Sandra K. Tesar on tue 28 apr 98
I came into some supplies, one of which is a five pound box of dry No. 6
Tile clay. Can someone tell me something about it? I am not familiar. TIA
Sandra K. Tesar
sashart @juno.com
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DEBBYGrant on wed 29 apr 98
Dear Sandra.
6 Tile can be used as a substitute for EPK in a glaze formula. It is
basically Kaolin from a different mine.
Good luck, Debby Grant in NH
Tony Hansen on thu 30 apr 98
MATERIAL: TILE #6 KAOLIN
DESCRIPTION: HIGHLY PLASTIC FINE GRAINED KAOLIN
SUPPLIER: DRY BRANCH KAOLIN
COST: 18.71 per 50BG
RAW WEIGHT: 272.66
ANALYSIS & UNITY FORMULA
========================
CaO....... 0.43% 0.02
MgO....... 0.58% 0.04
Na2O...... 0.04% 0.00
TiO2...... 1.42% 0.05
Al2O3..... 38.20% [ 1.00]
SiO2...... 46.90% 2.08
Fe2O3..... 0.35% 0.01
LOI....... 13.90%
======
101.82
6 Tile is an airfloated kaolin with bright firing properties yet
highly
plastic. It thus offers high green strength for superior jiggering
and wet
processing properties.
Particle size, % < 2 microns 54-65
Mean particle size (microns) 1.0-1.3
325 mesh screen residue, % max 1.0
pH, 20% solids 6.7-7.5
Strength (dry M.O.R.)
-psi 100% clay 900 min
Cone 10 absorption, % 5-8
Moisture, % max 3.0
Color (fired), cone 8 100% clay
-brightness, % MgO 80.3
-whiteness index 22.9
Color (fired), cone 8 50:50 clay/nepheline syenite
-brightness, % MgO 60.8
-whiteness index 25.9
C.E.C. (meq/100 g.) 8.5
Formulations:
The following are intended as a general outline only. Proportional
changes
in spar, flint and kaolin may be necessary, depending upon forming
and
firing properties desired. All are designed for firing at cone 5-10.
White Blue-White White Blue White
Casting Casting Casting Casting
Hydrite Flat-D 40 5
6-Tile 10 10 45 30
F-4 Feldspar 25 25 25 25
Flint 25 25 25 25
Kaopaque Kaolin 40 20
--
T o n y H a n s e n thansen@digitalfire.com
Don't fight the glaze dragon alone
INSIGHT, Magic of Fire at http://digitalfire.com
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