| Customization: | Available |
|---|---|
| CAS No.: | 15096-52-3 |
| Formula: | Na3alf6 |
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Cryolite, officially known as sodium hexafluoroaluminate or sodium aluminum fluoride, boasts the molecular formula Na3AlF6. It is a pristine white fine crystal that is odorless and more soluble than natural cryolite. With a specific gravity of 3 and a hardness ranging from 2 to 3, it exhibits a melting point of 1009 degrees Celsius. Cryolite is hygroscopic, meaning it readily absorbs moisture. This versatile material is paramount in various applications: it is a critical flux in aluminum electrolysis, enhances wear resistance when used as a filler in rubber and grinding wheels, serves as an enamel whitening agent, provides sun-screening properties in glass, acts as a metal flux, and even functions as an insecticide for crops. A cornerstone in the Hall-Heroult method, cryolite's fluoride melt serves as a solvent in the production of metallic aluminum. To date, no alternative compound matches its indispensable attributes.
| 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 an essential flux in the process of aluminum electrolysis, ensuring efficient and high-quality production.
2. Functions as a wear-resistant additive in grinding products, significantly boosting their durability and effectiveness. This leads to enhanced wear resistance, improved cutting force, and prolongs the lifespan and storage duration of grinding wheels.
3. Acts as a crucial flux for the production of ferroalloys and boiling steel, optimizing the metallurgical processes and enhancing material quality.
4. Serves as an indispensable flux for non-ferrous metals, facilitating smooth processing and superior material outcomes.
5. Employed as a casting deoxidizer, it effectively removes unwanted oxygen during casting, resulting in purer and stronger metal casts.
6. Utilized in the application of glass anti-reflective coatings to enhance optical clarity and reduce glare.
7. Acts as an emulsifier in enamel, ensuring uniform texture and consistency, leading to higher quality finishes.
8. Functions as an opalizer in glass production, endowing glass with unique visual properties that enhance its aesthetic appeal.
9. Serves as a flux in welding consumables, enhancing the welding process and improving joint integrity and strength.
10. Used as a filler in the ceramic industry, contributing to the creation of robust and durable ceramic products with improved structural integrity.
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