Velvacast Kaolin
Large Particle Size Kaolin
Chemistry
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Volatiles
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Links to Other Materials
Miscellaneous
- Family: Kaolin
- Region: North America
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
A large particle size kaolin intended for casting slips. It is low in plasticity and fires darker than most kaolins. Combining some of this material with other kaolins in casting recipes will tend to reduce casting times because of the greater permeability of the slip.
Kaolins of this type are also valuable for use in tuning the shrinkage and plasticity of slips which are applied to wet, leather hard or dry ware. Because their shrinkage is very low, they can be substituted for part of the regular kaolin and there will be minimal impact on the fired properties.
Suppliers
- Dry Branch
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Velvacast Kaolin" descrip="Large Particle Size Kaolin" generic="0" rawmineral="0" searchkey="Velva Cast" loi="13.70">
<families>
<family name="Kaolin"/>
</families>
<regions>
<region name="North America"/>
</regions>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.260" tolerance=""/>
<oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.180" tolerance=""/>
<oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="1.100" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="38.910" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="45.490" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.370" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="13.700" tolerance=""/>
</volatiles>
<references>
<reference name="seealso" reason=""/>
</references>
<suppliers>
<supplier name="Dry Branch" country="US" url="www.imerys.com" label=""/>
</suppliers>
<notes>
<note>A large particle size kaolin intended for casting slips. It is low in plasticity and fires darker than most kaolins. Combining some of this material with other kaolins in casting recipes will tend to reduce casting times because of the greater permeability of the slip.
Kaolins of this type are also valuable for use in tuning the shrinkage and plasticity of slips which are applied to wet, leather hard or dry ware. Because their shrinkage is very low, they can be substituted for part of the regular kaolin and there will be minimal impact on the fired properties.</note>
</notes>
</material>
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