•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com

Sign-up at https://insight-live.com today.

Pyrax Pyrophyllite

PYRAX (TYPES A, B, WA)

OxideAnalysisFormula
CaO0.10%0.011
MgO0.10%0.016
K2O1.81%0.122
Na2O0.30%0.031
TiO20.10%0.008
Al2O316.08%1.000
SiO278.20%8.254
Fe2O30.20%0.008
LOI3.10
Oxide Weight614.60
Formula Weight634.26
If this formula is not unified correctly please contact us.

Pyrax is chemically similar to a clay, it is a hyrated aluminum silicate. But Pyrax has the appearance of a talc. Many properties of Pyrax are quite similar to talcs. Pyrax has a neutral pH and due to the presence of quartz, is highly abrasive.

Density Mg/m3 2.8
pH at 10% solids 6.9
Abrasiveness (Einlehner M/M2 loss, 174,000 revolutions) 450-500

Pyrax is available as types A, B and WA. They vary in particle size and thus bulk density and color.

-325# -10micron -5micron -2.5micron
Pyrax A 90 50 28 13
Pyrax B 95 50 27 11
Pyrax WG 87 44 28 15

Pyrax HS Used mainly in wall tile bodies, especially fast-fire. It lowers firing temperature; produces low moisture expansion bodies; increases thermal shock resistance; and greatly increases firing strength of vitreous bodies. It promotes the development of mullite when substituted for an equivalent amount of feldspar or quartz.

Pyrax RG Refractory grade used in insulating firebrick, metal pouring refractories, ramming mixes, gunning mixes, castable mixes and kiln car refractories.


Out Bound Links

In Bound Links


By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Pyrax Pyrophyllite" descrip="PYRAX (TYPES A, B, WA)" searchkey="" loi="0.00" casnumber="12269-78-2"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.100" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.100" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="1.810" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.300" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.100" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="16.080" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="78.200" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.200" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="3.100" tolerance=""/> </volatiles> </material>


Feedback, Suggestions

Your email address

Subject

Your Name

Message


Copyright 2003, 2008, 2015 https://digitalfire.com, All Rights Reserved