Difference between silicon metal oxide and oxygen-free metallic silicon

There are two methods for producing industrial silicon: oxygenated and oxygen-free. The oxygenated method is a method for producing silicon mono crystals or polycrystalline silicon by introducing oxygen into the heating furnace and causing a redox reaction of the raw silicon, while the oxygen-free method is a method where oxygen is not added during silicon production. Process. The difference is that the oxygen addition method speeds up the rate and depth of the redox reaction, helps remove impurities and improves the quality of the silicon ingot. Methods without oxygenation increase the impurity content and can affect the quality and performance of industrial silicon.

Advantages of silicon metal oxide

1. impurity content control: oxygen controls the impurity content of silicon ingots, ensuring stability and consistency of quality.

2. improved temperature uniformity: oxygen flow improves furnace temperature uniformity, shortens production cycles and improves silicon purity and structural integrity.

3. improved quality and performance: oxidation helps to improve the quality and performance of industrial silicon products.

Disadvantages of silicon metal oxide

1. energy and material consumption: the oxidation process requires large amounts of energy and material consumption to remove impurities, increasing production costs.

2. safety risks: the oxidation process has specific safety risks and requires safety precautions and controls.

Advantages of oxygen-free metallic silicon

1. simple and economical: anaerobic processes are simple and easy to control, making them suitable for small production lines and companies with low initial investment.

2. Energy savings: energy costs are reduced as oxygen is not consumed without oxygen supply.

Disadvantages of oxygen-free metallic silicon

1. Increased impurity levels: oxygen-free processes increase impurity levels, which can affect product quality.

2. Lower purity and higher costs: non-oxide products have lower purity and can be more expensive to produce.