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Jackson A fine-grained, high alumina ball clay, from Gleason, TN – known for its excellent fired color, strength and plasticity. Jackson is very popular in both casting and plastic formed bodies. Ceramic applications include dinnerware, sanitaryware, artware, electrical porcelain and refractories.
TYPICAL PROPERTIES
CHEMICAL ANALYSIS
SiO2 (%) 54.5
Al2O3 (%) 30.2
Fe2O3 (%) 0.8
TiO2
(%) 2.5
K2O (%) 0.9
Na2O (%) 0.2
CaO (%) 0.2
MgO (%) 0.3
L.O.I. (% at 950C) 10.7
Carbon (%) 0.5
PHYSICAL PROPERTIES
Water of Plasticity (%) 32.1
Dry Shrinkage (%) 5.0
Dry M.O.R.** (psi) 604
pH 4.2
M.B.I. (meq/100g) 7.6
Specific Surface Area (sq-m/g) 23.3
Soluble SO
4
*** (ppm) Low
FIRED PROPERTIES
Total Shrinkage (%)
Cone 5 12.7
Cone 10 15.6
Absorption (%)
Cone 5 11.6
Cone 10 5.0
P.C .E 33
PARTICLE SIZE
%< 20 (microns) 97
%< 10 (microns) 92
%< 5 (microns) 87
%< 2 (microns) 76
%< 1 (microns) 67
%< 0.5 (microns) 55
%<0.2 (microns) 39
