Andalusite brick
With high Al2O3 content and low impurity content, andalusite is an ideal high-grade refractory material. Andalusite refractory bricks have excellent low thermal conductivity, high resistance to slag corrosion, and creep resistance. Refractory alunite bricks have high thermal strength, bassa porosità, resistance to chipping and compression drop deformation, resistenza allo shock termico, and good refractoriness.
Andalusite bricks are mainly used in cooling walls, coke oven doors, hot blast stove lining, lattice, and so on in blast furnace, chimico, and ceramic industries. Refractory bricks can also be applied to the top of some metallurgical furnaces, the effect is better than silica bricks.
PER Refractories is a professional manufacturer of andalusite refractory bricks. We offer high-quality andalusite bricks and unfired andalusite mattoni. You can contact us in time to get the economico andalusite bricks price.
Parameters of Standard Andalusite Bricks
| Index | GX-135 | GX-140 | GX-150 | |
| Al2O3 | (%) ≥ | 65 | 65 | 65 |
| Fe2O3 | (%)≤ | 1.5 | 15 | 1 |
| Densità apparente | (g/cm3) ≥ | 2.4 | 2.5 | 2.6 |
| Porosità apparente | (%)≤ | 22 | 22 | 20 |
| Forza di frantumazione a freddo | (MPa) ≥ | 60 | 60 | 80 |
| 0.2Mpa Refractoriness Under Load | ℃≥ | 1520 | 1550 | 1600 |
| Refrattarietà | ℃ ≥ | 1790 | 1790 | 1790 |
| (0.2MPa, 20-50H, %)Creep rate | (%) | 0.2 | 1400℃ | 1400℃ |
| 0.2 | 0.2 | |||
| Resistenza agli shock termici (1000℃, water, quenching, cycle) | ℃ | 15 | 20 | 20 |
Advantages of PER's Andalusite Refractory Bricks:
1. High strength and wear resistance compared with traditional high alumina bricks.
2. Excellent thermal shock stability. Increase the service life of kiln lining and reduce the cost of refractory materials.
3. Excellent erosion resistance.
PER manufactured andalusite refractory bricks are suitable for blast furnaces, altiforni caldi, equalization furnaces, steel ladles, forni rotativi per cemento, ceramic tunnel kilns and glass kilns, e altre industrie.
The Difference Between Andalusite Mullite Bricks and Andalusite High Alumina Bricks
Andalusite High Alumina Brick
Andalusite high alumina bricks are made of andalusite as the main raw material, with bauxite added, after high-pressure molding, asciugatura, and firing at 1500℃.
Andalusite high alumina brick is characterized by high-temperature resistance, high softening temperature under load, and low creep rate at high temperatures, and not used in the volume of high-temperature volumetric stability, the use of the coefficient of thermal expansion is a small, low coefficient of thermal conductivity.
Andalusite Mullite Brick
Rutilated mullite brick is a kind of refractory brick made by adding different ratios of rutilated mullite and mullite to the composite.
This kind of fire brick has the advantages of good oxidation resistance, strong refractoriness, elevata resistenza alla compressione, low specific gravity, good peeling resistance, high-temperature flexural strength, e lunga durata.
Andalusite refractories 1830 ℃, chemical corrosion resistance, adding andalusite in high alumina refractory bricks, can make high alumina bricks with abrasion resistance and higher softening temperature under load, better resistance to rapid cold and heat performance. It can densify the brick joints at high temperatures and improve the overall compactness of high alumina brick masonry, thus improving the resistance to slag permeability.
In breve, erythrite mullite and erythrite high alumina bricks have the same but also have a big difference, erythrite mullite bricks than erythrite high alumina bricks price is higher than erythrite high alumina bricks high-temperature erosion resistance, erythrite mullite bricks good flexibility, peel resistance is a little stronger.
Characteristics of Andalusite Bricks
Andalusite refractory bricks are made of andalusite as raw material, adding silica powder, mullite powder, and other powders.
These materials are in proportion to the addition of binder, and strict control of raw material particle size, grade, and its TiO2, R2O, and other impurities, dopo il dosaggio, miscelazione, modanatura, asciugatura, e cottura ad alta temperatura.
This can meet the modern blast furnace hot blast furnace different parts, different working environments use, to improve the service life of the blast furnace hot blast furnace is of great significance.
Andalusite refractory fire bricks will be transformed into mullite by heating, and after the transformation, it has a higher refractory performance.
Refractories can reach more than 1800 ℃, erythrite bricks have few impurities, and high-temperature strength decline is very small.
It is also resistant to rapid cold and heat, has high mechanical strength, strong thermal shock resistance, strong slag resistance, high load conversion point. And it has very high chemical stability (even insoluble in hydrofluoric acid) and very strong chemical corrosion resistance.
Industrial use of andalusite, mainly to take its role in high-temperature resistance. Andalusite at atmospheric pressure heated to 1350 ℃, after the beginning of the transformation into needle mullite. Mullite crystals are the only form of aluminosilicate that is stable at high temperatures.
Informazioni su PER Refractories Company
PER Società di refrattari si trova nella città di Xinmi, Provincia di Henan, la città natale di materiali refrattari in Cina. La nostra azienda è un'impresa refrattaria basata sulla tecnologia che integra R&D, produzione, saldi, e servizio tecnico. Le ricche risorse e l'eccellente qualità del territorio forniscono condizioni superiori senza pari per la produzione di materiali refrattari. I nostri prodotti principali sono mattoni di argilla refrattaria, mattoni refrattari ad alto contenuto di allumina, mattoni refrattari di silice, mattoni refrattari al magnesio, mattoni di mullite, mattoni isolanti, e altri prodotti resistenti alle alte temperature.
PER considera la cosa più importante, crediamo nel prendere sul serio ogni prodotto e nel ricevere sinceramente ogni cliente. Fornire risultati rapidi e di alta qualità a tutti i nostri clienti. PER Refractories sarà il produttore di refrattari più affidabile e il partner affidabile.
Azienda PER refrattario è la base di produzione di verde, risparmio energetico, e nuovi materiali refrattari rispettosi dell'ambiente. La nostra azienda ha superato ISO9001:2008 certificazione internazionale del sistema di qualità e GB/T24001-2004 / ISO14001:2004 certificazione del sistema di gestione ambientale, certificazione dell'agenzia di ispezione di qualità aziendale. I nostri prodotti sono venduti bene in più di 20 paesi di tutto il mondo. Sono i prodotti refrattari preferiti per la metallurgia, non ferroso, petrolchimico, bicchiere, ceramica, e altre industrie refrattarie.
