HPM-20 Volclay Bentonite
Microfine Sodium Bentonite
Chemistry
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Volatiles
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Links to Other Materials
- Big Horn CE 200 Bentonite - Related
- Bentonite - Related
- Cache
Miscellaneous
- Family: Clay Other
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
A selectively mined sodium bentonite consisting of micronized particles. It is used as a suspending agent, viscosifier, binder, plasticizer and emulsion stabilizer.
Although this material fires brown, even chocolate brown at higher temperatures, it is extremely plastic compared to white burning bentonites and therefore much less is required, possibly 5 times less. It is ground very fine and presents no fired specking problems in porcelains. If 2% is used it will add 0.1% to the iron content, not usually enough to notice in most whiteware bodies.
Data
- Surface Area (m2/gm): 750
- Sieve Analysis Wet
-200 mesh: 99.75%
-325 mesh: 99% - Specific Gravity:
- Trace Minerals
feldspar, quartz, calcite, gypsum - Sieve Analysis Dry
-200 mesh: 99% - pH: 8.5-10.5 @ 2% solids
- Apparent Viscosity (cps): 8-30
- Apparent Viscosity (cps): 8-30
- pH: 8.5-10.5 @ 2% solids
- Sieve Analysis Dry
-200 mesh: 99% - Trace Minerals
feldspar, quartz, calcite, gypsum - Specific Gravity:
- Sieve Analysis Wet
-200 mesh: 99.75%
-325 mesh: 99% - Surface Area (m2/gm): 750
Suppliers
- American Colloid Company
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="HPM-20 Volclay Bentonite" descrip="Microfine Sodium Bentonite" generic="0" rawmineral="0" searchkey="" loi="4.80">
<families>
<family name="Clay Other"/>
</families>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.300" tolerance=""/>
<oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="2.700" tolerance=""/>
<oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.300" tolerance=""/>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="2.430" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="20.690" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="69.560" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="4.850" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="12.000" tolerance="max"/>
</volatiles>
<references>
<reference name="seealso" reason=""/>
<reference name="seealso" reason=""/>
</references>
<suppliers>
<supplier name="American Colloid Company" country="US" url="http://www.colloid.com/" label=""/>
</suppliers>
<notes>
<note>A selectively mined sodium bentonite consisting of micronized particles. It is used as a suspending agent, viscosifier, binder, plasticizer and emulsion stabilizer.
Although this material fires brown, even chocolate brown at higher temperatures, it is extremely plastic compared to white burning bentonites and therefore much less is required, possibly 5 times less. It is ground very fine and presents no fired specking problems in porcelains. If 2% is used it will add 0.1% to the iron content, not usually enough to notice in most whiteware bodies.</note>
</notes>
<testdata>
<testitem testname="2" value="750"/>
<testitem testname="2" value="-200 mesh: 99.75%
-325 mesh: 99%"/>
<testitem testname="2" value=""/>
<testitem testname="2" value="feldspar, quartz, calcite, gypsum"/>
<testitem testname="2" value="-200 mesh: 99%"/>
<testitem testname="2" value="8.5-10.5 @ 2% solids"/>
<testitem testname="2" value="8-30"/>
<testitem testname="2" value="8-30"/>
<testitem testname="2" value="8.5-10.5 @ 2% solids"/>
<testitem testname="2" value="-200 mesh: 99%"/>
<testitem testname="2" value="feldspar, quartz, calcite, gypsum"/>
<testitem testname="2" value=""/>
<testitem testname="2" value="-200 mesh: 99.75%
-325 mesh: 99%"/>
<testitem testname="2" value="750"/>
</testdata>
</material>
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