Re: [AMMRL] AMMRL: What to do with old magnets?

Hi Rick,

also because Jonathan Lee (via PM) pointed it out to me, let me be a bit more specific:

- (un)welding but possibly also angle grinding stainless steel can and will produce toxic (chromium) fumes, thus it is advised to do this

a) outside 

b) under forced fume extraction / dispersing fumes away from you and anyone else

c) wearing suitable personal protection equipment (screen, gloves, gas mask)

Also, as Rick correctly observed (and this indeed happened to me the first time I did this…), the mylar foil between the outer stainless shell and the nitrogen dewar will happily ignite when using a plasma cutter… I usually remove the bottom plate and central bores, then rip out the super insulation as much as possible before going at it with the cutter.

Cheers 

Bert

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Am 29.08.2023 um 17:54 schrieb Richard Fitch via groups.io <richard.fitch=indstate.edu@groups.io>:



Thanks Bert,

 

I appreciate the advice.  Do you have trouble igniting the insulation with the plasma cutter or do you disassemble prior to digging in?

 

All the best,

Rick

 

From: main@ammrl.groups.io <main@ammrl.groups.io> On Behalf Of Spin-Doc via groups.io
Sent: Sunday, August 27, 2023 10:22 AM
To: main_at_ammrl.groups.io
Subject: Re: [AMMRL] AMMRL: What to do with old magnets?

 

Hi,

 

I had quite good success using a plasma cutter (available for quite cheap at DIY stores - needs an air compressor as well) to cut out the magnet coil (to use as display item for the original customer) and to separate out the aluminium from stainless and copper parts. However it's a good day's work, so don't expect a lot of money from the process. But it's good to know it will all go to proper metal recycling.

I don't think the coil material is really recyclable though as it's a wild material mix of copper (wire), niobium-titanium (supercon), stainless (overbinder) and aluminium (formers), tin (joints) as well as resin, plastic etc…

I haven't tried cutting it open with an angle grinder and cutter disks after heariing it's not that funny… But that's the better way if you want a "full display" piece by cutting a hole into every layer. People have done amazing jobs at this, adding some LED lighting to show the different dewars 8-)

 

Cheers

Bert

Am 25.08.2023 um 22:09 schrieb Richard Fitch via groups.io <richard.fitch=indstate.edu@groups.io>:

 

Dear Spinlanders,

 

I have been tasked with disposing of the magnet from our old AC-250 system.  I had planned for years to cut it up into a display piece but alas, it has not risen high enough on the priority list to get done and my time has run out.  Rather than send it to the scrapyard, what options are there for handling these guys?  I assume there are useful recoverable metals but is there some form of recycling available?  Any suggestions would be appreciated.

 

All the best,

Rick 

 

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