Synthetic Cryolite
Formula:Na3AIF6
Specification: GB/T4291-1999
| Grade |
Chemical Composition % |
| F |
Al |
Na |
Sio2 |
Fe2O3 |
SO3= |
CaO |
P2O5 |
H2O |
Loss on Ignition ,
550 
30min |
| %min |
%max |
| GradeI |
53 |
13 |
32 |
0.25 |
0.05 |
0.7 |
0.10 |
0.02 |
0.4 |
2.5 |
| GradeII |
53 |
13 |
32 |
0.36 |
0.08 |
1.2 |
0.15 |
0.03 |
0.5 |
3.0 |
| GradeIII |
53 |
13 |
32 |
0.40 |
0.10 |
1.3 |
0.20 |
0.03 |
0.8 |
3.0 |
| High Moleculr Ratio |
53 |
13 |
32 |
0.10 |
0.05 |
1.0 |
0.05 |
0.03 |
0.5 |
molecular ratio
2.4 - 2.9 |
NOTE:
1. The chemical composation is calculated on dry
basis removed the adhesive moisture(except the loss on ignition).
2. The round-off number rule is stipulate as 5.2
of GB1250, and the rounded digit shall be consistant with the limiting
values listed in the forms.
3. Normally, NaF/AlF3
ratio is between 1.8-2.9,any special requirements should be indicated
in the contract.
4. Any requirements on the
loss on igniton below 2.5% should be indicated in the contract.
| PROPERTIES |
High
Molecular Ratio |
1. 4kinds of particle size are classified
as follows:
(a)The Granular:1 - 10mm
(b)The Sandy:0.074-1mm(16 - 200mesh)
(c)The Powder: 0.25mm(60mesh)
(d)The mixture of the above (a),(b),(c)
2. Colour: Grey-white, light-yellow,light-red
The chemical compositions of the product keepstable no matter
how it differs in colour and particle size. |
| Low
Molecular Ratio |
1. Colour:white powder
2. particle size:
(a)The granulars with the size 4mm
may be allowed, but their content can not be more than 5%.
(b)-300 meth 70%. |
Packing:
In plastic coating woven bags with plastic fiim and paper bags inside,
40 kgs, 50kgs or 1000kgs net each, or as the requirement of clients. |
