Synthetic Cryolite
Chemical Name: Sodium Fluoroaluminate
Molecular Formula: Na3AlF6
Molecular Weight: 210
CAS No.: 15096-52-3
Appearance: White powder
Applications:
- Aluminium metallurgy: as component of fluxing agents, protective and refining salts
- Production of abrasives: as active filler in resin bonded abrasives for metal treatment
- Production of enamel, glazing frits and glass: as flux and opacifying agent
- Production of soldering agent: as component for fluxing agents
- Production of welding agents: as component of welding rod coatings and welding powders
- Blasting and pyrotechnics: for fireworks
- Metal surface treatment: as component in pickling pastes for stainless steel
CHEMICAL PROPERTIES
Na3AlF6 96.5%min
F 52-54%
Na 28-33%
Al 12.5-14%
SiO2 0.36%max
Fe2O3 0.05%max
SO3 0.50%max
H2O at 110oC 0.3%max
LOI 2.5%max
PARTICLE SIZE DISTRIBUTION
+100mesh 0
+200mesh 10%max
Density 2.95-3.05g/cm3
Bulk Density 0.6-1.0 g/l
Packing: in 25kgs PP bags or 1000kg big bags
Aluminium Fluoride is produced by reacting wet (3-7% H2O) Aluminium Hydroxide with the Hydrofluoric Acid gas in a one bed expanded fluid bed reactor.
Aluminium Fluoride produced in this process will achieve higher purity, lower content of impurity, especially the SiO2 only 0.02-0.05%, P2O5 0.007%, which will provide better performance in the application of primary Aluminium smelting.
Commodity Potassium Fluoroborate
Molecular formula KBF4 Molecular weight 125.9 Property White powder . Density :2.498g/m3 . Melting point and starting to decompose at that point. Slightly dissolve in water and hot alcohol .
Ca 0.05%
CI 0.1%
Fe 0.03%
Heavy Metal 0.01%max
SO4 0.01%max
Mg 0.01%
POTASSIUM ALUMINIUM FLUORIDE PAF
PROPERTIES
Molucular formular is KAlF4.
PAF is white powder or granular mainly used as production material of boron containing alloy cast by aluminium and magnesium, fusing agent of thermal welding and aluminum braze welding; and also for the production of abrasives, glass and ceramic so on.
CHEMICAL COMPOSITION
F 47 - 53%
K 27 - 33
Al 17 21%
Fe2O3 0.05% Max or 0.5%max (grey)
PARTICLE SIZE
Sandy -40mesh 90% Min
Powder A -200mesh 90% Min
B -325mesh 90% Min
Guanular A -1mm 90% Min
B -4mm 90% Min
Lump
PHYSICAL PROPERTIES
Typical density 2.9 g/cm3
It is a Colorless crystal or white powder with relative density of 3.148, mp 126 C,bp 2239 C. It is soluble in nitric acid, slightly soluble in diluted acid, insoluble in water and alcohol.
Applications It is used as flux of smelting magnesium, as additive of electrolysis aluminium, in coating optical lenses and filter, in coating agent of titanium pigment, in fluorescent agent of cathode ray screen. It is also used in ceramic and glass industry.
Specification
MgF2 98%min
F 46%min
Mg 30%min
Ca 0.5%max
SiO2 1.2%max
Fe2O3 0.80%
H2O 5.0%max
LOI 20%max
Size
-200mesh 80%min
Packing: in 25kgs PP bags or 1000kgs big bags, or according to customer requirement.
