Ewing Kaolin

Oxide	Analysis	Formula
CaO	0.09%	-
K2O	0.16%	-
MgO	0.06%	-
Na2O	0.08%	-
TiO2	1.63%	0.05
Al2O3	38.60%	1.00
SiO2	45.20%	1.99
Fe2O3	0.50%	0.01
LOI	13.70%	n/a
Oxide Weight		228.10
Formula Weight		264.31

Notes

An intermeadiate grained airfloated kaolin selected, processed, and controlled to meet the specfic needs of the fiberglass industry.

Physical Properties
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Dry M.O.R., psi:* 400
pH: 4.8
C.E.C., meq/100g: 6.5 +/- 1.0
Specific Surface Area, sq metre/g: 16.5
Specific Gravity: 2.6
P.C.E.: 33-34

Particle Size, Microns: 20 10 5 2 1 0.5 325# residue
(% finer than) 99% 97% 93% 81% 72% 56% .5

Fired Properties
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Color, Cone 8 (L) 83.0
(a) -0.8
(b) 8.6

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*Extruded, 50% ball clay, 50% flint
**50% Clay, 50% Nepheline Syenite

Related Information

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Materials	Kaolin The purest of all clays in nature. Kaolins are used in porcelains and stonewares to impart whiteness, in glazes to supply Al2O3 and to suspend slurries.
Typecodes	Kaolin Pure clay mineral, there are many brand names of varying purity and iron content.

By Tony Hansen
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