| Customization: | Available |
|---|---|
| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, renowned in scientific circles as sodium hexafluoroaluminate or sodium aluminum fluoride, is a chemical compound of note, boasting a molecular formula of Na3AlF6. Presenting as a white, fine crystalline powder, this compound is not only odorless but also possesses a solubility superior to that of its natural counterpart. With a specific gravity of 3 and a modest hardness rating between 2 to 3, it exhibits a melting point reaching an impressive 1009 degrees Celsius. This remarkable material is hygroscopic, meaning it has a tendency to absorb moisture from its surroundings. Cryolite serves as a crucial component in various industrial applications: it is primarily employed as a flux in the electrolysis of aluminum, acting as a wear-resistant filler in rubber and grinding wheels, as an agent for the whitening of enamel, a solar filter in glass, a metal flux, and even as an agricultural insecticide. The Hall-Heroult process, pivotal in the production of aluminum, relies on a fluoride melt based on cryolite as a solvent. To this day, cryolite remains unrivaled, as no alternative compound has matched its indispensable properties perfectly.
| 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 serves as a vital flux for aluminum electrolysis, enhancing efficiency and output.
2. Acts as a wear-resistant additive within grinding products, significantly boosting their wear resistance, enhancing cutting and cutting forces of grinding wheels, and thereby prolonging both their operational life and storage durability.
3. Functions as a flux within ferroalloy production and in the creation of boiling steel, contributing to streamlined metallurgical processes.
4. Operates as a non-ferrous metal flux, optimizing the refinement and production processes of valuable metals.
5. Serves as a casting deoxidizer, ensuring high-quality results in metal casting applications.
6. Utilized in glass manufacturing, it aids in creating anti-reflective coatings, enhancing both aesthetic and functional properties of glass products.
7. Acts as an emulsifier for enamel, ensuring smooth applications and finishes in enamel products.
8. An opalizer for glass, it contributes to the creation of stunningly beautiful glass products with opalescent properties.
9. Used as a flux in welding consumables, it enhances the quality and reliability of welds.
10. Serves as a filler within the ceramic industry, improving the quality and durability of ceramic products.
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