| Customization: | Available |
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| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, known as sodium hexafluoroaluminate or sodium aluminum fluoride, is a remarkable compound with the molecular formula Na3AlF6. It appears as a white fine crystal, devoid of any odor, and boasts a solubility superior to that of its natural counterpart. With a specific gravity of 3 and a hardness ranging from 2 to 3, this compound melts at a temperature of 1009 degrees Celsius and tends to absorb moisture from the environment. Widely utilized in various industrial applications, cryolite serves as a flux in aluminum electrolysis, contributes as a wear-resistant filler for rubber and grinding wheels, acts as a whitening agent for enamel, provides sunscreen properties for glass, functions as a metal flux, and even serves as an insecticide for crop protection. The renowned Hall-Héroult process uniquely employs cryolite in a fluoride melt to produce metallic aluminum—a testament to cryolite's unparalleled properties, which have yet to be substituted by any other compound.
| 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. Primarily utilized as a flux in the aluminum electrolysis process, enhancing efficiency and effectiveness.
2. Acts as a wear-resistant additive in grinding products, significantly enhancing the durability, cutting prowess, and longevity of grinding wheels, while also extending their storage lifespan.
3. Serves as a flux for ferroalloy and in the production of boiling steel, contributing to superior quality outputs.
4. Functions as a flux for non-ferrous metals, streamlining their processing and refining.
5. Utilized as a casting deoxidizer, it plays a crucial role in purifying and improving metal castings.
6. Integral for glass anti-reflective coatings, it contributes to enhanced clarity and protection.
7. An essential emulsifier for enamel, it aids in achieving smooth and consistent finishes.
8. Acts as an opalizer for glass, bringing about stunning visual effects and enhanced aesthetics.
9. Employed as a flux in welding consumables, it ensures stronger, more reliable welds.
10. Functions as a filler in the ceramic industry, contributing to the integrity and quality of ceramic products.
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