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[Chemical Knowledge]：Properties and Uses of Silicon Metal

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The properties and uses of silicon metal are of great significance in the field of raw materials for chemical production. This paper will discuss in detail the properties of silicon metal, production methods, and the application in the production of different chemicals.

1. the properties of metallic silicon

metallic silicon is a non-metallic element with excellent properties and is located in Group IV of the periodic table. It has the following properties:

1. Physical properties: Metal silicon has a silver-white metallic luster, high hardness, a melting point of 1414°C, and a boiling point of 2355°C. It has good thermal and electrical conductivity.
2. Chemical properties: Metal silicon is chemically stable at room temperature and is not easy to react with oxygen, nitrogen and other gases. But at high temperatures, it can react with many elements to form the corresponding silicide. The production method of

2. metal silicon

metal silicon production mainly adopts electrolytic method, with silica (the main component is silicon dioxide) as raw material, carbon as reducing agent, high temperature smelting in electric arc furnace. In the production process, it is necessary to control the electrode voltage, current and temperature in the furnace to ensure product quality.

3. the application of metal silicon in the production of chemical products

metal silicon in the production of chemical products has a wide range of applications, the following list of several main areas:

1. organic silicon compound production: metal silicon can react with organic halides such as methyl chloride to generate organic silicon compounds, such as dimethyl dichlorosilane. Silicone compounds have excellent high temperature resistance, oxidation resistance, weather resistance and other properties, widely used in sealants, coatings, rubber and other fields.
2. Ceramic production: Metal silicon can be used as the main raw material for ceramic production, mixed with alumina, magnesium oxide and other raw materials, and sintered at high temperature to make ceramic products. Ceramics have high strength, high hardness, high wear resistance and other properties, and are widely used in aerospace, automotive, electronics and other fields.
3. Semiconductor materials: Metal silicon is used as a substrate material in the semiconductor industry. By doping different elements, it can be made into N-type or P-type semiconductors, and then make electronic components such as integrated circuits and transistors.

4.
of storage and transportation of metal silicon
metal silicon should be stored in a dry and well-ventilated room to avoid contact with acid, alkali and other corrosive substances. Moisture and rain should be prevented during transportation to ensure product quality.

summary: Metal silicon has an important position in the field of chemical production raw materials, and its excellent properties and wide range of uses make metal silicon become the key raw material in the production process of many chemical products. In the production process, the properties and production methods of metal silicon should be fully understood to ensure product quality and production efficiency. At the same time, the storage and transportation of metal silicon also need to pay attention to ensure the stability and reliability of the product. With the continuous development of science and technology, the application of metal silicon in the field of chemical production will be more extensive, providing more possibilities for the prosperity and development of the chemical industry.

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