What are the equipment to make argon ah, how the process requirements, the equipment price is about how much?

Argon because of its small content in the air, the production of argon are in the existing large-scale air separation equipment (the main product is oxygen, nitrogen), additional collection of products. The air separation equipment one-time investment is huge, investment can easily be several million to hundreds of millions of dollars, cost recovery cycle is long. If the amount is large or want to operate nitrogen, you can invest in a corresponding liquid argon storage tanks and vaporization charging equipment, the investment can be controlled within a million is also a viable option, liquid argon is to choose from a large air separation plant wholesale.