Bubble Alumina for Refractories

• Classification: High-Alumina
• Feature: Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity, Low Crack Rate
• Refractoriness (℃): 1770< Refractoriness< 2000
• Model NO.: Bubble Alumina
• Shape: Ball
• Main Content: Al2O3
• Bulk Density: 0.5-1 G /Cm3
• Transport Package: Big Bag
• Specification: 0.2-5mm, 0.2-1mm, 1-2mm, 2-3mm, 3-5mm etc
• Production Capacity: 10000t/Year

Product Description

 Bubble Alumina is a new type refractory material made from electro-fusion high grade industrial alumina. It is a white hollow sphere alumina raw material, featured by its Low Density, High Surface Porosity, Light Weight, High Refractory Temperature and High Chemical Stability. Its main chemistry is alpha aluminium oxide(α-Al2O3, more than 99%). 
It's obtained from electro-fusion of high grade alumina in electric furnace, and shaped by pressed air blow. Because of its special structure, it has very low weight, low density and high surface porosity. With more than 99% alumina, it has high refractory temperature and strength and low thermal conductivity. And thanks to our high performance production line, we produce Bubble Alumina with low breakage rate and high purity. It can be used to make various types of refractory and fireproof products, and used in industrial kiln in cement, glass, metallurgical and petrochemical industries. It has become a new type of refractory material more and more commonly used to reduce raw material and energy consumption.
Physical Specifications & Package
Main Content: α-Al2O3
Bulk Density: 0.5-1 g /cm3
Color: White
Refractory Temperature: 1800ºC
Sizes Available:0.2-5mm,0.2-1mm,1-2mm,2-3mm,3-5mm etc
Package: Jumbo Bag, 25kg Bag and 40 Bags on a Pallet
 
Chemical Content(Typical Value for Low Sodium Bubble Alumina)

Al2O3	99.59%
SiO2	0.10%
Fe2O3	0.012%
Na2O	0.14%
K2O	0.009%
CaO	0.075%
Moisture Content	0.07%