contamination.
Blast furnace lining
Phosphate-bonded high alumina bricks are used for lining blast furnaces, especially large and very large blast furnaces.
Cement industry
Phosphate bonded high alumina bricks are used for the lining of vertical cement kilns, rotary kilns and other high temperature kilns.
Non-ferrous metal industry
Phosphate bonded high alumina bricks are used for the inner lining of high temperature furnaces such as zinc smelting furnace and copper smelting furnace.
Power industry
Phosphate bonded high alumina bricks can be used for the lining of high temperature kilns such as coal-fired power plants and circulating fluidized bed power plants.
Chemical industry
Phosphate bonded high alumina bricks are used for the lining of various high-temperature chemical reactors, heating furnaces and other equipment.
Phosphate bonded high alumina bricks Specifications
| Item | The phosphate bonded high alumina brick | |
|---|---|---|
| Al2O3(%) | 65~70 | |
| SiO2(%) | 20~25 | |
| Fe2O3(%) | ||
| TiO2(%) | ||
| P2O5(%) | 2~4 | |
| Apparent Porosity(%) | 22 | |
| Bulk Density(g/cm3) | ≥2.75 | |
| Cold Crushing Strength(%) | ≥70 | |
| 0.2 MPa Refractoriness Under Load (ºC) | ≥1470 | |
Specializing in refractory materials for over 20 years, we provide professional refractory solutions for the global high temperature industry.
