Synthetic Cryolite

Specification1: Sodium Fluoroaluminate

Physical properties

Density 2.95-3.05g/cm³

Appearance white, gray or pink

Applications

Aluminium- metallurgy:

– As component of fluxing agents, protective and refining salts

Production of abrasives:

– As active filler in resinbonded 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	Limit	Typical
Na3AlF6	96 %MIN	97.5%
F	52%min	52.8%
Al	14%min	12.5%
Na	33%max	31.6%
SiO2	0.40%max	0.33%
Fe2O3	0.05%max	0.007%
H2O	0.20%max	0.1%
LOI	2.0%max	1.58%
Particle size distribution
Bulk Density	0.6-1.0 g/cm³	0.76 g/cm³
+325 mesh	3%max	1%

Specification 2: Synthetic Cryolite 400MESH

Applications

Production of abrasives:

– As active filler in resinbonded abrasives for metal treatment

Chemical properties	Limit	Typical
Na3AlF6	96 %MIN	98.06%
F	53%min	54.84%
Al	14%min	16.27%
Na	30%max	26.95%
SiO2	0.20%max	0.13%
Fe2O3	0.05%max	0.031%
H2O	0.30%max	0.1%
LOI	2.0%max	1.58%
Particle size distribution
Bulk Density	0.6-1.0 g/cm³	0.76 g/cm³
+200mesh	0	0
-400 mesh	80%min	99.7%

A-C-30-A

99.0

0.10

0.04

0.5

0.20

93

3.93

2.5±1

Specification 3: Synthetic Cryolite 100MESH

Applications

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	Limit	Typical
Na3AlF6	96 %MIN	98.39%
F	53%min	54.63%
Al	14%min	15.96%
Na	30%max	27.8%
SiO2	0.50%max	0.30%
Fe2O3	0.05%max	0.031%
H2O	0.4%max	0.3%
LOI	2.0%max	1.58%
Particle size distribution
-100 mesh	80%min	83%

Specification 4: Synthetic Cryolite（Calcine）

Applications

Production of abrasives:

– As active filler in resinbonded 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	Limit	Typical
Na3AlF6	96 %MIN	98.06%
F	50%min	53.3%
Al	14-17%min	13.01%
Na	26-33%max	32%
SiO2	0.80%max	0.15%
Fe2O3	0.2%max	0.043%
H2O	0.20%max	0.05%
LOI	1.0%max	0.32%
Bulk Density	0.6-1.0 g/cm³	0.85 g/cm³
Particle size distribution
-325mesh	70%min	99.4%

Specification 5: Granular Synthetic Cryolite

Applications

As a flux in primary aluminium smelting. Thick size（0-10mm）and good fluidity, Convenient for mechanization and feeding automatically. Low melting point and fast melting, which can reduce the period of turning into normal working condition.

	A	B	C
Na3AlF6	98%min	97%min	97%min
F	53%min	53%min	53%min
Na	33%max	33%max	33%max
Al	12.5%min	12.5%min	12.5%min
NaF/AlF3 by Weight	1.35-1.55	1.35-1.55	1.35-1.55
SiO2	0.20%max	0.25%max	0.36%max
Fe2O3	0.05%max	0.08%max	0.10%max
SO3	0.30%max	0.5%max	0.60%max
CaO	0.15%max	0.30%max	0.43%max
P2O5	0.01%max	0.02%max	0.03%max
H2O at 110oC	0.2%max	0.30%max	0.40%max
L.O.I. at 550oC 1/2 Hour	0.50%max	1.0%max	2.0%max

Particle size distribution:

0-10mm 100%

-0.045mm 10%max

The grain size can be adjusted according to different requirement.

Packing: in 25kgs or 50kgs PP bags or multiply paper bags, or 1000kgs-1500kgs jumbo bags, or according to customer’s requirements.