“A dream. It’s perfect”: Helium discovery in northern Minnesota may be biggest ever in North America::For a century, the U.S. Government-owned the largest helium reserve in the country, but the biggest exporters now are in Russia, Qatar and Tanzania. With this new discovery, Minnesota could be joining that list.

You are viewing a single thread.
View all comments View context
8 points

Using it for balloons is still a waste because that impure helium could be purified for better uses.

permalink
report
parent
reply
16 points

No, no it could not.

The stuff used in balloons isn’t pure enough to be used for cryogenic purposes, which is what people really want it for.

And before you ask purifying it is really difficult.

permalink
report
parent
reply
8 points

Incorrect. It is not found naturally pure, it must be distilled. Balloon helium vs cryogenic helium is like comparing ice distillation vs vapor distillation of liquor. One is cheaper but both are using up a limited resource.

https://en.m.wikipedia.org/wiki/Fractional_distillation

permalink
report
parent
reply
3 points

yeah it’s distilled off from nitrogen-heavy natural gas, like you could do with nitrogen-heavy gas without helium, or even air. all three processes are done commercially. the issue is that helium bearing natural gas is limited in supply and getting low enough temperature at latter stages of helium refining and liquefying requires bespoke facility. this part is hard

permalink
report
parent
reply
-8 points

“Lookie lookie, I got a wiki!”

-you, probably.

You guys realize this is the same shit anti vaxxers do? Spend five minutes reading a fucking Wikipedia article and suddenly you’re an expert?

Christ I hate you people.

permalink
report
parent
reply
7 points

No helium found on earth ever, was pure enough for cryo. Not even close. All helium is found in low concentrations and spun extracted to concentrate and start to purify it. Then there are additional filter methods to finish concentrating it. Removing the hydrogen is about the hardest because it’s also abundant and small and light.

But helium used in balloons can absolutely be concentrated and purified.

permalink
report
parent
reply
-3 points

hydrogen is the easy one, because you can burn it off on catalytic bed, then pass through bed of 3A MS to trap water. done

separating excess oxygen and nitrogen is easier and there’s already some nitrogen (as much as 50%) in crude helium

permalink
report
parent
reply
-10 points

yes you can, crude helium + air mixture (few %) is used in first stages of cryogenic helium purifying

permalink
report
parent
reply
5 points

Jesus Christ not this guy again…

permalink
report
parent
reply

Technology

!technology@lemmy.world

Create post

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots


Community stats

  • 17K

    Monthly active users

  • 12K

    Posts

  • 543K

    Comments