Astron Zircon Zircon Flour
- CAS Number
- 14940-68-2
- EC Number
- 239-019-6
- Chemical Name
- Zircon
- Chemical Family
- Silicates
Astron Zircon Zircon Flour is a coarse or fine white mineral powder that is naturally occuring, chemically inert and stable to very high temperatures. Insoluble in water, dilute acids and hot concentrate 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 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 zirconia, a synthetic substance with a completely different chemical composition.
Properties
- Physical Form
- Powder
- Solid
Product families
Applications
- Ceramics & Refractory
- Other Industrial Applications
- Industrial Coatings
Product Families
- Inorganics
Other characteristics
- Markets
- Industrial
- Paints & Coatings
- PACKAGING
- 50 Kg.bags
- Technology
- Base Chemicals & Intermediates
- Packaging Type
- Bags
- ChemicalFormula
- ZrSiO4
- Applicable Processes
- Glasses Manufacturing
- Typical Applications
High temperature applications. 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.
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit |
|---|---|---|
| ZrO2 Content | 66 | % |
| SiO2 Content | 32 | % |
Table 2 of 2
11 rows| Characteristic | Value | Unit |
|---|---|---|
| Angle of Repose (degrees) | 30 | — |
| Bulk Density | 115 - 130 | lbs./ft.3 |
| Dissociation Temperature | 3200 | °F |
| Loss on Ignition | 0.15 - 0.25 | — |
| Melting Point | 2200 - 2550 | °C |
| Mohs Hardness at 20°C | 7.5 - 8.0 | — |
| Molecular Weight | 183.1 | g/mol |
| Solid Specific Heat | 0.132 | — |
| Specific Gravity | 4.5 - 4.80 | — |
| Thermal Conductivity | 14.5 | BTU/sq.ft./hr/°F/in |
| Thermal Expansion Coeficent | 4.2 | cm/cm/°C |
