Silicon metal, or known as metal silicon, it is a product smelted from silica and carbonaceous reducing agent in a submerged arc furnace. The main component silicon content is usually above 98.5% and below 99.99%. The remaining impurities are iron and aluminum. , calcium, etc. Among them, Silicon Metal 553 is a very common model. According to national standards, the impurity content of silicon 553 is as follows: Fe≤0.5%, Al≤0.5%, Ca≤0.3%. There are two types of Silicon metal 553: with oxygen or without oxygen.
Silicon 553 with Oxgyen
Si 553 oxygen refers to si metal that has been in contact with oxygen during the manufacturing process and has reacted with oxygen. Silicon metal manufacturer call this process as oxygen blast or oxygen blowing. The goal of this process is to remove calcium, aluminum and other impurity elements from silicon metal. Silicon 553 that has undergone the oxygen blast process has the following characteristics:
Silicon with oxygen blow generates heat and rapidly generates oxides. After this step, silicon metal 553 has better thermal conductivity and is suitable for some special applications. For example, alloy manufacturing, electronics industry and other fields. It can make the final products such as aluminum alloys have good electrical and thermal conductivity.
Silicon 553 without Oxgyen
In contrast, silicon metal 553 no oxygen refers to metallic silicon that is isolated from oxygen during the manufacturing process and does not react with oxygen. Silicon metal 553 without oxygen blowing has different characteristics:
First, it has high stability. Si 553 no oxygen has high stability in normal air environment and does not react with oxygen.
Secondly, because silicon 553without oxygen blowing, it does not generate compounds such as oxides, so its electrical conductivity is relatively good. Silicon 553withou oxygen is mainly for anti-corrosion materials, capacitors and other fields, and can provide better protective performance.
Finally, regardless of silicon metal 553 with or without oxygen, they are all qualified products. That is to say, both models contain at least 98.5% silicon and other elements like Fe, Al Ca will also be in compliance with the right standard.