1. metallurgical industry in the steelmaking process blown into high-purity oxygen, oxygen and carbon, phosphorus, sulfur, silicon and other reactions, not only to reduce the carbon content of steel, but also to help remove phosphorus, sulfur, silicon and other impurities. In addition, the heat generated in the oxidation process is sufficient to maintain the temperature required for the steelmaking process. Therefore, oxygen blowing not only shortens the smelting time, but also improves the quality of steel. In blast furnace ironmaking, increasing the oxygen concentration in the blast furnace can reduce the coke ratio and increase the output. In non-ferrous metal smelting, using rich oxygen can also shorten the smelting time and improve the output.

2. In chemical industry ammonia production, high purity oxygen is mainly used for oxidation of raw material gas, such as high temperature cracking of heavy oil, gasification of pulverized coal, etc., to strengthen the process and improve the yield of products. Fertilizer.

3. Defense industry liquid oxygen is a good fuel for modern rockets. Supersonic aircraft also need liquid oxygen as an oxidizer. Combustible materials are impregnated with liquid oxygen and have strong explosive properties.

4. Supply breathing: It is used in anoxic, hypoxic or anaerobic environment, such as diving operation, mountaineering, high altitude flight, space navigation, emergency rescue, etc.

5. In addition, high purity oxygen has a wide range of uses in metal cutting and welding.