What are the chemical components of silicon metal

Jul 25, 2019 / 968 views

Regarding the chemical composition of metallic silicon, many people have such a misunderstanding that it contains only silicon. When nature's matter is formed, it is not a single substance. So what are the chemical components of silicon metal? Let's take a look.

How to get silicon metal?

Quartz is one of the most widely distributed minerals on the earth's surface and is the main mineral component of silica ore. Containing 46.70% silicon. Coke is a kind of solid fuel, which has high calorific value and is produced by high-temperature dry distillation of coal. It is mostly used for iron making. Metal silicon is a product made of quartz and coke smelted in an electric furnace.

Metal silicon has a block shape and a powder shape. Some customers will require silicon blocks, while others will require metal silicon powder. This depends on customer requirements.

Silicon metal chemical composition

Among the metal silicon, silicon is the main element, and it can often reach 97%-99.79%. The other elements are iron, aluminum and calcium. Metal silicon is divided into different grades because of different needs. Such as 553, 441, 3303, 2202, and so on. Metal silicon grade specifications>>

These grades are named according to the difference in the content of ferro, aluminum and calcium in the silicon metal. Take 553 as an example:

The chemical element of the metal silicon 553 has an ferro content of 0.5%, an aluminum content of 0.55%, a calcium content of 0.3%, and a silicon content of 98.5%.

After reading this example, I believe that many people have a certain understanding of the naming of the brand. I won’t say more here.

The main downstream of metal silicon includes silicon alloy, silicone, and polysilicon. In terms of alloys, metal silicon is used to produce silicon aluminum alloy, copper silicon alloy, and silicon steel. High-silicon aluminum alloy is a binary alloy composed of silicon and aluminum. It is a promising electronic packaging material, especially in high-tech fields such as aerospace, space technology and portable electronic devices.

In 2016, China's metal silicon exports amounted to 700,000 tons. In 2017, the export volume increased to 810,000 tons. With the increasing demand for overseas metal silicon, overseas metal silicon enterprises have no large-scale expansion plans. It is expected that the future export volume of metal silicon will increase year by year. Upgrade.

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