Super Duty Silica Brick for Glass Melting Tank 97

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

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General Information

The CMAX super-duty silica bricks for glass melting tank is characterized by high purity, less impurity, good corrosion resistance, higher bulk density, complete phase transformation, lower residual quartz, high RUL, lower thermal expansion and stable volume at high temperature. This leads to increase in service life of glass furnace and reduction in energy consumption. These products have found wide application in crown and key areas and been highly appreciated by clients.

 

Feature

CMAX Silica bricks produced by CNBM are characterized by smaller density, good thermal shock resistance, lower thermal conductivity, high RUL and good insulating performance.

 

Application

Glass melting tank

Glass furnace

 

Physical Properties and Chemical Compositions

 

Item

 Values

SiO2                                    %

≥97

Bulk density                 g/cm3

1.0

Cold crushing strength             MPa

2.0

Permanent linear change % 1450,2h

0.5

Refractoriness under load 0.2MPa   °C

≥1500

Thermal conductivity W/(m.k) (350±10°C on the average)

0.55

 

Super Duty Silica Brick for Glass Melting Tank  97

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Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick
Can generate the material needs is the best way to see the impurity problem!! the first consideration is whether can get the material impurities with what method choice after the time! Miscellaneous reactions cannot have new impurity formation! Selected cannot and need material reaction reagent!
Q:What is the silica refractory products?
Refractory brick with silica content greater than 90%.
Q:What are the materials for refractory materials? What are their names?
The main raw material is the main body of refractory. Auxiliary raw materials can be divided into binders and additives. The role of bonding agent is to make the refractory body in the production and use process has enough strength. There are commonly used lignin, phenolic resin, asphalt, cement, water glass, phosphoric acid and phosphate, sulfate, some main raw material itself has the effect of binder, such as clay; additive is to improve the production of refractory materials and construction technology, or strengthen the refractory material of some properties, such as stabilizer, water reducing agent, inhibitor, plasticizer, foaming agent, dispersing agent, bulking agent, antioxidant.
Q:The brick is mainly used in the place?
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.
Q:The chemical composition of silica brick and its physicochemical index?
    Al2O3 SiO2      fe2o3      cao       r2o93~98 0.5~2.5 ;; 0.3~2.5  0.2~2.7;  1~1.5;
Q:Why will expand when heated brick
After high temperature after the formation of tridymite and cristobalite and quartz and a small amount of residual glass phase, quartz heating to 220-240 DEG C, in a certain degree of thermal expansion, brick maximum expansion occurs in 100~300 DEG C, 300 expansion before the total amount of expansion is about 70%~75%.
Q:The introduction of silica brick?
An acid refractory consisting mainly of quartz and square quartz and a small amount of residual quartz and glass.More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance. 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 quartz in the body. 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:What is the main material of silica brick
More than 94% silica content. True density 2.35g/cm3. With acid resistance, slag erosion performance.
Q:The difference between clay refractory bricks and refractory brick in the application??
Brick bearing soft temperature and close to the melting point, high temperature strength, can be in high temperature (above 1400 degrees) under the condition of long-term use,
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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