WAM® AL II

WAM® AL II is a truly unique product, designed to reduce the energy consumption associated with processing and handling of molten aluminum metal and to be non-reactive and non-wetted by the liquid metal. As a result this product has become the most demanded refractory material for molten aluminum applications by every company and individual desiring to reduce refractory wear, energy consumption and maintenance costs.

 

WAM® AL II technology can be deployed in every area of aluminum processing vessels whether in contact with molten metal or not, with some minor exceptions. It eliminates the need to zone between lower sidewalls, bellybands and upper sidewalls.

WAM® AL II  is suitable in the belly band area because it does not promote the formation of corundum like other refractory linings nor is it penetrated by the metal or corundum which does form due to atmospheric oxygen. Any buildup is easily removed without any damaging physical effort. It is less dense than aluminum so any pieces that become dislodged float out and thus do not result in refractory inclusions.

WAM® AL II has been successfully used in all areas of reverberatory-type melting furnaces, troughs, heated launders, holding furnaces, stacks, transfer ladles, over-the-road crucibles, and a variety of lids and doors.

 

WAM® AL II has a demonstrated record of performance with continued operation in some vessels approaching 8 years and counting. Customers have measured energy savings compared to their old refractory linings of up to 50% and they have cut their maintenance efforts and costs in half or more.

Typical Technical Data
WAM® AL II

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Classification:Special Cement Castable
Placement Method:Vibration Casting
Available Application Packages:This product is specifically designed for aluminum contact application
Typical Water Requirement (%wt):22
Material Required for Estimating (lb/ft3):115
Maximum Recommended Service Temperature (°F):2600

 

CHEMICAL ANALYSIS
Calculated wt.% Based on Common Oxides
THERMAL CONDUCTIVITY
(BTU-in/ft2-hr-°F)
Aluminum Oxide (Al2O3):64.8 %750°F5.3
Silicon Dioxide (SiO2):0.3 %1470°F4.8
Titanium Dioxide (TiO2):0.1 %2200°F5.3
Iron(III) Oxide (Fe2O3):0.1 %  
Calcium Oxide (CaO):24.3 %  
Magnesium Oxide (MgO):0.2 %  
Combined Alkali Oxide (Na2O + K2O):0.2 %  
Other:10.0 %  

PHYSICAL PROPERTIES

Temperature
(°F)
Density
(lb/ft3)
Modulus of
Rupture (psi)
Cold Crushing
Strength (psi)
Permanent
Linear Change (%)
After 23013015209530n/a
After 15001157404790-0.1
After 2500n/a6804610-0.3

Additional technical data may be available. Please contact your sales representative for more information.
Data on this table represent typical properties and cannot be used for specification purposes.