Huachen Refractory

FUSED CAST BLOCK FOR GLASS FURNACE MANUFACTURER

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008618939512185

Email :info@hcrefractory.com

Web : www.azsblock.com

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       Huachen Refractory

     Tel: 0086-371-86503968

     Fax:0086-371-69399809

     Mob:0086-18939512185

     Email:hc01@hcrefractory.com

     Skype: dannylsf01

     Add: 1899th, Zhongzhou Road,

           Guangcheng District, 

           Zhengzhou City, Henan

          Province.China. 450000




Silica Brick
Silica Brick
Silica brick with characters of strong resistance to the acid slag erosion,Excellent thermal shock resistance,High Refractoriness under load Silica as the important refractories, It is widely used for Top crown of glass melting furnace, Coke oven, Cement rotary kiln, lime kiln, ACD launder

Model Number:Silica brick-96A, Silica brick-96B, Silica brick-95A, Silica brick 95B

Certification:ISO 14001-9001

Minimum Order Quantity:10MT

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Silica brick introduction:


Silica brick for glass melting furnace refers to silica refractory products used for  high-temperature parts of glass kiln (but not in contact with glass liquid).Tank kiln is a large masonry with a complex constructed by a variety of refractory materials. Its top crown is mostly made of silica brick, breast wall and port crown, all of which were once made of silica brick. Since the 1970s, some of them have been replaced by fused cast AZS block and fused cast alumina bock,Some glass furnace also use silica bricks for the crown  of the regenerator and for checker bricks


Characters of silica brick for glass melting kiln:


   1. high temperature stable volume, no furnace changes caused by temperature fluctuation, Due to the high refractoriness under load and creep rate of silica brick, glass kiln under 1600 ℃ can keep body not deformation, keep structure stable.
   2.No pollution to the glass liquid.SiO2 is the main component of silicon brick, if there is a drop or surface melting, it does not affect the quality of glass liquid;
   3.Resistance to chemical erosion.The silicon brick of the superstructure is corroded by the gas containing R2O in the glass ingredients, and a smooth metamorphic layer is formed on the surface, so as to lower the erosion speed and play a protective role.
   4.small volume density, this can  reduce the weight of furnace body.


Silica brick specification:


Name

 

Item

Silica brick

         for

coke oven

    G-D

   Silica brick

         for

hot blast stoves

      RG-94

Silica brick

      for

glass furnace

    BG-95

Normal Silica brick





GZ-95

GZ-94

GZ-93

Chemical

Competent

%

SiO2

≥93

≥94

≥95

≥95

≥94

≥93


Al2O3

≤1.5

≤1.0

≤1.0





Fe2O3

≤1.5

≤1.5

≤1.0





CaO

≤3


≤2.5




True densityg/cm3

≤2.34

≤2.34

≤2.34

≤2.37

≤2.38

≤2.40

Apparent porosity,  %

≤22

≤22

≤22

≤22

≤23

≤25

Cold crushing strength, Mpa

≥35

≥35

≥35

≥30

≥25

≥20

Refractoriness

≥1690

≥1710

≥1710

≥1710

≥1710

≥1690

Initial soften point under

load2MPa×0.6%

1650

≥1650

1650

≥1650

≥1640

≥1620

Creep rate%

2MPa·1550×2h


≤1





Permanent linear change on reheating%

1450×2h


+0.2





Thermal expansion% 1000

≤1.25

≤1.25

≤1.26




Application

coke oven

high temperature part of regenerator of hot blast stove

glass furnace

coke oven, hot blast stove, glass furnace and other kinds of industrial furnaces



silica-brick.jpg            silica-bricks.jpg

 


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