Zircon Mineral Company


Sillimanite


Sillimanite

Sillimanite Flour

Typical Mineralogy

MineralTypical
Sillimanite93-94%
Rutile/Ilmanite1-2%
Zircon1-1.5%
Quartz1-3%

Typical Sieve Analysis

Mesh (Tyler screen)Cumulative wt. % retained
400.5
2015
575

Sillimanite Grannular

Chemical Analysis

AIl2 Ol359.00% (min)
SiOl232.80% (max)
Ti Ol200.50% (max)
Fel2 Ol300.40% (max)
Pl2 Ol500.03% (max)

Physical Properties

Specific Gravity3.2
Bulk Density1950-2050 Kg/Ml3
Hardness (MOHS)7
Refractoriness1800-1900 C
Expansion At 1550 C7.00%

Sieve Analysis (Typical)

Mesh (Tyler screen)Sieve opening in micronsCumulative wt. % retained
354250.0-0.1
483000.5-2.5
652123.0-10.0
10015030.0-50.0
15010685.0-95.0
2007599.0-100.0


Typical Chemical Analysis

Content % Standard Typical
Al2O3 min 57 58
TiO2 max 2.0 1.2
Fe2O3 max 0.8 0.7
CaO max 0.2 0.1
MgO max 0.4 0.2
Na2O + K2O max 01 0.1
Th + U max 25 ppm 25 ppm
Moisture max 0.5 0.1

Typical Physical Properties

Appearance Dry Powder of Light Grey Color
Melting Point 1850oC
Mullate Transformation 1350-1540oC
Specific Gravity 3200-3500 Kg/m3
Bulk Density 960 Kg/ m3
Grain Size 63-200 mkm
Solubility in Water Insoluble
Angle of Friction 32oC
Hardness 6
pH 6.5-7.0