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High sodium molecular ratio Synthetic cryolite CH-1 for Aluminum auxiliary material
Cryolite instructions
Ⅰ, cryolite, physical and chemical properties
Formula Na3AlF6, molecular weight is 209.94, is a kind of complexing compound or NaF and double salt of AlF3, color due to the impurities in white, gray, yellow powder or crystal particles, its melting point 1025 ℃, the bulk density of 0.6 ~ 1.0 g/L, true density is 2.95 ~ 3.05 g/cm3, generate heat 225 kj, specific gravity is 2.75 ~ 3.00 g/cm3, heat of fusion of 107 kj.
Ⅱ, the main purpose
Mainly used for aluminium electrolytic fluxing agent, also used as abrasive products resistant additives, ferroalloy and rimmed steel flux, flux, non-ferrous metal casting deoxidizer slag agent, emulsifier of enamel, glass, milky white agent, flux welding materials, ceramic filler, pesticides, pesticides and other industries enterprises.
Ⅲ, The quality standards
GB4291-2007standard
model | Chemical composition(mass fraction)/% | Physical property | ||||||||
| F | Al | Na | SiO2 | Fe2o3 | SO42- | CaO | P2O5 | Hygroscopic moisture | Ignition loss(massfraction) | |
| ≥ | ≤ | |||||||||
| CH-0 | 52 | 12 | 33 | 0.25 | 0.08 | 0.6 | 0.15 | 0.02 | 1.5 | 2.0 |
| CH-1 | 52 | 12 | 33 | 0.36 | 0.08 | 1.0 | 0.20 | 0.03 | 1.3 | 2.5 |
| CM-0 | 53 | 13 | 32 | 0.25 | 0.05 | 0.6 | 0.20 | 0.02 | 0.7 | 2.0 |
| CM-1 | 53 | 13 | 32 | 0.36 | 0.08 | 1.0 | 0.60 | 0.03 | 0.7 | 2.5 |
Note: the molecular ratio of 2.80 to 2.80 for the polymer than cryolite (CH), molecular ratio of 1.00 to 2.80 for the common cryolite (CM).
Ⅳ,packaging and weight
Fumo plastic woven bag, lined with plastic film bags, bags of 25 kg net each, 50 kg, according to the requirements of the inspection or foreign export products.
