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powdered Magnetite (Fe3O4

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  • 22-06-2005 12:41pm
    #1
    synchro
    Closed Accounts Posts: 478 ✭✭


    I'm looking for a source of powdered Magnetite (Fe3O4), about 25kg
    needed.

    Thanks


Comments

  • Options
    #2
    DrIndy
    Registered Users Posts: 3,461 ✭✭✭DrIndy


    Jaysus - what do you intend to do with that much magnetised powder may I ask?

    My curiosity is piqued.

    BTW - Engineering Forum or Wanted may be a good source


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    #3
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,695 Mod ✭✭✭✭Capt'n Midnight


    And there was me thinking it was a post about magnetic bacteria.

    http://en.wikipedia.org/wiki/Magnetite


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    #4
    simu
    Closed Accounts Posts: 10,730 ✭✭✭✭simu


    Moved to Physics/Chemistry


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    #5
    Number6
    Closed Accounts Posts: 637 ✭✭✭Number6


    Magnetite is also called rust.

    If you're gonna do what I think you're doing - Thermite reaction - ya better run like the clappers away from the device, as it'll burn through you easily


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    #6
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,695 Mod ✭✭✭✭Capt'n Midnight


    Number6 wrote:
    Magnetite is also called rust.
    http://news.nationalgeographic.com/news/2004/04/0412_040412_pulsegeobacter_2.html
    The mud-dwelling microbes, which Lovley later named Geobacter metallreducens, obtained their energy by transferring electrons onto the rust. In the process, they turned the rust into magnetite.

    Magnetite is the source of most of the magnetic material deposited on Earth some two billion years ago.
    Interesting because at one stage most of the iron deposits were dissolved in the sea and percipitated out when oxygen was released by the early photosynthesisers, which is why oxygen levels took so long to rise. And that's why the sea is blue today. For most of the history of this planet it's been brown.


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    #7
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,695 Mod ✭✭✭✭Capt'n Midnight


    It's not the preferred Iron Oxide for thermite but usable.

    excluding "magnetic energy" :rolleyes: other uses
    http://www.1stchineseherbs.com/magnetite_powdered.html Herbal remedy
    http://www.denville.net/lisiexper.html - Pigeon food :D
    http://www.irc.nl/page/2771 - sewege treatment !
    http://kier.3dfrontier.com/forums/archive/index.php/t-29564.html - how to make "authentic" crop circles
    http://www.namikawa-ltd.co.jp/cgi-bin/item_e.cgi?cate=11&no=8 - polishing swords.

    My curiousity is definitely piqued.


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    #8
    python253
    Registered Users Posts: 1 ✭python253


    If you ever take a magnet to the beach you will score a ton of magnetite for free. It may take a few runs in cleaning out sand and glass (non-magnetic materials), but the result is 100% natural and alot of fun to play with. My son and I just went to the state park and collected some.


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    #9
    SOL
    Registered Users Posts: 1,155 ✭✭✭SOL


    http://catalog.rpmsupplies.com/index.php?route=product/product&filter_name=oxide&product_id=773

    These guys do it - they are an art suppliers.

    What do you want it for?

    Also, python, do you think synthetic stuff is made of magic? When you go to a beach and harverst 5lb of material from it you are very much not leaving it as you found it. It is that unthinking attitude that leads to the destruction of beautiful beaches and other scenic spots. Think about what you do before you do it, and think about what would happen if everyone else behaved as you did...


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    #10
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 90,695 Mod ✭✭✭✭Capt'n Midnight


    python253 wrote: »
    If you ever take a magnet to the beach you will score a ton of magnetite for free. It may take a few runs in cleaning out sand and glass (non-magnetic materials), but the result is 100% natural and alot of fun to play with. My son and I just went to the state park and collected some.
    Oddly enough you could do the same thing on the moon.

    Back here on terra firma, I suspect that it would depend on the beach as sand isn't all the same.
    SOL wrote: »
    [Also, python, do you think synthetic stuff is made of magic? When you go to a beach and harverst 5lb of material from it you are very much not leaving it as you found it
    TBH if someone's removing glass and trash from a beach and only removing a small amount of material for personal use then that's good. Removing large amounts of material or doing it commercially isn't good.

    Sand is a finite resource, IIRC a lot of the same we have was generated during the ice age. In Hawaii they imported sand from Oz to make beaches.


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