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  • WEEE Ben
    commented on 's reply
    Yep, if you go a few posts back we speak about him and I put up a couple video's of the milling, and his refining video a few weeks ago in another thread

  • Bren gun21
    replied
    Hi all, I was looking through YouTube during the week and this bloke in NZ had a video on refining ic chips without incinerating he had a ball mill made out of a 9kg gas cylinder, he shows you how he built it and what he done to make it work better, similar to what Geo done with the cement mixer but he used a 60mm ball bearing to do the job and also he had it going for at least a couple of days but he did crush them down to fine powder
    He also goes through all the procedures including recovering the gold and refining it's a long one at movie lengths of around 90 minutes but he explains it pretty well

    If your interested that is

    https://www.youtube.com/watch?v=MgmBez-kE7g

    Leave a comment:


  • Bohdan
    commented on 's reply
    Just don't do this with PVC coated wire.

    The gasses produced can have long term health effects

    just my $1 worth

  • Bohdan
    commented on 's reply
    Just a side note

    As Geo said "putting them on a cookie sheet or loaf pan" means a thin layer of chips.
    As the resin is evaporated/expelled you are left with glass/silicone material which is a darn good heat shield; think ceramic tiles on space shuttle; and this stops the chips not directly being heated, not getting the full amount of heat and when you are incinerating you get pyrolysis in the inner most layer of chips and wind up with a hard cake of black carbon/silicone and not the nice white/gray ash you are looking for.

    Ones first reaction is to break it up, which now mixes the ash with the carbonaceous mess and re-heat. I find that if you are careful, you can scrape off the top layer of ash to one side and then re-heat.

    just my 1c worth

  • WEEE Ben
    commented on 's reply
    yeah you might be right, think i'll just keep accumulating ic chips until I move bush and have enough to make a difference, still got a few years to accumulate.

  • Geo
    commented on 's reply
    It will work but it will not hold many at a time. You may have better luck just putting them on a cookie sheet or loaf pan and putting them on a BBQ with charcoal. I have done it many times. In my opinion, you would be putting wear and tear on a good piece of equipment and there's no way you can get out of it what your putting into it as far as money. A few bucks for a bag of self lighting charcoal will do a few kg of chips at one time.

  • WEEE Ben
    replied
    ok, so i'll be incinerating then.

    Here's the type of furnace i'm getting, although it's the better version, this one shown is a cheaper type
    so I was thinking of just dropping ic chips into it and let them burn off

    Leave a comment:


  • Geo
    commented on 's reply
    It will incinerate chips. Pyrolysis and incineration is two completely different things. Incineration is heating something to the point it combust with the oxygen in the air. Pyrolysis is heating something to the point of combustion in the absence of oxygen. If you put the chips in a furnace, they will combust. Pyrolysis is completed in a sealed container with a controlled outlet. Usually a metal container like a metal bucket or small metal drum. A metal pipe is fastened into the lid so that the pipe is just short of the bottom. Your material is placed in the container with a small amount of water and the lid put in place with the pipe pointing up. The container is then turned bottom up and top down. Now the pipe is pointing down. It sits on a rack, in an oven or kiln and heated. Normally wood, coal or waste oil is used to heat the container. As the organics (plastic, rubber, resin) heat and begin "gassing off", the combustible gas is vented down into the fire. If you are using propane, natural gas, fuel oil, waste oil or any of the like, you can turn it down or off and the off gasses will fuel the heat needed. It will need to be turned back on near the end to keep the heat up so all the material has been baked all the way through. This also works with coated copper wire. If the process if followed and completed correctly, the wire is left to cool and then shaken and the coating falls off and the wire isn't even scorched.

  • WEEE Ben
    commented on 's reply
    ok, but will a furnace work to turn ic chips into dust?

  • Geo
    replied
    Pyrolysis.

    https://en.wikipedia.org/wiki/Pyrolysis

    Leave a comment:


  • WEEE Ben
    replied
    I'm thinking of getting a furnace and was wondering since it can get to 1150c would that be hot enough for ic chip pyrolysis to occur?
    the chips would be dropped into a graphite crucible and brought up to temperature, what heat would be required for this? and how long could I expect to leave at temp'?

    Leave a comment:


  • Pav
    replied
    Baking it sounds interesting. So I am assuming a lot less heat over a longer period of time? Any youtube vids on the process that you know of? Would love to see it in action.

    I bit the bullet and decided to make my own refractory. I live in a townhouse complex so no coal or open flame options for me so looking at the DIY refractories, they dont look that hard. Just trying to find the last lot of materials and I am good to go.

    Also managed to get an old LPG cylinder which I am thinking of making a ball mill out of to totally avoid incineration. That a project that is going to take a long time and not a priority atm. I have seen twice now the cement mixer ball mill and they look good too.

    Leave a comment:

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