Description:
A course or fine white mineral powder that is naturally occurring, chemically inert and stable to very high temperatures. Insoluble in water, dilute acids and hot concentrated sulfuric acid.
Zircon is a mineral belonging to the group of nesosilicates. Its chemical name is zirconium silicate and its corresponding chemical formula is ZrSiO4. Hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is the tetragonal crystal class. The natural color of zircon varies between colorless, yellow-golden, red, brown, and green. Colorless specimens that show gem quality are a popular substitute for diamond; these specimens are also known as “Matura diamond”. It is not to be confused with cubic zirconium, a synthetic substance with a completely different chemical composition.
Chemical Name: Zirconium silicate
Chemical Formula: ZrSiO4
Synonyms:
Zircon flour / zircon sand, zirconium silicate, zirconium orthosilicate, ZrSiO4, hyacinth, (silicic acid, zirconium (4+) salt), zircon, zirconium silicon oxide, CAS # 10101-52-7
Chemical Properties:
ZrO2= 66.0%, SiO2= 32.0%
Physical Properties:
- -40 + 200 mesh
- 200 mesh and finer
- 325 mesh and finer
- 400 mesh and finer
- 600 mesh and finer
- Between 0.7 and 2.4 mm bead granulations
Typical Applications:
ZrSiO4 is High-temperature applications. The primary source for investment casting shell molds, foundry cores, metal chills, ladle brick, welding rod coatings, abrasive cleaning, ceramics, glass, chemical, refractory bricks, abrasive & mold washes, solid oxide fuel cells, and nuclear power plants.
Specifications:
Molecular Weight (g/mol.) | 183.1 |
Bulk Density (lbs./ft.3) | 115-130 & 170-180 |
Specific Gravity | 4.5 to 4.8 |
Solid Specific Heat | 0.132 |
Melting Point (°C) | 2200 to 2550 |
Dissociation Temp. (°F) | 3200 |
Thermal Exp. Coef. (cm/cm/°C) | 4.2 |
Mohs Hardness @20°C | 7.5-8.0 |
An angle of Repose (degrees) | 30 |
L.O.I. | 0.15 to 0.25 |
Color | off-white |
Thermal Conductivity (BTU/sq.ft./hr/°F/in.) | 14.5 |