Refractory Silica Brick for Hot-Blast Stoves S-95

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Loading Port:
Tianjin
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TT OR LC
Min Order Qty:
12 m.t
Supply Capability:
30000 m.t/month

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General Information
CMAX silica brick is a kind of acid refractory product which is mainly made of tridymite and cristobalite, and a small amount of quartz and vitreous. CMAX Silica bricks are made from high quality quartz tail sand, lime and mineralizing agent through the process of crashing, screening, mixing, pressing, drying and sintering.

 
Application

Coke oven

Hot blast stoves

Glass furnace

Features
High refractoriness under load

Superior resistance to acids (including oxidizing)
Resistance to chlorine 
Resistance to thermal shock and pressure changes
Low thermal and chemical expansion


Technical Data

  ITEM

For Hot-Blast Stoves

                   For Glass Furnace

  S-94

S-95

  S-95B

  G-94

  G-95A

  G-95B

  G-96A

  G-96B

  SiO2, %

  ≥ 94

  ≥ 95

  ≥ 95

  ≥ 94

  ≥ 95

  ≥ 95

  ≥ 96

  ≥ 96

  Fe2O3, %

  ≤ 1.5

  ≤ 0.5

  ≤ 1

  ≤ 1.5

  ≤ 1.2

  ≤ 1.2

  ≤ 0.8

  ≤ 1

  Residual Quartz, %

  ≤ 1

  ≤ 1

  ≤ 1

  ≤ 1

  Apparent Porosity

  ≤ 23

  ≤ 23(24)

  ≤ 21(23)

  ≤ 24

  ≤ 22(24)

  ≤ 22(24)

  ≤ 22(24)

  ≤ 22(24)

  True Density, g/cm 3

≤ 2.35

  ≤ 2.34

  ≤ 2.33

  ≤ 2.35

  ≤ 2.35

  ≤ 2.34

  ≤ 2.34

  Cold Crushing Strength, Mpa

  ≥ 29.4

  ≥ 30(27)

  ≥ 30(20)

  ≥ 30

  ≥ 30(35)

  ≥ 30(35)

  ≥ 30(35)

  ≥ 30(35)

  Refractoriness Under Load, º C

  ≥ 1650

  ≥ 1600

≥ 1630 

  ≥ 1660

  ≥ 1650

  ≥ 1680

  ≥ 1670

  Permanent Linear Change, %

  1500º CX4h, ± 0.2

  1450º CX2h, ± 0.5

 Refractory Silica Brick for Hot-Blast Stoves S-95

 

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Q:What role does silica play in refractories?
The production of clay brick refractory clay raw material is natural, its main mineral is kaolinite (formula Al2O3 - 2SiO2 - 2H2O), clay brick containing SiO2 in 45% ~ 65%, belongs to the weak acid refractory materials, have a certain ability to resist acid slag, but easy to be alkaline slag erosion.
Q:The high thermal conductivity of silica brick and traditional brick what is the difference?
Tridymite content high thermal conductivity silica brick is 70%, tridymite content of traditional brick is 60%, tridymite content high thermal conductivity of silica brick than tridymite high content of 10% traditional brick,
Q:How to judge the quality of brick, clay brick, high alumina brick furnace from the appearance?
Mainly from the impurities to determine how much, generally less impurity single color brick.
Q:The formula in the refractory brick, and firing curve, who knows?
Iron scale powder 0.45-0.55%, cement 0.9-1.1%, lime milk 6.5-7.5%, pulp 1.95-2.2%, the silica powder, perlite will be added to the wet mill in proportion, and then add iron scale powder, cement, dry roller 1-2 minutes later
Q:The introduction of silica brick
Acidic silica brick refractory material, has good acid resistance and slag erosion, softening temperature is as high as 1640 to 1670 DEG C, in the long-term use volume is relatively stable under high temperature.
Q:Such purpose and scope please give me detailed points thank you
Acid refractory brick is mainly composed of tridymite and cristobalite and quartz and a small amount of residual glass phase.
Q:Semisilica brick interpretation
High temperature volume stability. Volume change is small.
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:Semisilica brick, clay brick, high alumina brick and what is the difference?
The share of A12O3 and SiO2 is different
Q:How to improve the thermal conductivity of the coke silicabrick rate?
To improve the thermal conductivity of silica brick for coke oven rate method:Manufacture of high density and high thermal conductivity of silica brick, adding additives such as CuO, Cu2O, TiO2, Fe2O3, (FeO), can improve the thermal conductivity of silica brick.

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