We have a mature process and modern management model, committed to the development of High Strength Alkali Resistant Castable, Zirconia Foam Ceramic Filter, Stuffing Sand, and manufacture products that meet the needs of target customers. With the first-class products, excellent service, fast delivery and the best price, we have won highly praise foreign customers. In order to adapt to changes in the social development environment, companies need to build a safer and more complete automated information platform to support the individual needs of various departments and employees, so as to promote the sustainable development of the company. We intention to get a top class supplier for worldwide OEM and aftermarket! With the advantages of complete varieties and reasonable prices, our products enjoy a high position among consumers and have won high praise from customers.
1,Product description:
Sintered mullite bricks made from synthetic calcined mullite are widely used in high-grade kilns such as hot blast stoves and blast furnaces because of their excellent suddenly-changing temperature resistance,good wear resistance, low creep rate performance and low reburning line change rate.
![IW`E6M6%W7Q~Y88QR{]S6X6](/Content/uploads/2021433345/2021031109114392990c39883744168e5220ce86d5222c.png)
2,Index of Mullite Brick for Hot Blast Furnace:
Item | JM-65 | JM-70 | JM-80 |
Al2O3 % | 65 | 70 | 80 |
Fe2O3 % | 1.5 | 0.5 | 0.5 |
Refractoriness ℃ | 1790 | 1790 | 1850 |
Apparent porosity % | 24 | 20 | 21 |
Bulk density g/cm3 | 2.5 | 2.55 | 2.7 |
Cold crushing strength Mpa | 60 | 65 | 75 |
Refractoriness under load T2,℃ | 1550 | 1700 | 1700 |
Reheating linear change % | 1400℃×2h ＋0.2～-0.1 | 1450℃×2h ＋0.2～-0.1 | 1500℃×4h ＋0.2～-0.1 |
Creep rate 0.2MPa×50h,% | 1350℃,0.8 | 1450℃,0.6 | 1500℃,0.6 |
Thermal shock resistance, times | 30 | 25 | 20 |
3,Knowledge of Mullite Brick for Hot Blast Furnace:Alumina content of products is generally 65-75%, mineral composition is mainly mullite phase, a small amount of corundum phase, glass phase.Refractoriness is greater than 1790℃, refractoriness under load is greater than 1550 ~ 1700 ℃.The products are divided into sintered mullite bricks and fused mullite bricks according to different production processes, according to the difference of alumina, it can be divided into three grades: JM-65, JM-70 and JM-80.The crystallization of fused mullite brick is larger than that of sintered mullite brick, and its thermal shock resistance is better than that of sintered product. The products are mainly used in hot blast stove, blast furnace, regenerator of glass furnace, petroleum cracking equipment, dry quenching coke oven, etc.
4,Main features of Mullite Brick for Hot Blast Furnace:
1, High refractoriness, ＞1790℃
2,High refractoriness under load, 1550~1700℃。
3, The creep rate at high temperature is low, 1500℃×25-50h,≤0.6%
4, Good thermal shock resistance, 1100℃, water cooling, > 20 times.
5, Good corrosion resistance of acid-resistant slag
5,Factors influencing the properties of mullite bricks:
1, The Value of Al2O3/SIO2 in Products
2, Types and Contents of Impurities in raw materials
3, Particle size of raw materials, firing temperature and holding time of products
6,Cautions in the use of Mullite Bricks
1,Contact with alkaline substances is prohibited in high temperature environment
2, It is not suitable to use in high water vapor content environment.
7.Good feedback of product use effect,the products have been exported to Australia, Oman,Kenya,and India.
8.We are a professional supplier, who can provide customers with free product technology, use and other issues.
Do you want to find a professional supplier of refractory products?
Do you want to find a stable and credible supplier?
Then please contact with us
Contact me:Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
Through on-time logistics delivery, our Refractory Ball High Alumina Ball for Hot Blast Stove will be delivered to customers quickly and safely. Our company is willing to take a sincere attitude, high quality, perfect service, continuous innovation, and look forward to good cooperation with customers abroad. With the ultimate customer experience and the business philosophy of equality, innovation, openness and mutual benefit, we have gained a good reputation in the industry.
Hot Tags: mullite brick for hot blast furnace, China, manufacturers, suppliers, factory, use, property, Sintering Corundum Mullite Brick, Phosphoric acid bonded brick, Performance of Fused Cast a Alumina Brick, Wear resistant PVC sports floor, 110kg m3 density PU board, High Strength Alkali Resistant Castable
