Refractory Ball/ 75% Al2O3 High Alumina Ball Refractoeries for Ball Mill

Refractory Ball/ 75% Al2O3 High Alumina Ball Refractoeries for Ball Mill

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
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We goal to see good quality disfigurement within the manufacturing and provide the most effective support to domestic and overseas shoppers wholeheartedly for Manufacturer of Magnesia Alumina Refractory Ball, Quartz Ceramic Crucible product factory, Sound insulation and fireproof spray coating. No matter what kind of company it is, it has its responsibilities and missions, because this is the goal and direction of all employees' work. In order to adapt to the rapid development of e-commerce environment, expand global business, our compnay has established cooperation with a number of well-known manufacturers.

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.




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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)


The complete variety, novel design, and excellent quality of our Refractory Ball/ 75% Al2O3 High Alumina Ball Refractoeries for Ball Mill have impressed our customers both at home and abroad. Owing to which, we are able to accomplish voluminous production without compromising upon the quality. We will build our greater competitiveness in the market through technological innovation and the development of human resources on the basis of price competitive advantages.

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  • Tel: +86-533-4188518
  • Mob: +8613275332819
  • E-mail: sdwenping@163.com
  • Add: Room 711, NO.3, Yanhe Road, Boshan, Zibo, Shandong, China