M&D Ball Clay
Description: Missouri Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.50% | 0.03 | |
| K2O | 0.50% | 0.02 | |
| MgO | 0.50% | 0.05 | |
| TiO2 | 1.31% | 0.06 | |
| Al2O3 | 27.33% | 1.00 | |
| SiO2 | 57.46% | 3.57 | |
| Fe2O3 | 2.31% | 0.05 | |
| LOI | 10.09% | n/a | |
| Oxide Weight | 335.56 | ||
| Formula Weight | 373.22 | ||
Notes
A very fine-grained montmorillontic bearing ball clay with exceptional strength and plasticity. M&D is considered the strongest ball clay on the market today. It is used primarily in plastic formed bodies, and by the refractories and electrical porcelain industries.
Physical Properties
===================
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
----
Total Shrinkage: 13.0% 14.5%
Absorption: 10.0% 1.0%
Shipped from Mayfield, KY
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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
| 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. |
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