WRA Calcined Alumina
ALUMINA
Chemistry
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Volatiles
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Miscellaneous
- Family: Alumina
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
This is an intermediate soda, medium crystalline 3rd generation calcined
alumina.
WRA A-17 A-16
Ultimate crystal size d50-Eppendorf, microns: 2.5-3.2 3.0-3.5 .3-.5
Al2O3 99.5+ 99.5+
SiO2 .02 for A17, .01 for A16
Fe2O3 .01 for all
Na2O3 .08 for A17 and A16
Specific surface area: BET, m2/g .5-.8 3 3-7
Aggregate size, % for WRA: >150 micron 1-10, >63 " 60-80, >40 70-95
Grinding time, Hrs: 4 for A17, 16 for A16
Green density, g/cc: 2.15 for A16, 2.5 for A17
Fired density, g/cc: 3.88 for A16, 3.75 for A17
From Aluminum Company of America
1501 Alcoa Building
Chemicals Division
Pittsburg, PA 15219
Suppliers
- Alcoa
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="WRA Calcined Alumina" descrip="ALUMINA" generic="0" rawmineral="0" searchkey="" loi="0.10">
<families>
<family name="Alumina"/>
</families>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.020" tolerance=""/>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.100" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="99.700" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="0.020" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.020" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="0.100" tolerance=""/>
</volatiles>
<suppliers>
<supplier name="Alcoa" country="US" url="www.alcoa.com/alumina" label=""/>
</suppliers>
<notes>
<note>This is an intermediate soda, medium crystalline 3rd generation calcined
alumina.
WRA A-17 A-16
Ultimate crystal size d50-Eppendorf, microns: 2.5-3.2 3.0-3.5 .3-.5
Al2O3 99.5+ 99.5+
SiO2 .02 for A17, .01 for A16
Fe2O3 .01 for all
Na2O3 .08 for A17 and A16
Specific surface area: BET, m2/g .5-.8 3 3-7
Aggregate size, % for WRA: >150 micron 1-10, >63 " 60-80, >40 70-95
Grinding time, Hrs: 4 for A17, 16 for A16
Green density, g/cc: 2.15 for A16, 2.5 for A17
Fired density, g/cc: 3.88 for A16, 3.75 for A17
From Aluminum Company of America
1501 Alcoa Building
Chemicals Division
Pittsburg, PA 15219</note>
</notes>
</material>
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