48/0 High Temp Silica Grog
Item Class Raw Materials
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You must test before you use it, at any scale. Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.
48/0 High Temp Silica Grog : 10 pounds
Silica Grog is produced exclusively from virgin silica brick rejects. Advantages of this grog are price,
tightly controlled screen size, high purity and very consistent supply.
This grog is extremely refractory and will withstand temperatures above 3200 degrees F.
The mineralogy is low in quartz.
Typical specifications
PCE 32 to 34
Color Gray
Moisture 0.5 % max, 0.1 % typical
Bulk Density 1.05 g/cc
Chemical Analysis:
Range Typical
Si02 92.00 - 97.00 95.00
A102 0.50 - 1.50 0.80
Fe203 0.50 - 1.50 0.70
CaO 2.30 - 3.50 2.80
MgO 0.09 - 0.50 0.10
Ti02 0.01 - 0.50 0.20
Alkalies 0.03 - 0.10 0.07
LOI 0.30 - 0.50 0.40
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