| Customization: | Available |
|---|---|
| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, also known as sodium hexafluoroaluminate or sodium aluminum fluoride, is a remarkable compound with the molecular formula Na3AlF6. It appears as a white fine crystal, is odorless, and possesses a solubility surpassing that of natural cryolite. With a specific gravity of 3 and a hardness rating between 2 and 3, it melts at an impressive 1009 degrees Celsius. However, cryolite tends to absorb moisture easily. This versatile compound is prominently utilized as a flux in aluminum electrolysis, a wear-resistant filler in rubber and grinding wheels, and serves as an enamel whitening agent and a glass sunscreen. Additionally, it functions as a metal flux and as a crop insecticide. The Hall-Heroult method leverages a cryolite-based fluoride melt as a solvent to produce metallic aluminum, as no alternative has yet been discovered to replace cryolite due to its unique and essential properties, which extend beyond its primary functions.
| Model | Chemical composition( mass fraction)/% |
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| F | AI | Na | SiO2 | Fe2O3 | so4²- | CaO | P2O5 | Hygrosco pic moisture |
Ignition loss (mass fraction) |
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| ≥ | ≤ | ||||||||||
| 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. It serves as an essential flux for aluminum electrolysis, enhancing efficiency and effectiveness in the process.
2. Acts as a superior wear-resistant additive for grinding products, significantly boosting the wear resistance, cutting power, and force of grinding wheels, thereby extending their service life and storage longevity.
3. Utilized as a reliable flux for ferroalloy and boiling steel, facilitating smoother processes and superior results.
4. A versatile non-ferrous metal flux that enhances performance and reliability in diverse metallurgical applications.
5. Functions as an effective casting deoxidizer, ensuring high-quality casting results by minimizing oxidation.
6. Employed for glass anti-reflective coating, contributing to enhanced clarity and reduced reflections.
7. Acts as an emulsifier for enamel, stabilizing formulations and ensuring uniform quality and appearance.
8. Used as an opalizer for glass, enhancing the aesthetic appeal by imparting a beautiful opalescent finish.
9. Vital as a flux for welding consumables, ensuring strong and durable welds with reduced defects.
10. Serves as a filler for the ceramic industry, offering improved structural integrity and finish quality in ceramic products.
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