CerMull Sintered Mullite
A high quality sintered Mullite with extensive
use in the production of steel, glass and
ceramic refractories.
Produced from high temperature sintering of
Bayer process calcined alumina with selected
low alkali kaolin.
Major phases identified by X-Ray Diffraction as
mullite with traces of glass and corundum.
Mullite - the most stable phase of the aluminosilicate
system, is found rarely in nature
inevitably subject to contamination from other
rock formations and contaminants. Synthetic
mullite enables complete control of the
chemistry and physical properties promoting
complete control of the final ceramic system.
Individual crystallites are in the order of 40-50
microns in length and are formed, interlocked
on sintering to provide a tough matrix
exhibiting:
- high thermal shock resistance
- low thermal expansion
- low glass content
- controlled surface properties
This property of “toughness” makes it
extremely difficult to process as a raw material
without contamination to a form acceptable to
the industry. Cermatco is able to give complete
specifications for an iron-free material.
Standard sizes are:
| Standard sizes |
Physical Properties |
- 5 - 3 mm
- 3 - 1.5 mm
- 1.5 - 0.7 mm
- - 0.7 mm
- - 0.15
- - 0.08 mm
- -45μ
- -10μ
|
- Bulk Density 2.85 g.cm-3
- Apparent Porosity 3.0 %
- Thermal expansion
(reversible) 0.5%
- Refractoriness 1850 °C
|
Specials
Packaging Options
25 kg net paper sacks wrapped on a wooden
pallet of 1200 kgs.
1000-1500 kgs net big-bags wrapped on a
wooden pallet.. |
