Dresden M Ball Clay

Alternate Names: Dresden Ball Caly

Description: Kentucky Ball Clay

Oxide	Analysis	Formula
CaO	0.30%	0.02
K2O	1.20%	0.05
MgO	0.40%	0.04
Na2O	0.10%	0.01
TiO2	1.20%	0.06
Al2O3	26.20%	1.00
SiO2	55.90%	3.62
Fe2O3	1.20%	0.03
LOI	12.50%	n/a
Oxide Weight		336.76
Formula Weight		384.86

Notes

A fine-grained ball clay used primarily in plastic formed bodies. The colloidal organic present in Dresden M helps contribute excellent strength and plasticity.

Physical Properties
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Water of Plasticity*: 37.0%
% Dry Shrinkage*: 6.5
Dry M.O.R., psi:* 825
pH: 4.4
C.E.C., meq/100g: 11.0
Specific Surface Area, sq metre/g: 24.4
Soluble Sulfur: Low

P.C.E.: 32

Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 99% 97% 93% 81% 72% 56% 35%

Fired Properties
================
Cone 5 10
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Total Shrinkage: 13.0% 14.5%
Absorption: 10.0% 1.0%

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*Extruded, 50% ball clay, 50% flint
+Low-trace to 150, Med-150-400, High-450+
**50% Clay, 50% Nepheline Syenite

Related Information

Links

Materials	Ball Clay A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries.
Typecodes	Ball Clay Ball clays are abundant and very plastic and are used in all types of plastic forming bodies. They are not as white-burning or refractory as kaolins but lower in iron and fluxes than bentonites.

Data

Pyrometric Cone Equivalent	32

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