This slurry is intended to enhance casting qualities with faster casting rate as well as faster dewatering and set-up.
Crude Color: Dark Brown
% Solids: 60-61
Dry M.O.R. (psi 50% clay/50% flint, cast bars): 520
Water of Plasticity (%): 33
Linear Dry Shrinkage (%): 5.6
Soluble Sulfates (ppm): 800-1200
Filtration (ml): 34
Specific Surface Area (sq meters per gram): 15.8
CEC/MBI (meq/100 ml): 7.0-7.5
pH @90F: 4.5-5.8
Specific Gravity: 1.59-1.61
Viscosity @ 90F (cps Brookfield, 100 rpm, spindle 3): 450-750
Casting Rate @ 90F, 15 min. (g): 45
Deflocculant Type: Sodium Silicate "N" Brand
Particle Size (% finer than):
5 microns: 77
1 micron: 44
0.5 microns: 33
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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