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Diamond Kaolin

Oxide Analysis Formula
CaO 0.15% 0.01
K2O 0.18% 0.01
MgO 0.10% 0.01
Na2O 0.08% 0.00
TiO2 1.40% 0.05
Al2O3 37.90% 1.00
SiO2 45.60% 2.04
Fe2O3 0.70% 0.01
LOI13.50%
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
Typecodes Kaolin
Pure clay mineral, there are many brand names of varying purity and iron content.

Data

% < 0.5 microns38
% < 5 microns83
Surface Area (m2/gm)18

By Tony Hansen


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