Home > Products > Refractory Raw Materials > Alumina Bubble
Capacity:1000 tons per month
Package:Export ton bag
Size:As your requirements
Product Introduction
Alumina hollow sphere is a new type of high-temperature insulation material. It is made by smelting and blowing industrial alumina in an electric furnace, and its crystal form is a-Al2O3 microcrystals. With alumina hollow sphere as the main body, it can be made into products of various shapes. The maximum use temperature is 1800°C. The product has high mechanical strength, which is several times that of general lightweight products.
Features
1.Lightweight. 2.Closed cell material. 3.High temperature resistance.
Application
It has been widely used in high temperature and ultra-high temperature furnaces such as petrochemical industry gasification furnaces, carbon black industrial reactors, metallurgical industry induction furnaces, and has achieved very satisfactory energy-saving effects.
Technical Data
|
Type |
Guaranteed Value |
Typical Value |
|
Al2O3 |
98.5%min |
99% |
|
SiO2 |
1%max |
0.6% |
|
Na2O |
0.4%max |
0.25% |
|
Colour |
White |
|
|
Packing Density |
0.4~1g/cm3 |
|
|
Main Phase |
α-Al2O3 |
|
|
Sizes |
8-5/5-3/3-1/1-0/1-0.5/0.5-0.2mm |
|
|
Test standard |
GB/T21114-2007 |
|
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