| Customization: | Available |
|---|---|
| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, scientifically known as sodium hexafluoroaluminate or sodium aluminum fluoride, is a remarkable compound with the molecular formula Na3AlF6. It appears as fine white crystals and is odorless. Its solubility surpasses that of natural cryolite, making it particularly useful in various industrial applications. It features a specific gravity of 3, a hardness of 2 to 3, and a melting point of 1009 degrees Celsius. Additionally, it is hygroscopic and readily absorbs moisture from its surroundings. Cryolite serves multiple roles: it is primarily employed as a flux in aluminum electrolysis, providing a pivotal role in the efficient extraction of aluminum metal. Additionally, it acts as a durable filler in rubber, imparts toughness to grinding wheels, and serves as an enamel whitening agent. It protects glass from solar radiation, acts as a metal flux, and even finds use as an agricultural insecticide. Notably, the Hall-Heroult process employs a cryolite-based fluoride melt as a solvent for producing metallic aluminum. Cryolite's unique properties make it irreplaceable in this context, as no other compound matches its essential characteristics.
| Model | Chemical composition( mass fraction)/% |
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| F | AI | Na | SiO2 | Fe2O3 | so4²- | CaO | P2O5 | Hygrosco pic moisture |
Ignition loss( mass fraction) |
||
| ≥ | ≤ | ||||||||||
| FH-1 | 52 | 12 | 33 | 0.25 | 0.08 | 0.6 | 0.15 | 0.02 | 1.5 | 2.0 | |
| FH-2 | 52 | 12 | 33 | 0.36 | 0.08 | 1.0 | 0.20 | 0.03 | 1.3 | 2.5 | |
| FM-1 | 53 | 13 | 32 | 0.25 | 0.05 | 0.6 | 0.20 | 0.02 | 0.7 | 2.0 | |
| FM-2 | 53 | 13 | 32 | 0.36 | 0.08 | 1.0 | 0.60 | 0.03 | 0.7 | 2.5 | |
1. Primarily utilized as a flux in the process of aluminum electrolysis, offering unparalleled efficiency and reliability.
2. Serves as a wear-resistant additive in grinding products. This enhances the grinding wheel's durability, optimizes its cutting force and performance, and significantly extends both its service life and storage duration.
3. Acts as a crucial flux in the production of ferroalloy and boiling steel, ensuring superior quality in metal processing.
4. An indispensable flux for non-ferrous metals, facilitating smooth and effective processing.
5. Functions as a casting deoxidizer, streamlining production processes while maintaining exceptional quality.
6. Utilized in glass anti-reflective coating, providing enhanced protection and clarity.
7. Employed as an emulsifier for enamel, ensuring a smooth and consistent finish.
8. Acts as an opalizer for glass, adding a touch of elegance and sophistication to glass products.
9. Integral as a flux in the formulation of welding consumables, ensuring robust and reliable welding outcomes.
10. Used as a filler in the ceramic industry, contributing to the creation of durable and high-quality ceramic products.
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