The current method of obtaining argon in industry is to distill air, . With a condenser can be the first boiling point of 90.2 K oxygen liquefaction, removal of liquid oxygen, continue to cool can be liquefied boiling point of 87.3 K argon, finally leaving the boiling point of 77.35 K argon. At present, this method of manufacturing argon gas in the world up to 700,000 tons / year.
Other methods:
Additionally, the decay of potassium -40 can also be used to manufacture argon, but the efficiency of this preparation method is not high, because the half-life of potassium -40 is as long as 1.26 × 10 9 years, so it is not commonly used.