Our Products
Silicon metal is used, among other things, as an aluminium alloyant; it is also employed in the chemicals industry for the manufacture of siloxanes and silicones. Our silicon metal output is, to a large extent, already covered by long-term purchase agreements involving German companies as the primary customers, thus contributing to the security of raw material supplies to Germany.
Two byproducts are also part of the production process. These are silicon slag and MicroSilica. Both these product will be sold to customers around the world.
Silicon Metal
Simin |
Femax |
Almax |
Camax |
CO2
|
|
|---|---|---|---|---|---|
PCC BakkiSilicon 97 |
97.0 % |
1.80 % |
3.1 |
||
PCC BakkiSilicon 553 |
98.5 % |
0.50 % |
0.50 % |
0.30 % |
3.1 |
PCC BakkiSilicon 551 |
98.5 % |
0.50 % |
0.50 % |
0.10 % |
3.1 |
PCC BakkiSilicon 441 |
99.0 % |
0.40 % |
0.40 % |
0.10 % |
3.1 |
PCC BakkiSilicon 4402 |
99.0 % |
0.40 % |
0.40 % |
0.02 % |
3.1 |
PCC BakkiSilicon 421 |
99.0 % |
0.40 % |
0.20 % |
0.10 % |
3.1 |
PCC BakkiSilicon 411 |
99.0 % |
0.40 % |
0.10 % |
0.10 % |
3.1 |
PCC BakkiSilicon 3303 |
99.0 % |
0.30 % |
0.30 % |
0.03 % |
3.1 |
PCC BakkiSilicon 2510 |
99.0 % |
0.25 % |
0.10 % |
3.1 |
|
PCC BakkiSilicon 2502 |
99.0 % |
0.25 % |
0.25 % |
0.02 % |
3.1 |
PCC BakkiSilicon 2202 |
99.0 % |
0.20 % |
0.20 % |
0.02 % |
3.1 |
Size:
- 0 – 3/5 mm, 0 – 8 mm, 5 – 30 mm, 8 – 100 mm, 30 – 100 mm
- Silicon Metal Fines can be milled up to customer’s request
Packing: Big Bags with/ without pallets, bulk into container/ bulk vessel
Specific customer requirements and other sizing on request
Microsilica
Average Analysis (dry material)
| SiO2 (diff.) | 95.0 % |
| Si | 0.1 % |
| CI- | 0.03 % |
| SO3 | 0.3 % |
| Na2Oeqv | 1.0 % |
| CaOfree | <0.01 % |
| Moisture when packed (378K) | 0.2 % |
| LOI – Undensified (1023K) – Densified (1223K) |
2.5 % 2.0% |
| pH | 6.0 |
| Specific surface | 25.0 m2/g |
| Activity Index | 120.0 % |
| Particle size (Primary particles > 45 μm) |
4.0 % |
| Bulk density when packed – Undensified – Densified |
320 kg/m3 600 kg/m3 |
Packing: Big Bags with/ without pallets
Silicon Powder
Silicon Powder 0-0.070 mm
| Chemical composition: | Screen analysis: |
| Si >98.0 % | > μ71 Max. 10 % |
| Fe ca. 0.6 % | |
| Al ca. 0.5 % | |
| Ca ca. 0.2 % | |
| Ti ca. 0.1 % |
Silicon Powder 0-0.200 mm
| Chemical composition: | Screen analysis: |
| Si >97.5 % | > 0.5 mm 0.2 % |
| Fe ca. 0.7 % | > 0.2 mm 0.5 % |
| Al ca. 0.6 % | > 0.1 mm 4.0 % |
| Ca ca. 1.0 % | > 0.08 mm 7.0 % |
| Ti ca. 0.1 % | > 0.05 mm 20.0 % |
| > 0.02 mm 50.0 % | |
| < 0.02 mm 18.3 % |
Silicon Powder D50 = 100 – 350 nm
| Particle size distribution | Adjustable according to requirements |
| Shape | flakes |
| Specific surface (BET) | 10-100 m²/g (dependent on particle size distribution) |
| Specific discharge capacity (mAh/g on active material level, based on Si nanoparticles) | 3100 mAh/g @ 1/20 C; 0.01-1.2 V 2400 mAh/g @ 0.5 C; 0.01-1.2 V |
| Initial coulombic efficiency | >85% |
| Function | Precursor, intermediate product, raw material, anode active material, anode material, capacity increasing, fast charging capability |
Secondary Products
| Carbon Electrode Break | Original diameter 1272 mm, ash 2.50 % max. |
| Quartz Sand | Screen undersize |
| Silicon Sculls | Si-level 90% |
| Dross | Si-level 45% |
| Silicon Fines |
Other Secondary Products on request