Silicon powder

The basic concept of silicon powder

silicon powder, also known as silicon powder or silicon ash, is a powdery substance made from silicon dioxide (SiO2). It is a functional filler widely used in industry, mainly used in the manufacture of various high-performance products, such as ceramics, glass, coatings, rubber, plastics and so on.

Application field of silicon powder

1. Ceramic field: Silicon powder is mainly used as an important raw material for high-performance ceramics, such as high-grade refractory materials, ceramic capacitors, ceramic sealing rings, etc.

2. Glass field: silica powder can be used to make a variety of special glass, such as high silica glass, quartz glass, etc.

3. Coating field: silica powder can be used as a coating additive to improve the corrosion resistance, wear resistance and high temperature resistance of the coating.

4. Rubber field: silica powder can improve the tear strength, wear resistance and high temperature resistance of rubber.

5. Plastic field: Silicon powder can improve the processing performance, high temperature resistance and insulation performance of plastics.

Silicon powder production process

The production of silicon powder is mainly carried out through the following steps:

1. Raw material preparation: natural quartz stone is mainly used for crushing and cleaning to obtain high purity quartz sand.

2. Smelting into a lead: the quartz sand is melted into a silicon lead, and then it is broken and crushed to obtain coarse silicon powder.

3. Fine treatment: through pickling, bleaching, drying and other processes to further remove impurities in the crude silicon powder, improve its purity.

4. Grinding and grading: Through the grinding and grading equipment, the coarse silicon powder is ground into the required fineness of silicon powder.

5. Packaging and transportation: The qualified silicon powder is packaged to prevent it from being contaminated or oxidized, and then transported to the downstream manufacturer.

Characteristics of silicon powder

1. High purity: the purity of silicon powder is high, and the content of silicon dioxide can reach more than 99%.

2. Good chemical stability: silicon powder has good acid resistance, alkali resistance, corrosion resistance, and is not easy to react with the surrounding environment.

3. High thermal stability: silicon powder has extremely high heat resistance and can be stable at high temperatures.

4. Good electrical insulation: silicon powder has good electrical insulation properties and is not easy to conduct electricity.

5. Good wear resistance: silicon powder has high wear resistance and can maintain good performance under friction and wear conditions.

The development trend of silicon powder

1. High purity: With the progress of industrial technology and the improvement of material performance requirements, the purity requirements of silicon powder are also increasing, and there will be higher purity silicon powder products in the future.

2. Ultra-fine: With the continuous development of nanotechnology, the demand for ultra-fine silicon powder is also increasing, and there will be more ultra-fine silicon powder products in the future.

3. Multi-functional: With the continuous growth of market demand, the demand for silicon powder with multiple functions is also increasing, such as new silicon powder with conductive, magnetic, optical and other functions will continue to emerge.

4. Environmental protection: With the continuous improvement of environmental awareness, the environmental protection requirements in the production process are also improving, and there will be more environmentally friendly silicon powder production processes and technologies in the future.

In short, silicon powder, as an important industrial raw material, will be more widely used in the future. With the continuous progress and innovation of technology, the product performance and function of silicon powder will also continue to improve, providing more possibilities for industrial development and human life.

Post time: Sep-05-2023