Products

SYNTHETIC MULLITE

Features

  • As various raw materials are fine-crushed and wet-blended, SYNTHETIC MULLITE has uniform structure.
  • As the raw materials containing only a few impurities are sintered at high temperature near its melting point (1850°C) in a rotary kiln, SYNTHETIC MULLITE has a dense, needle-like structure.
  • This product has the following advantageous chemical and physical properties:
    • High melting point
    • High weighted softening point
    • Low coefficient of thermal expansion
    • High rigidity
    • High resistance to corrosion against gas and slug

Product lineup

We manufacture 3 types of SYNTHETIC MULLITE, NN, MMS and SM, to allow distinct usage according to the use.

MM

SYNTHETIC MULLITE MM

SYNTHETIC MULLITE MM

This type is the base of SYNTHETIC MULLITE. It is made of almost 100% mullite crystals with a minimal addition of corundum crystals and hyalin. This makes its structure dense.

MMS

SYNTHETIC MULLITE MMS

SYNTHETIC MULLITE MMS

In terms of chemical property, this type is higher in purity and denser in structure compared with the MM type.

SM

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SYNTHETIC MULLITE SM

In order to improve the resistance to corrosion, it is made composed of 5-10% corundum crystals and the balance percentage of mullite crystals with a minimal quantity of hyalin.

Product information

Standard quality

 MMMMSSM
Chemical composition (%)Al2O370.8071.2675.52
SiO227.2727.4422.79
Fe2O30.700.410.62
TiO20.260.320.21
CaO0.180.120.15
MgO0.250.090.15
K2O0.130.060.10
Na2O0.310.230.29
Ig.lossTr.Tr.Tr.
Total99.9099.9399.83
Physical propertyApparent specific gravity2.812.872.92
Bulk specific gravity2.742.822.82
Water absorption (%)1.00.71.2
Apparent porosity (%)2.71.83.5
True specific gravity3.113.123.15
True porosity (%)11.99.310.2
Ore composition (%)Mullite98.7399.6890.05
Corundum2.932.3112.31
Hyalin---
Coefficient of thermal expansion
(×10-6)
20-800°C5.65.55.8
20-1500°C6.56.46.7

Guaranteed quality

 MMMMSSM
Chemical composition (%)Al2O3Min. 70.0Min. 70.0Min. 75.0
Fe2O3Max. 1.0Max. 0.6Max. 0.8
CaO + MgO-Max. 0.4-
K2O + Na2OMax. 0.6Max. 0.4Max. 0.6
Physical property
(6-10 mesh crushed product)
Apparent specific gravityMin. 2.70Min. 2.70Min. 2.80
Apparent porosity (%)Max. 5.0Max. 5.0Max. 5.0
RefractorinessMin. SK38Min. SK38Min. SK38

If you have any inquiry, please contact the following:

[Ceramics Sales Dept.]
12-8, Shiokusa-cho, Seto-shi, Aichi 489-0895, Japan
Tel: +81-561-21-5670  Fax: +81-561-21-4124

→For the inquiry form, click here.

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