Refractory Silica Brick for Hot-Blast Stoves S-97

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Tianjin
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Min Order Qty:
15 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
CMAX Silica bricks are commonly applied in

Coke oven

Hot blast stoves

Glass furnace

Features
High refractoriness under load
High mechanical strength
Excellent thermal shock resistance
Corrosion resistance.

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-97

 

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Q:The specific content is what gb/t2608-2012 brick
The provisions of the brick classification, technical requirements, test methods,
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:Why in the production of the brick to detect the volume density
Product quality control of silica brick.
Q:The introduction of silica brick?
Brick refers to the content of more than 93% products SiO2. Brick with SiO2 content of not less than 96% of silica as raw materials, adding mineralizer and binder, through mixing, molding, drying, sintering and other processes in the system. The higher the content of SiO2 in silica raw material, the higher the refractoriness of the product. According to the use of brick varieties, divided into: coke oven silica brick, brick for hot blast stove, electric stove with brick, brick for glass furnaces. According to the transformation is divided into: standard bricks, tiles, bricks and general special brick etc..
Q:What is the main material of silica brick
Higher high temperature strength. The softening start temperature is 1620~1670 degrees. Long term use at high temperature without deformation. The thermal shock resistance is low (the heat exchange in water is 1~4 times). The natural silica is used as the raw material, and a proper amount of mineralizer is used to promote the transformation of quartz into phosphorus and quartz. Slowly sintered at 1350~1430 DEG C in the reducing atmosphere. When heating up to 1450 degrees, the total volume of 1.5~2.2% expands, and the residual expansion can close the kerf and ensure the airtight and structural strength of the masonry.
Q:Semisilica brick, clay brick, high alumina brick and what is the difference?
This is a kind of refractory material is divided into three types: semisilica brick (A12O315 ~ 30%), clay brick (A12O330 ~ 48%), high aluminum brick (A12O3>48%).
Q:Such purpose and scope please give me detailed points thank you
Mainly used for coke oven carbonization chamber and the combustion chamber wall, open hearth furnace regenerator and a sediment chamber, soaking furnace, glass furnace, refractory materials and ceramic brick kiln, kiln vault and other load-bearing parts. Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.
Q:What is the effect of the content of silicon nitride in silicon nitride bonded silicon carbide brick on the use of electrobath? Thank you
The main damage of silicon carbide side wall brick is stress damage, not chemical erosion. Chemical damage is formed prior to the formation of the groove, and the damage to the chemical erosion is little after the formation of the groove.
Q:Which material is good for furnace refractory?
Basic refractories in Magnesium Oxide and calcium oxide as the main ingredient, commonly used is brick. Magnesium Oxide 80% to more than 85% containing magnesia brick, has good resistance to alkaline slag and slag, refractory clay brick and brick high ratio. Mainly used in open hearth furnace, oxygen converter, electric furnace, non-ferrous metal smelting equipment and high temperature equipment.
Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick
Heating calcination is the best way to extend this sort of impurity removal. Remove impurities

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