What elements does industrial silicon contain?
Industrial silicon is mainly composed of silicon elements, and also contains a small amount of impurity elements. Industrial silicon mainly contains the following elements:
| Grade | Chemical Composition % | |||
| Si Content(%) | Impurities(%) | |||
| Fe | Al | Ca | ||
| Silicon Metal 2202 | 99.58 | 0.2 | 0.2 | 0.02 |
| Silicon Metal 3303 | 99.37 | 0.3 | 0.3 | 0.03 |
| Silicon Metal 411 | 99.4 | 0.4 | 0.4 | 0.1 |
| Silicon Metal 421 | 99.3 | 0.4 | 0.2 | 0.1 |
| Silicon Metal 441 | 99.1 | 0.4 | 0.4 | 0.1 |
| Silicon Metal 551 | 98.9 | 0.5 | 0.5 | 0.1 |
| Silicon Metal 553 | 98.7 | 0.5 | 0.5 | 0.3 |
| Other chemical composition and size can be supplied upon request. | ||||
1. Silicon element: The main component of industrial silicon is silicon element, and its chemical symbol is Si. Silicon is one of the abundant elements in the earth's crust and one of the indispensable raw materials in human production activities. The content of silicon in industrial silicon is usually above 99%.
2. Impurity elements: Industrial silicon contains a small amount of impurity elements, mainly aluminum, iron, calcium, sodium, potassium and other elements. The content of these impurity elements is generally in the range of a few thousandths to a few percent, which has a certain impact on the purity of silicon.
3. Sulfur: Industrial silicon also contains a small amount of sulfur, whose chemical symbol is S. The content of sulfur is usually in the range of a few thousandths to a few percent. Sulfur has a certain effect on the performance of silicon, and the content of sulfur usually needs to be controlled.
4. Oxygen: Industrial silicon also contains a small amount of oxygen, whose chemical symbol is O. Oxygen mainly comes from the smelting and oxidation process in the production process of industrial silicon. Oxygen has a certain effect on the performance of silicon, and the content of oxygen usually needs to be controlled.
5. Nitrogen: Industrial silicon also contains a small amount of nitrogen, whose chemical symbol is N. Nitrogen mainly comes from nitrogen in the air during the smelting process. The content of nitrogen has a certain effect on the performance of silicon, and the content of nitrogen usually needs to be controlled.
Industrial silicon mainly contains silicon and a small amount of impurity elements. The content of impurity elements has a certain effect on the performance and use of silicon. In order to ensure the quality of industrial silicon, its composition usually needs to be strictly controlled and analyzed.