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1.2g Density Silica Insulating Brick

China Zhengzhou Annec Industrial Co., Ltd. certification
China Zhengzhou Annec Industrial Co., Ltd. certification
Customer Reviews
good job and nice quality! Hope our next business

—— Carsten Schmickler

very nice company.waiting for my next visit

—— Neetu Arora

good quality, but price is higher than other supplier.

—— Bipin Vagal

thank you for your products and service. During the project, the staff from your company cooperated with our side perfectly. The goods are all follow our order. The after-sale service also good.


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1.2g Density Silica Insulating Brick

1.2g Density Silica Insulating Brick
1.2g Density Silica Insulating Brick 1.2g Density Silica Insulating Brick 1.2g Density Silica Insulating Brick

Large Image :  1.2g Density Silica Insulating Brick

Product Details:
Place of Origin: China
Brand Name: Annec
Model Number: GGR-1.2
Payment & Shipping Terms:
Minimum Order Quantity: 5 Tons
Price: 400-2100 USD/T
Packaging Details: 12-24 pallets for one 20 GP container
Delivery Time: 50-120 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 1500 Tons/ per month

1.2g Density Silica Insulating Brick

Bulk Density: ≤1.2 G/cm3 Cold Crushing Strength: ≥5 MPa
Thermal Conductivity(350±25)℃: ≤0.70 W/m·K Characteristic 1: Light Weight
SiO2: ≥91 % Refractoriness Under Load 0.1MPa: ≥1520
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    Insulating Silica Fireproof Brick is also known as silica insulation brick. Lightweight refractories with silica above 91% and bulk density below 1.2g/cm3. The refractoriness and load softening temperature are not much different from ordinary silicon bricks with the same composition.


    However, due to the large number of pores, the compressive strength, slag resistance, and corrosion resistance are not as good as those of ordinary silicon bricks, but the thermal shock resistance has been improved.

    Using finely divided silica as raw material, the critical particle size is usually not more than 1mm, and the particles less than 0.5mm are not less than 90%. Add flammable substances to the ingredients or use the gas generation method to form a porous structure, which is obtained by firing. Can also be made into non-burning products.


   Insulating Silica Fireproof Brick ​​ is mainly used in various parts of the kiln that require heat insulation or reduce its own weight without direct contact with the melt, without the action of aggressive gases, or with sudden temperature changes. When used at high temperature, it must not be in contact with alkaline refractories. According to different materials, the maximum service temperature is 1200~1550℃.




1.  Silicon oxide is above 90%.

2.  Good acid erosion resistance.

3.  High softening point with temperature.

4.  No shrink in burn repeatedly.

5.  Temperature of refractoriness under load is above 1650º C.




   Insulating Silica Fireproof Brick​​ are used in the Metallurgy, building materials, chemical industry, petroleum, machinery manufacturing, silicate, power and other industries.

It’s widely used for the linings and insulating layers of industry kilns, and the areas without strong erosion and souring action by molten materials at high temperature.


Product Description:





Insulating Silica Fireproof Brick



SiO2 %


Bulk Density ( g/cm3)


Cold Crushing Strength (MPa)


Linear Change on Reheating(%)

1550℃, 2h


Refractoriness Under Load
0.1MPa, ℃


Thermal conductivity(350±25)℃ (W/mK)


Packaging and shipping

Standard packing: waterproof inner packing + outer packing suitable for container transportation

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Contact Details
Zhengzhou Annec Industrial Co., Ltd.

Contact Person: Mrs. LI

Tel: 0086-18538075889

Fax: 86-0371-69938888

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