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Low sodium molecular ratio Synthetic Cryolite for Refractory industry
Cryolite
1. Cas no:15096-52-3;1344-75-8;13775-53-6;12397-51-2
2. It is colorless monoclinic system crystal
3. Assay:99% min
Properties for cryolite
It is colorless monoclinic system crystal. Non-pure product is
greyish white, light yellow, light red or black. M.P.: 1025°C; bulk
density: 0.6-1.0g/L, true density: 2.95-3.05g/cm3; specific wt.:
2.75-3.00g/cm3, melting heat: 107KJ; slightly soluble in water,
aqueous solution is acidic.
Specification for cryolite
| Ingredient | Super | First grade | Second grade |
| F%≥ | 53 | 53 | 53 |
| Na% ≥ | 32 | 32 | 32 |
| Al≥ | 13 | 13 | 13 |
| H2O%≤ | 0.4 | 0.5 | 0.8 |
| SiO2≤ | 0.25 | 0.36 | 0.4 |
| Fe2O3%≤ | 0.05 | 0.08 | 0.10 |
| SO4%≤ | 0.7 | 1.20 | 1.30 |
| P2O5%≤ | 0.02 | 0.03 | 0.03 |
| Ignite on 550oC≤ | 2.5 | 3.00 | 3.00 |
| CaO%≤ | 0.10 | 0.15 | 0.20 |
Use for cryolite :
Mainly used as fluxing agent for aluminium electrolysis; also used
as anti-wear additive for abrasive products; as flux for iron alloy
and rimmed steel, as deoxidizer and residue eliminator for casting,
as emulsifying agent for enamel, as opacifier for glass etc.
Note for cryolite
1. Molecular proportion range: 1.0-3.0, adjustable to meet the
different needs of customers;
2. Fineness can be adjusted to meet the needs of
customers(-120~-325mesh);
3. Assay≥99%.
Packing & Weight for cryolite
In laminating plastic woven bag lined with plastic film, net wt.
25kg, 50kg, 1000kg/bag.
Items | Results of Analysis | Data |
F%≥ | 53.5 | 52-55 |
Na% ≥ | 32.2 | 28-33 |
Al≥ | 12 | 12-15 |
CaO%≤ | 0.18 | 0.20 |
P2O5%≤ | 0.026 | 0.03 |
SiO2≤ | 0.27 | 0.40 |
H2O%≤ | 0.25 | 0.80 |
Fe2O3%≤ | 0.09 | 0.10 |
SO4%≤ | 0.097 | 1.30 |
Ignite on 550oC≤ | 2.6 | 3.00 |
