Andalusite
The industrial use of andalusite is mainly due to its high temperature resistance. After it is heated to 1350°C under normal pressure, it begins to transform into acicular mullite parallel to the original crystal. Mullite crystal is the only stable form of aluminosilicate under high temperature, and its theoretical conversion rate is 87.64%. Here are some features of it:
1.High temperature resistance
2.Low thermal expansion
3.Good thermal shock resistance
Product Description
Andalusite is a kind of aluminosilicate mineral, which is homogeneous and polymorphic with kyanite and sillimanite. It is the raw material for making refractory materials and porcelain in spark plugs. It is a typical low-grade thermal metamorphism. Mineral, commonly found in argillaceous rocks contacting metamorphic zones. It is mainly formed under the conditions of high geothermal gradient and low pressure-to-temperature ratio.
Application
Andalusite can be used to make steelmaking furnace lining materials such as refractory bricks, refractory castables and refractory coatings.Its high melting point and excellent refractory performance enable it to withstand high temperature and chemical attack, and protect the internal structure of the steelmaking furnace from the corrosion of high temperature charge and furnace gas.
In thermal power generation equipment such as coal-fired power plants and gas-fired power plants, it is often used to manufacture refractory materials for high-temperature parts such as combustion chambers, boilers, chimneys, and cogeneration devices.Its fire resistance and thermal shock resistance allow it to withstand the effects of high temperature combustion and thermal cycling.
In cement kilns, it can be used as the main refractory material for the lining and furnace of the kiln.It can withstand the action of high temperature and corrosive gases in cement kilns, ensuring the normal operation and long life of the kiln.Andalusite compensation bricks have low thermal expansion coefficient and good thermal shock resistance, which can reduce the cracking and fracture of bricks caused by thermal stress.
- Technical Sheet
- Production Process
- Packing & Shipping
| Grade | Al₂O₃ | SiO₂ | Fe₂O₃ | TiO₂ | CaO | MgO | Na₂O | K₂O | Size |
| 55% | 55 | 42.5 | 1.2 | 0.3 | – | – | 0.5 | 0-1mm,1-3mm,200mesh | |
| 56% | 56 | 41.5 | 1.2 | 0.3 | – | – | 0.5 | 0-1mm,1-3mm,3-5mm,200mesh | |
| 57% | 57.6 | 40.3 | 0.8 | 0.25 | 0.1 | 0.15 | 0.1 | 0.2 | 0-1mm,1-3mm,3-5mm,200mesh |
| 58% | 58.9 | 38.5 | 0.8 | 0.15 | 0.2 | 0.1 | 0.1 | 0.35 | 0-1mm |
Other Products You May Be Interested In
More Information About Jucos Refractory Andalusite
JUCOS providing high grade refractory raw material,refractory brick and monolithic refractories to globe industrial high temperature furnace. Focus on refractory material selection,technical solutions,supplying,repairing,construction.
China leading refractory supplier with competitive price and reliable quality.
A1:It is a natural ore and does not contain harmful substances.
A2:The life of andalusite refractories depends on many factors, such as service conditions, quality and design of the material, etc. Generally speaking, under normal operation and proper maintenance, it can have a relatively long service life, usually several years or even longer.
A3:Compared with other refractory materials, it has higher aluminum oxide and silicon oxide content, which makes it have better high temperature resistance and chemical corrosion resistance.
A4:The MOQ usually is 3 tons
A5:Of course,we can.You can contact us to get some free samples.