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Mullite Powder

Mullite, a synthesized aluminum silicate material, offers unparalleled durability and thermal stability for high-performance applications. Crafted through an advanced sintering process, our mullite combines optimal purity with exceptional mechanical strength, making it the material of choice across various industries.

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product introduction


What is Mullite Powder?



Mullite powder is a white crystalline powder. It is easy to absorb moisture but not deliquescent. Melting point 2050℃; boiling point 2980℃; relative density 3.965. It has high hardness, Mohs hardness 8.8. It is an electrical insulator, with a volume resistivity of (1.2×1013Q.cm) at 300℃.


It is almost insoluble in water and non-polar organic solvents such as ethanol and ether. It has low solubility in weak acids or weak bases. It is soluble in concentrated sulfuric acid and slowly dissolves in alkali solution to form hydroxide.



Teachnical Data:



Item/ Grade NO.

ZYM-45

ZYM-44

ZYM-43

ZYM-42

Chemical Analysis

(%)

AL2O3 min

45

44

43

42

Fe2O3

1.0～1.2

1.2～1.5

1.5～2.0

2.0～3.0

SiO2

50～52

50～52

51～53

51～53

Ti02 max

0.6

0.6

0.7

0.7

K2O+Na2O max

0.3

0.3

0.4

0.4

Ca0+Mg0 max

0.5

0.5

0.6

0.6

Bulk density( g/cm³) min

2.60

2.55

2.50

2.45

Refractoriness (°C ) min

1770

1750

1730

1700

Hardness～Moh's scale

7～8

7～8

7～8

7～8

PH value

6～8

6～8

6～8

6～8

Loss of ignition(%) max

0.20

0.25

0.25

0.30

Dust content of sand(%) max

0.1

0.1

0.1

0.1



Physical properties



Physical propertiesNumeric
density2.65 g/cm³
Specific surface area10-20 m²/g
granularity100-200 μm
Melting point1850 ℃
hardness6.5-7（Mohs hardness）
Thermal conductivity0.2-0.3 W/(m·K)
Water absorption<1%

Characteristics:


1. High refractoriness.

2. Low iron content and impurities.

3. Low dust content.

4. Coefficient of thermal expansion is small.

5. High volume density.

6. Sufficient calcination of raw materials.

7. Product size is standard.



Precautions for using mullite powder


  1. Alumina powder may irritate the respiratory tract and eyes. Protective equipment should be worn when using it to avoid inhalation of dust and contact with eyes.

  2. Alumina may undergo thermal decomposition under high temperature conditions and release harmful gases. Pay attention to ventilation conditions.

  3. When storing and using alumina, avoid contact with organic matter, combustible substances and strong acids to prevent fire or explosion.



Application of Mullite Powder in Precision Manufacturing


  • Preparation of ceramics and glass: Alumina is an important raw material for ceramic and glass products, such as ceramic products, tiles, abrasives, glass fibers, etc.
  • Abrasives and polishing agents: The high hardness of alumina makes it an excellent abrasive and polishing agent for metal processing, glass processing, and stone processing, etc.
  • Catalyst: Alumina can be used as a catalyst carrier and plays an important catalytic role in chemical reactions.




product introduction

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Why choose us

Wuxi Dingyuxinda Special Steel Co., Ltd. is a professional supplier of refractory raw materials and products, integrating research and development, production, and sales. Over the years, we have deeply explored the fields of mullite series, kaolin, and customized refractory materials. Our products are widely used in ceramics, glass, steel, power, and petrochemical industries. We boast modern production lines and a comprehensive quality management system, adhering to controlling the purity of raw materials from the source. Through continuous technological innovation, we not only provide standardized products but also strive to offer high-temperature lining solutions for complex working conditions to our global customers, helping you enhance production efficiency and reduce operation and maintenance costs.

Quality Controllable

We specialize in refining mullite and kaolin sand powder, strictly controlling quality from the source.

Stable Performance

High-purity raw materials + precision processing, resulting in uniform particle size, high temperature resistance, high strength, and good sintering properties.

Complete Categories

We offer a complete range of specifications for mullite sand powder and kaolin sand powder, catering to one-stop procurement needs across multiple industries.

On-Time Delivery

With stable production on a large scale, ample inventory, and timely delivery, long-term cooperation is even more reassuring.

Customization Support

Customization of particle size, purity, and other indicators can be provided according to customer needs, adapting to different process requirements.

Professional Service

We provide comprehensive services including technology selection and after-sales follow-up, ensuring hassle-free and efficient cooperation.

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