Silicon Carbide Silica Brick

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Specifications

SI3N4 SIC
Stable chemical performance
High cold crushing strength
Good thermal shock stability
Good anti corrosion ability

SI3N4 bonded SIC brick.

Stable chemical performance
High cold crushing strength
Good thermal shock stability
Good anti corrosion ability

It is mainly used in the production of aluminum,copper, zinc.

It is used as the liner of molten bath or electrobath.

SI3N4 SIC brick has no corrosion with metal aluminum, and has no chemical reaction with cryolite. It is the ideal material for electrobath lining brick.

Item Brand Index	For General Purpose			Light weight silica brick
Item Brand Index	GZ-95	GZ-94	GZ-93	QG-1.2
SiO2≥	95	94	93	91
Refractoriness	1710	1710	1690	1670
RUL(0.2 MPa)T1, °C	1650	1640	1620	1560
Apparent Porosity%	≤22	≤23	≤25	≥45
Cold Crushing Strength Mpa	≥29.4	≥24.5	≥19.6	≥3.5
True Density g/cm3	≤2.37	≤2.38	≤2.39	≤2.39
Bulk Density g/cm3	≤1.20	≤1.20	≤1.20	≤1.20

Item	Data
Apparent porosity,%	≤17
Bulk density,g/cm3	≥2.6
Cold crushing strength,Mpa	≥150
Crushing strength at 1400°c,Mpa	≥43
SiC, %	≥72
Si3N4, %	≥21
Fe2O3, %	≤1.5
Anti-alkaline	Good

Silicon Carbide

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: The specific content is what gb/t2608-2012 brick: The provisions of the brick classification, technical requirements, test methods,

Q: What is acid refractory?: Acid refractory material usually refers to refractories with SiO2 content greater than 93%. Its main characteristic is that it can resist acid slag corrosion at high temperature, but it is easy to react with alkaline slag.

Q: How much is the highest melting point of silicon?: Acidic silica brick refractories, softening temperature is as high as 1640 to 1670 DEG C, in the long-term use volume is relatively stable under high temperature. More than 94% silica content.

Q: Which material is good for furnace refractory?: Kiln types of refractories is very extensive, selection of refractory materials according to the type of furnace furnace temperature and use of selected refractory material, refractory material is divided into custom products of refractory bricks and unshaped refractory castable series products. According to chemistry, it is divided into acidic, neutral and alkaline materials.

Q: The brick is mainly used in the place?: Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.

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: Can not use it two brick: Acidic silica brick refractory material, has good ability in acid slag erosion

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.

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.

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