Diamond Kaolin

Description: Secondary Intermediate Psd

Oxide	Analysis	Formula
CaO	0.15%	0.01
K2O	0.18%	0.01
MgO	0.10%	0.01
Na2O	0.08%	-
TiO2	1.40%	0.05
Al2O3	37.90%	1.00
SiO2	45.60%	2.04
Fe2O3	0.70%	0.01
LOI	13.50%	n/a
Oxide Weight		231.75
Formula Weight		267.92

Notes

This is a secondary kaolin with an intermediate particle size distribution. It is primarily used in plastic forming processes where its particle size distribution and montmorillonitic mineralogy serves to impart green strength to the body. It contains low Fe₂O₃ and TiO2 content for applications where fired color is critical. It has also proven useful in glaze applications.

Physical Properties
===================
Dry M.O.R., psi: 300-400
pH: 4-6.5
C.E.C., meq/100g: 6.5 +/- 1.0
Specific Gravity: 2.6
P.C.E.: 33-34<

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

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

Shrinkage Cone 10, 100% clay 9.8
Absorption Cone 10, 100% clay 8.9

The manufacturer claims this material is a substitute for GK Pioneer Kaolin.

Related Information

Links

URLs	http://www.k-tclay.com/ceramic_kaolin.asp K&T Ceramic Grade Kaolins
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.

Data

% < 0.5 microns	38
% < 5 microns	83
Surface Area (m2/gm)	18

By Tony Hansen
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