Ceramic Materials

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NC-4 Feldspar

Alternate Names: NC4 Feldspar, Spruce Pine #4 Spar

OxideAnalysisFormula
CaO1.40%0.139
MgO0.05%0.007
K2O4.10%0.243
Na2O6.80%0.611
Al2O318.85%1.030
SiO268.15%6.321
Fe2O30.07%0.002
LOI0.09
Oxide Weight554.19
Formula Weight554.69
This is the chemistry of the material (the formula compares numbers of molecules, the analysis compares them by weight). In glazes, the composite chemistry of the mix is the main factor shaping fired properties (e.g. color, melting temperature, surface). In bodies we are interested in their physical properties (e.g. shrinkage, porosity, strength), these are a product of the mineralogy of the materials.
DENS - Density (Specific Gravity) 2.65
SADR - Sieve Analysis Dry 170: +200 mesh: 1.92%, +325: 11.97 200: 0.7%, 6.6% 250: 0.06%, 1.5%
SAMG - Surface Area (m2/gm) 170: 1.21, 200: 1.29, 250: 1.48
BDLB - Bulk Density lbs/cu. ft. (Packed) 62 loose, 74 packed
AVSC - Apparent Viscosity (cps) 170: 14.1, 200: 12.6, 250: 10.6

NC-4 feldspar is a high quality sodium / potassium / calcium aluminum silicate ground to 170, 200 and 250 mesh, for ceramic applications. Carefully beneficiated and controlled for quality, NC-4 feldspar offers high alkali content and low iron oxide content per unit of alumina. Its various grinds are tailored for specific applications.

Now called Minspar 200.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="NC-4 Feldspar" descrip="" searchkey="NC4 Feldspar, Spruce Pine #4 Spar" loi="0.00" casnumber="12168-80-8"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.400" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.050" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="4.100" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="6.800" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="18.850" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="68.150" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.070" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="0.090" tolerance=""/> </volatiles> </material>


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