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Nepheline Syenite Unimin

Oxide Analysis Formula
CaO 0.35% 0.03
K2O 4.80% 0.22
MgO 0.03% 0.00
Na2O 10.60% 0.75
Al2O3 23.50% 1.01
SiO2 60.20% 4.38
Fe2O3 0.08% 0.00
Oxide Weight 434.94
Formula Weight 434.94

Notes

All ceramic grades are produced under rigid UNIMIN QIP quality assurance programs to control product uniformity. Glaze, clay slip, and tile grades are available.

Sieve Analysis ASTM E-11 A-200 A-270 A-400 A-700
(mean % retained on 70 .00 .00
each screen) 100 .01 .01
140 .04 .02
200 .45 .07
270 1.40 .80 .00
325 3.10 1.10 .03
-325 95.00 98.00 99.97 100.00

Sub Sieve Analysis:
% finer than 16 micron 57.0 66.0 88.0
10 micron 37.0 46.0 64.0
5 micron 19.0 25.0 35.0

Property: Test Method Unit Values
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mineral Petrographic Microcline/Albite/Nepheline
Specific Gravity ASTM C128 2.61
Melting Point ASTM C-24 F/C 1868/1020
Bulk Density ASTM C-29 lbs/cu ft 38-55

Related Information

Melt flow comparison between Nepheline Syenite 270 and 400 mesh

This Nepheline Syenite GLFL test for melt flow did not demonstrate much of a difference in melting at cone 9 between 270 and 400 mesh materials.

Links

Materials Nepheline Syenite
Typecodes Feldspar
The most common source of fluxes for high and medium temperature glazes and bodies.
URLs https://digitalfire.com/4sight/datasheets/SDSNephelineSyenite.pdf
Nepheline Syenite SDS

By Tony Hansen


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