SicoMill®

SicoMill® is a finely ground silicon (Si) powder, especially developed for the ceramic industry. Vesta offers five different standard grades, in addition to our customized powder grades.

SICOMILL
SILICON POWDER

Chemical Properties
Purity ( typical analysis )
Element

Weight %

Grade 2

Grade 4

Typical

Max / min

Typical

Max / min

Si
98.6 %
99.0 %
Fe
0.40
0.30 - 0.50
0.07
0.03 - 0.09
Al
0.15
0.08 - 0.20
0.07
0.05 - 0.11
Ca
0.05
0.03 - 0.08
< 0.01
< 0.02
C
< 0.06
0.10
< 0.10
< 0.15
O2*
0.2 - 1.0

-

0.2 - 1.0

-

* Oxygen content dependent on particle size distribution

Physical Properties
Particle size distributions ( typical analysis )
Size
Distribution
Cut off
Bulk density
Surface area
(µm)
(µm)
(g/cm3)
(m2/g;BET)
d10
d50
d90

apparent tapped

B
10
40
60
98%<100 µm
1.0
1,4
0.4
C
3
11
25
98%<30 µm
0.7
1.1
1.2
D
2
7
13
99.5%<30 µm
0.6
0.9
2.1
E
1
4
8
99.9%<20 µm
0.5
0.8
3.5
Particle size distribution is measured by laser instrument (Malvern).Used parameters: presentatiom 5UHD, refractive index powder 3,1255.0,1.

Particle morphology
The SICOMILL production system is based on the principle of fluid-energy milling in order to minimise contamination.A powder produced by this method has a morphology with relative sharp edges and a narrow particle size distribution.




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