Ferro Silicon is an alloy made up of silicon and iron. Ferro Silicon can rust steel because it is a strong oxidant. They are used mostly to make special steels and only in very small amounts to make mild steel. Ferro silicon is also used to make silicon, ferrous silicon alloys that don’t rust and can withstand high temperatures, and silicon steel, which is used to make electromotors and transformer cores.

The main benefit of FeSi is that it deoxidizes metals by taking them out of their oxides. But it also helps keep carbon from escaping, which is a big plus. Ferrosilicon is also used to coat electrodes in factories that make silicon, hydrogen, and magnesium.

Quartz sand (SiO2) and coke can be mixed with iron to make steel in a blast furnace or an electric arc furnace. The ferrosilicon is made in both of these furnaces. The liquid comes out of the furnace as a liquid, and then it is left to cool and harden into a sheet.

After this sheet has had time to cool, it is first broken up with the right tools and crushed even more with a crusher. The particle size distribution ranges from dust-sized particles to chunks as big as cm. FeSi is put through a screen to separate it into different sizes so it can be used in other ways.

Production
In the first step of making ferrosilicon, coke and silica (or sand) are mixed. The mixture is then reduced in the presence of an iron source. The most common ways to get iron are mill scale and scrap iron. Ferro silicon is made in blast furnaces lined with acid-fire bricks and has up to 15% silicon. Electric arc furnaces are used if the amount of silicon is higher than what was said before. The most common types of ferrosilicon are those with 15%, 45%, 75%, and 90% silicon. Iron, calcium, and aluminum are used, making up about 2% of the rest of the composition. When there is more silica, it makes it harder to make silicon carbide.



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