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High Temperature Resistance Refractory Mullite Lightweight Bricks For Kiln
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High Temperature Resistance Refractory Mullite Lightweight Bricks For Kiln

Mullite insulation brick is a lightweight refractory brick, the main component of which is mullite (3Al₂O₃·2SiO₂), a mineral material with high refractoriness and low thermal conductivity.

Mullite insulation brick is usually used in the thermal insulation layer of industrial kilns and thermal equipment. Its main purpose is to provide a thermal insulation effect while reducing heat loss and improving the thermal efficiency of the equipment.

  • Raw Materials: ● Alumina; ● Kyanite; ● Kaolin; ● Polylight balls, etc.
  • Production Process: ● Raw material ratio and extrusion molding; ● High temperature firing; ● Cutting and grinding to reach standard size.

Product Feature



● High refractoriness, up to 1790℃ or above;

● Load softening starting temperature between 1600 and 1700℃;

● Extremely low thermal conductivity, usually between 0.21 and 0.40 W/m·K;

● Good thermal shock resistance;

● High hot compressive strength;

● Precise appearance dimensions, faster masonry speed.


Product Parameters


Item/Category

JT23

JT26

JT28

JT30

JT32

(℃) Using temp

1300

1430

1520

1550

1600

(g/cm3) Density

0.55-0.65

0.8

0.9

1

1.1

(%) Reheating linear shrinkage

0.4

0.5

0.8

0.8

1

(Mpa) Cold crushing strength

1.8

1.8

2.5

2.8

3.5

(Mpa) Room temperature flexural strength

1.2

1.2

1.6

1.6

2.2

(350℃ W/mk) Thermal Conductivity

0.25

0.26

0.32

0.37

0.42

(×10-6/℃) Thermal expansion coefficient

0.47

0.47

0.48

0.48

0.49

Al2O3

45

54

64

72

80

Fe2O3

0.9

0.9

0.8

0.7

0.5


Product Parameters


Metallurgical industry: Used for lining of blast furnaces, steelmaking furnaces, aluminum smelting furnaces, etc., to help improve thermal efficiency and extend equipment life.

Ceramic industry: As a thermal insulation layer in ceramic kilns to protect other materials from high temperatures.

Glass industry: Used in glass melting furnaces, annealing furnaces, etc., to help maintain the stability of the furnace temperature and reduce heat loss.

Cement industry: Used in high-temperature equipment such as cement rotary kilns, providing good fire resistance and thermal insulation effects.

Industrial furnaces: Applicable to the lining and thermal insulation layer of various industrial furnaces to ensure safety and efficiency under high temperature conditions.

Petrochemical: Provide thermal insulation and fire resistance protection in high-temperature reactors in oil refining and chemical processes.

Other fields: It can also be used in other processes that require high temperature environments such as heat treatment and welding.

These applications reflect the wide adaptability and importance of mullite insulation bricks in high temperature and harsh environments.


Mullite Lightweight Bricks

Iron & Steel

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Non-ferrous Metals

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Power Industry

Mullite Lightweight Bricks

Building Materials

Mullite Lightweight Bricks

Oil Industry

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Non-ferrous Metals


Product Detail


Mullite Lightweight Bricks

Our Factory


Mullite Lightweight Bricks
Mullite Lightweight Bricks
Mullite Lightweight Bricks
Mullite Lightweight Bricks

FAQ


  • 1. Can I get some samples ?

  • 2. Do you receive customized order ?

  • 3. What's the lead time ?

  • 4. What's your payment terms ?

  • 5. Are you a manufacturer or a trading company ?

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