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The definition and function of silicon metal with and without oxygen：

Silicon Metal is a silicon material with a purity of up to 99.999% and is widely used in solar photovoltaics, semiconductors, integrated circuits and other fields. In the production process of industrial silicon, there are two process methods: oxygen and no oxygen.Oxygen is to pass oxygen in the heating furnace, and the raw silicon is processed into silicon single crystal or polycrystalline silicon through a redox reaction; oxygen is not to be processed without adding oxygen. The difference between passing oxygen and not passing oxygen is that passing oxygen can increase the speed and depth of the redox reaction, which is beneficial to the removal of impurities and the improvement of the quality of the silicon body.Failure to pass oxygen may lead to an increase in impurity content, affecting the quality and performance of industrial silicon.

Advantages and disadvantages of oxygenation and non-oxygenation：

1. Advantages of oxygenation silicon metal

Oxygen can control the content of impurities in the silicon body and ensure the stability and consistency of the silicon body quality. At the same time, oxygen flow can improve the uniformity of the furnace temperature, shorten the production cycle, improve the purity of the silicon body and the integrity of the crystal structure, thereby improving the quality and performance of industrial silicon.

2. Disadvantages of oxygenation silicon metal

Oxygenation silicon metal requires the removal of impurities through oxidation-reduction reactions, a process that consumes a lot of energy and materials and increases production costs. At the same time, there are certain dangers during the oxygenation process, which require safety protection and handling.

3. Advantages of not passing oxygen silicon metal

The oxygen-free process is simple and easy to control, and is suitable for small production lines or enterprises with low initial investment. At the same time, there is no need to consume oxygen, saving energy costs.

4. Disadvantages of not being able to pass oxygen silicon metal

The process of not passing oxygen can easily lead to the mixing of impurities, thus affecting product quality. At the same time, products without oxygen have low purity and high cost.

In general, both the use of oxygen and non-oxygen in industrial silicon have their advantages and disadvantages. When choosing a processing method, you need to make a choice based on production scale and product quality requirements. But in general, in order to ensure the quality and purity of the silicon body, the oxygen passing process is a more common choice.