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Zhengzhou Huaxin Refractory Material Industry Co., Ltd.

Add: Railway Station, Chaohua, Xinmi City, Henan, China, 452385

Tel:86-371-69231111   Fax:86-371-69235777

Web: http://en.hxnc.cn   E-Mail: huaxin@hxnc.cn

Your present location:Home >> Alumina Products >> Alumina Hallow Ball Brick
  • Name: Alumina Hallow Ball Brick
  • Number: 70
  • Time: 2010-07-26
  • Views : 120

immediate inquiry

Our anti-stripping alumina hallow ball products adopt alumina hallow ball as main raw material, high performance micro power as additive, organic material as temporary binding agent and go through high temperature burning in the shuttle type kiln. The product has a lot of closed pores, featuring light weight, high temperature resistance, good heat preservation, small repeated burning shrinkage, excellent thermal shock resistance and strong resistance to corrosive gas and slag. The product can greatly improve kiln thermal efficiency utilization, reduce production period, lighten the kiln weight and realize saving energy and energy reduction. Able to contact flame directly, it is suitable as the lining of cracking furnaces, hot blast heaters, heating furnaces, tunnel furnaces, slab kilns, crucible furnaces as well as various electric furnaces and kilns in metallurgy, refractory, light industry, chemical industry, ceramics, glass, electronics, etc.

Item

Bubble AL2O3 brick

Bubble ZrO2 brick

Model

85Brick

90Brick

99Brick

98Brick

highest application temperature   ℃

1680

1700

1800

2200

Al2O3   %

≥85

≥90

≥99

 

ZrO2   %

     

≥98(With stabilizer)

SiO2   %

≤15

≤8

≤0.2

≤0.2

Fe2O3  %

≤0.2

≤0.2

≤0.2

≤0.2

Bulk density g/cm3

1.4-1.7

1.4-1.7

1.4-1.7

≤3.0

Cold crushing strength MPa

≥12

≥10

≥9

≥8

Refractoriness under load ℃

≥1650

≥1700

≥1700

≥1700

(0.1MPa,0.6%)

Reheating linear change   %

±0.3

±0.3

±0.3

±0.2

(1600℃×3h)

thermal expansion coefficient ×10-6

~7.8

~8.0

~8.6

~9.1

(Room temp-1300℃)

Thermal Conductivity w/(m.k)

≤0.8

≤1.3

≤1.5

≤0.3

(Averaga 800℃)

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