Silicon is produced in the form of pieces ranging in size from 0 to 2 mm, from 2 to 10 mm, from 10 to 60 mm, from 60 to 100 mm. By agreement with the consumer, silicon may have a fraction of 10 to 100 mm, of 2 to 100 mm, of 2 to 60 mm.
Silicon grades and chemical composition correspond to the details, specified in the following table:
|
Grade |
Mass percentage |
|||
|
Si, %, no less than |
Impurities, %, no more than |
|||
|
Fe |
Al |
Ca |
||
|
2202 |
99,5 |
0,20 |
0,20 |
0,02 |
|
3301 |
99,0 |
0,30 |
0,30 |
0,01 |
|
3303 |
99,0 |
0,30 |
0,30 |
0,03 |
|
331 |
99,0 |
0,30 |
0,30 |
0,10 |
|
4401 |
99,0 |
0,40 |
0,40 |
0,01 |
|
4403 |
99,0 |
0,40 |
0,40 |
0,03 |
|
441 |
99.0 |
0,40 |
0,40 |
0,10 |
|
553 |
98,5 |
0,50 |
0,50 |
0.30 |
|
773 |
98,0 |
0,70 |
0,70 |
0,30 |
|
Кр00 |
99,0 |
0,40 |
0,30 |
0,40 |
|
Кр0 |
98,8 |
0,50 |
0,40 |
0,40 |
|
Кр1 |
98,0 |
0,70 |
0,70 |
0,60 |
|
Кр2 |
97,0 |
1,00 |
1,20 |
0,80 |
|
Кр3 |
96,0 |
1,50 |
1,50 |
1,50 |
Areas of use: Technical silicon is used in the following areas of industry:
- As a raw material for the production of more pure polycrystalline silicon and refined metallurgical silicon;
- As a raw material for the production of "solar" silicon for solar cells;
- In the production of silumin and other Al-Si alloys;
- In the production of ferrosilicon, ferrosilicomanganese, ferrosiliconocalcium and other ferroalloys;
- In the production of organo-silicon compounds.
Shipment method: packaged in a "big-bag" type container weighing 900 - 1000 kg.
Quality certificates