Mullite insulation bricks have high refractoriness, mullite insulation bricks can be directly exposed to flames. They have the characteristics of light weight, high strength, low thermal conductivity,
good thermal shock resistance and significant energy-saving effects.
The Characteristics of Mullite insulation fire bricks:
The main material of sintered mullite brick is high alumina bauxite as the main raw material, adding a small amount of clay or raw bauxite as binder, it is made by molding and sintering. Fused
mullite brick with high bauxite, commercial alumina and refractory clay as raw material, adding charcoal or coke fines as a reducing agent, after molding, can adopt the reduction electrofusion
method to manufacture. The crystallization of the electric cast mullite is larger than that of the sintered mullite, and the thermal shock resistance is better than that of the sintered product. Their
high temperature performance mainly depends on the content of alumina oxide and the uniformity of the distribution of mullite and glass.
Specification Of Mullite insulation bricks：
The refractoriness is high, can reach to more than 1790 degrees centigrade. The RUL is 1600~1700 degrees C. The compressive strength at normal temperature is 70 ~ 260MPa. The thermal
shock resistance is good. There are two kinds of mullite bricks: sinserted mullite and fused mullite brick.
| Item | Specification | ||||
| JM23 | JM25 | JM26 | JM27 | ||
| Al2O3 % | ≥40 | ≥50 | ≥55 | ≥60 | |
| Fe2O3 % | ≤1.0 | ≤1.0 | ≤0.9 | ≤0.8 | |
| Bulk Density, g/cm3 | ≤0.55 | ≤0.80 | ≤0.85 | ≤0.9 | |
| CCS, MPa | ≥1.0 | ≥1.5 | ≥2.0 | ≥2.5 | |
| PLC, % | 1230℃×12h | 1350℃×12h | 1400℃×12h | 1450℃×12h | |
| -1.5~0.5 | |||||
| Thermal Conductivity, W/(m·K) | 200±25℃ | ≤0.18 | ≤0.26 | ≤0.28 | ≤0.32 |
| 350±25℃ | ≤0.20 | ≤0.28 | ≤0.30 | ≤0.32 | |
| 600±25℃ | ≤0.22 | ≤0.30 | ≤0.33 | ≤0.36 | |
| 0.05MPa RUL, T0.5 ℃ | ≥1080 | ≥1200 | ≥1250 | ≥1300 | |
| Item | Specification | |||
| JM28 | JM30 | JM32 | ||
| Al2O3 % | ≥65 | ≥70 | ≥77 | |
| Fe2O3 % | ≤0.7 | ≤0.6 | ≤0.5 | |
| Bulk Density, g/cm3 | ≤0.95 | ≤1.05 | ≤1.35 | |
| CCS, MPa | ≥2.5 | ≥3.0 | ≥3.5 | |
| PLC, % | 1510℃×12h | 1620℃×12h | 1730℃×12h | |
| -1.5~0.5 | ||||
| Thermal Conductivity, W/(m·K) | 200±25℃ | ≤0.35 | ≤0.42 | ≤0.56 |
| 350±25℃ | ≤0.37 | ≤0.44 | ≤0.60 | |
| 600±25℃ | ≤0.39 | ≤0.46 | ≤0.64 | |
| 0.05MPa RUL, T0.5 ℃ | ≥1360 | ≥1470 | ≥1570 | |
Application of Mullite insulation bricks:
Mainly used for hot blast stove of blast furnace and furnace bottom and furnace, glass furnace regenerator, sintering kiln, petroleum cracking dead lining system.
Packaging :
Packed by sea-worthy wooden pallet + shrink wrapped + carton For example, Standard size of Fireclay brick : 230x114x65mm Shipping : 384pcs/plt x 18plts in one 20 feet container;
Why choose us?
1.Abundant Experience. Rongsheng Group have over 20 years experience in the refractory industry and we have a deep understanding of the materials and applications we work with. We can
provide expert advice and guidance to help customers find the best solutions for their needs.
2.Quality products. We pride ourselves on providing high-quality refractory products that are made to last. Our materials are carefully sourced and tested to ensure they meet our strict
standards.
3.Competitive Price. We offer competitive price on all of our products without sacrificing quality and make the products competitive in your market.
4.Customization. We understand that every customer is unique, which is why we offer customized solutions tailored to their specific requirements. Whether it’s a custom shape or size, we can
work with customers to create the ideal product for their application.
5.Safety. We take safety seriously and ensure that all of our products meet safety standards. Safty packing, prompt delivery time, and excellent after-sales services.
6.Large stocks. With a large stock of products on hand, we can better serve our customers, save money, and gain a competitive edge in their industry.
7. Overall solutions. We offer optimal and comprehensive solutions to supply the necessary refractory material for your high temperature kiln.
So choosing us is the right choice for you.If you are interested in our products or if you have any question, pls feel free to contact us at any time. We will reply as soon as possible.
