What is metallic silicon

1.) Properties and uses of metallic silicon

Metallic silicon, also known as pure silicon, is a gray-black metal with the chemical symbol Si. Its atomic number is 14, and it has properties such as high melting point, high hardness, and strong corrosion resistance. Therefore, metallic silicon is an important industrial raw material and is widely used in the manufacture of semiconductor materials, cast iron, and special alloys.

First of all, metallic silicon is an important raw material for semiconductor materials. It can be made into semiconductors of different types and uses, such as solar panels, transistors, integrated circuits, etc. Among them, integrated circuits made of metallic silicon are extremely widely used. Various electronic products such as computers and mobile phones require the support of integrated circuits.

Secondly, metallic silicon is also an important component of cast iron and special alloys. In these materials, metallic silicon can enhance hardness and strength and improve the performance of the material. For example, adding an appropriate amount of metallic silicon can make cast iron hard, and it has good anti-oxidation and wear resistance, and is widely used in automobile manufacturing, engineering machinery and other fields.

2. )Preparation method of metallic silicon

1. Oxide method

This method is to subject silica to multiple reduction reactions to obtain a composite of metallic silicon and SiO2, and then to pickling, drying and other treatments, and then to distillation and purification, and finally to obtain metallic silicon with high purity. The advantages of this method are low production cost and high purity products, so it is widely used in industrial production.

2. Direct reduction method

This method is to mix ore and coke, perform high-temperature reduction reaction, obtain an alloy containing metallic silicon, and then purify the metallic silicon by distillation and other methods. Although the production process of this method is simple, the reduction reaction requires high temperature and high pressure, so the production cost and energy consumption are high.

In general, metallic silicon is a very important industrial raw material with broad application prospects and market demand. With the development of technology, the preparation technology of metallic silicon is also constantly improving, and it will be more mature and optimized in the future.