Spherical silicon powder technology is a technology that uses natural fine quartz powder as raw material to produce silicon powder with low cost and high quality. Using a sol-gel process, in the presence of a dispersant and a spherical catalyst, high-purity spherical amorphous silicon powder is prepared, which is melted into spherical amorphous silicon powder by flame or ion flame method. In the high-end consumer market, such as integrated circuit packaging, the second process is use.

Spherical silicon powder is mainly used in large-scale integrated circuits, aerospace, fine chemicals, erasable optical discs, large-area electronic substrates, special ceramics, daily cosmetics and other high-tech fields, and has a huge market. Experts estimate that by 2010, China’s demand for spherical silica fume will be 20,000 to 30,000 tons, and high-purity silica fume will be 100,000 tons, with an average annual growth rate of over 20%. The world's demand for spherical silica fume will exceed 300,000 tons, worth 10 billion yuan.

With the rapid development of my country's microelectronics industry, the requirements for packaging materials for large-scale ultra-large-scale integrated circuits are becoming higher and higher, especially for the spherical particles. However, the preparation of spherical silica powder is an interdisciplinary and difficult subject. Currently, only a few, such as the United States, Japan, Germany, Canada and Russia, have mastered this technology. As we all know, spherical silica mainly comes from Japan and Korea. Imported spherical silica is expensive and has a long transportation cycle. The domestically produced high-quality spherical silica has the advantages of localization and can completely replace imports.

The above is a small series, telling you about the main process of making spherical silica powder. you can take a look. The content is for reference only, please contact us for any inquiry.