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A nice gift


Nessalco

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I received a very nice gift last night - about 30 pounds of yttrium stabilized zirconium grinding media. This is 'junk' from a local company that produces calcium carbonate for the food and drug industries, and buy the media as 1" balls, by the multiple ton lots. This is worn down to between 1/4" and 5/8", but still completely serviceable for pyro needs. I'll be making a new (big) mill to grind charcoal using this media.

 

I looked at the prices for this stuff online, and nearly fell off my chair.

 

Kevin

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Nice find. Most people who have used it love it, but like you said the price tag makes for a heck of a sticker shock. If that company has any more "junk" to get rid of, let us know. :)

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Nice score, I bet it'd even hold up well for MgAl. It sounds like its worth building a new mill for.
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Never occurred to me that this media might grind MgAl. I want to experiment with some very fine MgAl in TPA flash, and have some coarse stuff I'll probably never use. Seems like a good experiment.

 

I've read that when milling MgAl you need to open the mill jars periodically in order to avoid problems with heat generation due to oxidation. How often should I crack them? Every hour? Every six?

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August could tell you better but I don't think it is near the concern as plain AL. The possibility still exists so once every hour is standard for AL, I'd do the same.
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I can run twenty four hours continuous without much heat generation. I also know my drums breathe a bit.

 

Received enough ceramic media for four drums that used to be used for grinding up egg shells. Retired it from MgAl grinding due to chipping.

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