High Alumina Refractory Fused Mullite

• Feature: Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Low Thermal Conductivity
• Production Process: Electric Fusion
• Refractoriness (℃): 1770< Refractoriness< 2000
• Model NO.: Fused Mullite
• Shape: Powder
• Main Content: Al2O3, Sio2
• Density: 2.9 G /Cm3, Typically 2.93-2.95
• Linear Expansion Coefficien: -6.0×10-6
• Apparent Porosity: 5-8
• Size: 0-1mm,1-3mm,3-5mm,5-8mm
• Transport Package: Big Bag

Product Description

Fused Mullite is a light grey color fused mineral obtained from melting of high purity alumina and high quality quartz sand(silica) in proper ratio in large electric arc furnace. The raw materials of it and fusion process give it a unique needle shape mullite crystale, characterized by high melting point, chemical stability, low thermal conductivity and reversible thermal expansion, good thermal shock resistance, excellent mechanical strength and corrosion resistance. These physical and chemical characters make fused mullite an ideal mineral used in refractory industry and thermal resistant products. 

1. Linear Bricks in Glass and Steel Industries
2. Investment Casting Shell Building
3. Kilin Furnaces
4. Ladle Spark Plug Bodies
5. Refractory and Thermal Resistant Products

Physical Specifications & Package
Main Content                                  : Al2O3, SiO2
Density                              : >=2.9 g /cm3, Typically 2.93-2.95
Color                                        : Grey/White
Melting Point                                  : 1850ºC
Linear Expansion Coefficien(1/°C)              : -6.0×10-6
Apparent Porosity                           : 5-8
Sizes Available                        :0-1mm,1-3mm,3-5mm,5-8mm,100mesh,200mesh,325mesh
Package                             : Jumbo Bag, 25kg Bag and 40 Bags on a Pallet

Particle Distribution & Chemical Content
We produce ANSI,JIS,FEPA standard materials and other customized sizes.

Al2O3	70-77%
SiO2	22-30%
Fe2O3	0.1%max for Grits, 0.3%max for Fines
Na2O+K2O	0.4%max
CaO+MgO	0.4%max