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Withstand Lightweight Mullite Refractory Bricks Fireproof

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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Withstand Lightweight Mullite Refractory Bricks Fireproof

Withstand Lightweight Mullite Refractory Bricks Fireproof
Withstand Lightweight Mullite Refractory Bricks Fireproof

Large Image :  Withstand Lightweight Mullite Refractory Bricks Fireproof

Product Details:
Place of Origin: China
Brand Name: Annec
Certification: ISO
Model Number: DLG180-1.5L/DLG170-1.3L/LG160-0.8L/LG150-0.8L
Payment & Shipping Terms:
Minimum Order Quantity: 20 tons
Packaging Details: On wood pallet,covered with plastic film for Silicon Mullite Insulating Fire Brick
Delivery Time: 20-30days
Payment Terms: L/C, T/T
Supply Ability: 2000-2500 tons per month

Withstand Lightweight Mullite Refractory Bricks Fireproof

Al2O3: ≥60 Fe2O3: ≤1.0
Bulk Density ( G/cm3): ≤0.8 Cold Crushing Strength (MPa): ≥2.0
Thermal Conductivity (350±25)℃ (W/mK): ≤0.4 Color: Grey,creamy White
High Light:

Lightweight Mullite Refractory Bricks


Fireproof Mullite Refractory Bricks


Withstand Mullite Refractory Bricks



Product Introduction

High alumina refractories with mullite as the main crystal phase generally have an alumina content between 50% and 75%. The refractory temperature of mullite lightweight brick can reach above 1790℃. The starting temperature of load softening is 1600-1700℃. Pressure resistance at room temperature is slightly 70-260MPa. Good thermal shock resistance. There are two types of sintered mullite insulating bricks and fused mullite insulating bricks.
Sintered mullite insulating bricks are made of high-alumina bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as a binder, and forming and firing. Fused mullite insulating bricks use high alumina bauxite, industrial alumina and refractory clay as raw materials, add charcoal or coke fine particles as reducing agents, and are manufactured by reduction fusion method after molding. The crystalline fused mullite is larger than that of sintered mullite, and its thermal shock resistance is better than that of sintered products. Their high temperature performance mainly depends on the content of alumina and the uniformity of mullite phase and glass distribution.
A high-alumina refractory with mullite (3Al2O3·2SiO2) as the main crystal phase. Generally, the alumina content is between 65% and 75%. In addition to mullite, the mineral composition with lower alumina also contains a small amount of glass phase and cristobalite; the higher alumina content also contains a small amount of corundum. Lightweight mullite insulating bricks can be directly used for the lining of high-temperature kilns, and have been widely used in shuttle kilns, roller kilns, glass and petrochemical kilns.

Withstand Lightweight Mullite Refractory Bricks Fireproof 0Withstand Lightweight Mullite Refractory Bricks Fireproof 1


Physical and Chemical Index of Lightweight mullite insulating bricks


Item DLG180-1.5L DLG170-1.3L LG160-0.8L LG150-0.8L LG140-0.7L LG125-0.5L
Al2O3 % ≥90 ≥72 ≥60 ≥55 ≥50 ≥48
Fe2O3 % ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.0 ≤1.0
Bulk Density ( g/cm3) ≤1.5 ≤1.3 ≤1.0 ≤0.8 ≤0.7 ≤0.5
Cold Crushing Strength (MPa) ≥9.5 ≥5.0 ≥3.0 ≥2.5 ≥2.0 ≥1.5
Linear Change on Reheating ≤1% 1800 1700 1600 1500 - -
≤2% - - - - 1400 1250
Thermal conductivity (350±25)℃ (W/mK) ≤0.8 ≤0.6 ≤0.4 ≤0.35 ≤0.3 ≤0.2

The above data rae measured the average of the company, only for design reference, may be adjusted according to user needs in the process of production.


Specifications mullite insulation bricks:

1. Low thermal conductivity, good thermal insulation effect.

2. Low melting temperature, due to the low thermal conductivity, the mullite lightweight thermal insulation brick accumulated little heat, and it can save much energy obviously during the process of intermittent operation.

3.With low content of impurity such as alkali metal oxides, high refractoriness and content of aluminum, it can keep good performance in the reductive atmosphere.

4. High thermal compressive strength.

5. With high precise of the appearance size, it can increase the speed of the construction, reduce the usage of the fire clay and can keep the strength and stability of the construction. So at last it can length the life of the lining.

6. The mullite thermal insulation brick can be made in different shape so that reduce the quantity of usage and the joints of bricks during the construction. The brick can be directly used as the lining of the high temperature of the kiln and now widely used in shuttle kiln, roller kiln, glass and petrochemichal industry kilns.


Our services


>>24hrs hot-line available

>>Free advice on construction and design of the insulation furnace

>>Free samples and catalogue can be offered at customer's request

>>Any technical problems after purchasing will be kindly settled on our best in 2 working days


♦ Company Values

>>Paying our attention to QUALITY, EFFICIENCY and "HOLD-ON" attitude

>>Holding "EQUAL TO ECERYONE" as our principle

>>Treat customers as our FRIENDS.


Contact Details
Zhengzhou Annec Industrial Co., Ltd.

Contact Person: Mrs. LI

Tel: 0086-18538075889

Fax: 86-0371-69938888

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