| Customization: | Available |
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| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, an exceptional compound also known as sodium hexafluoroaluminate or sodium aluminum fluoride, boasts the chemical formula Na3AlF6. As a white, fine crystal, it is odorless and exhibits a solubility greater than that of natural cryolite. Its specific gravity is 3, with a hardness of 2 to 3, and it melts at an impressive 1009 degrees Celsius. This compound is hygroscopic, meaning it readily absorbs moisture. Cryolite's versatility extends to various industries: it acts as a flux in aluminum electrolysis, serves as a wear-resistant filler for rubber and grinding wheels, is used as an enamel whitening agent, and functions as a sunscreen in glass. Additionally, it is employed as a metal flux and as an insecticide for crops. The renowned Hall-Heroult process utilizes a cryolite-based fluoride melt as a solvent to produce metallic aluminum—a testament to its unmatched properties, which remain irreplaceable to this day.
| Model | Chemical composition( mass fraction)/% |
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| F | AI | Na | SiO2 | Fe2O3 | so4²- | CaO | P2O5 | Hygroscopic 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. Primarily utilized as a flux in aluminum electrolysis to enhance process efficiency.
2. Serves as a robust wear-resistant additive in grinding products. This significantly boosts the wear resistance, cutting precision, and cutting force of grinding wheels, thereby extending their lifespan and shelf life.
3. Acts as an essential flux in ferroalloy and boiling steel production, contributing to enhanced quality.
4. Integral as a flux for non-ferrous metals, ensuring superior melting performance.
5. Widely used as a casting deoxidizer, improving casting purity and integrity.
6. Essential in glass manufacturing, particularly in anti-reflective coatings that enhance clarity and quality.
7. Functions as an effective emulsifier for enamel, ensuring smooth and consistent texture.
8. Acts as an opalizer in glass production, imparting a stunning opalescent finish.
9. Utilized as a flux for welding consumables, ensuring strength and durability in welds.
10. Serves as a vital filler in the ceramic industry, enhancing the quality and durability of ceramic products.
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