1. Naming and Classification
Silicon metal: Silicon metal is a trade name that emerged in the mid-1960s and is sometimes referred to as crystalline silicon. Its naming and categorization are mainly based on its use and silicon content, and although it is sometimes called industrial silicon, it is more often used as an additive for non-ferrous base alloys.
Industrial Silicon: Industrial silicon, also known as quasi-metallic silicon, is also a trade name that emerged in the mid-1960s. Its classification is mainly based on factors such as silicon content, impurity content and particle size. According to the national standard (GB/T 2881-2014), industrial silicon is classified into specifications such as 5530#, 4410#, 4210#, 3303#, 2202# and so on, based on the difference in silicon content and the content of the three main impurities iron, aluminum and calcium.
2. Composition and purity
Both the main component is silicon, the content of about 98% (in recent years, the amount of Si 99.99% is also included), the remaining impurities for iron, aluminum, calcium and so on.
The purity requirements of industrial silicon is usually higher, because it is mainly used in the semiconductor and electronics industry with high purity requirements.
3.Uses
Industrial silicon is mainly used in the semiconductor and electronic industries, such as the manufacture of electronic components, high purity glass, solar panels and semiconductor materials. Especially with the prosperous development of the semiconductor industry, the market demand for industrial silicon is also growing.
Although silicon metal also contains high silicon purity, but its purity requirements are relatively low, the purity of about 96% can meet the needs of most applications. It is mainly used for smelting and synthesizing other silicon compounds, and is widely used in the iron and steel, foundry, and aluminum industries. In addition, it can also be used in the manufacture of photovoltaic cells, light panels and the production of refractory materials.
