Glass Furnace Application Refractory Silica Brick

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Product Description:

Specifications

1.high temp Refractoriness Under Load
2.good stability under high temp
3.low pollution
4.Refractory Silica Brick

Silica Bricks for Glass Furnace

,there are series silica bricks for glass furnace, BG-95, BG-96A, BG-96B. high purity silica for brick mading, with science material proporation and technic of products. different calcined machine, automation, short cycle of production.


Item

BG-94

BG-95

BG-96A

BG-96B

Chemical composition

SiO2

94

95

96

96

Fe2O3

1.5

1.5

0.8

0.7

Al2O3+TiO2+R2O

1.0

0.5

0.7

Refractoriness °C

1710

1710

1710

1710

Apparent Porosity%

22

21

22

22

Bulk Density g/cm3

1.8

1.8

1.8

1.8

True Density,g/cm3

2.38

2.38

2.34

2.34

Cold Crushing Strength Mpa

24.5

29.4

35

35

0.2Mpa Refractoriness Under Load T0.6 °C

1630

1650

1680

1680

Permanent Linear Change On Reheating(%)1500°CX2h

0~+0.3

0~+0.3

0~+0.3

0~+0.3

20-1000°CThermal Expansich10-6/°C

1.25

1.25

1.25

1.25

Thermal Conductivity (W/MK) 1000°C

1.74

1.74

1.44

1.44



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Q:Can iron oxide be used as refractory material?
Iron oxide can not be used as refractory material, but it can be used as refractory additive. Iron oxide can be used as pigment
Q:Common bond brick?
Lime should contain a lot of active CaO, I decompose CaCO3 and MgCO3 not more than 5%, Al2O3+Fe2O3+SiO2 no more than 5%. When the content of large particles, burned Ca-CO3 and over burned lime, the product produced caves, affecting the quality of products.
Q:How to improve the thermal conductivity of the coke silicabrick rate?
The content of SiO2 is 98.23% crystalline silica as raw material, with sulfite pulp liquid as binder, millscale and lime as mineralizer, by Jin Hongshi (TiO2) as additive, can improve the rate of thermal conductivity of silica brick for coke oven. When the rutile content is 1.5%, the coefficient of thermal conductivity of silica brick for coke oven is 2.66W/ (m.k).
Q:What is the silica refractory products?
High silicon content in high temperature expansion sintering temperature between 1390-1410 in furnace arch
Q:Can not use it two brick
The softening temperature is up to 1640~1670 DEG C, and the volume is stable at high temperature for a long time.
Q:The difference between clay refractory bricks and refractory brick in the application.
Clay brick features good thermal shock resistance and low price, but high temperature performance is not well integrated, and the long-term use temperature is not higher than 1300 degrees. It is widely used in low temperature parts of various kilns.
Q:What are the main constituents of refractory bricks?
(a) containing refractory brick brick, refers to more than SiO293%, is the main varieties of acid resistant brick. It is mainly used for coke oven building, also used in furnaces all kinds of glass, ceramic and carbon calciner, refractory brick arches and other load-bearing parts, is also used in high temperature bearing part of hot blast stove, but should not be used in thermal equipment below 600 DEG C and the temperature fluctuation in the.
Q:The difference between clay refractory bricks and refractory brick in the application??
Clay brick features good thermal shock resistance and low price, but high temperature performance is not well integrated, and the long-term use temperature is not higher than 1300 degrees. It is widely used in low temperature parts of various kilns.
Q:Why will expand when heated brick
Because the production of raw materials are silica brick, brick with SiO2 content of not less than 95% of silica as raw materials, adding mineralizer and binder, through mixing, molding, drying, sintering and other processes in the system
Q:Common bond brick
When adding ingredients, the amount of lime added shall be converted to CaO, and the amount of addition varies depending on the product, usually fluctuating at 1.5~2.5%. For example, the production of coke oven silica brick, the dosage of CaO is 2.0~3.0%; the production of electric furnace top brick, the dosage of CaO is 1.4~1.75%.

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