[TheForge] reclaiming copper and burn-out oven

[Aaron Williams]

Hello Terry,


Is this copper reclamation for further personal use or for recycling 
purposes?  The reason I ask is because I work for a local scrap yard. and if 
we get in any burnt copper it pays just as much as electric motors, a penny 
a pound.  Sound like a lot of work and money spent for very little profit if 
that is what you are looking for.

Aaron Williams
Pueblo, CO.


----- Original Message ----- 
From: "terry l. ridder" <terrylr at blauedonau.com>
To: <theforge at mailman.qth.net>
Sent: Friday, September 08, 2006 10:40 PM
Subject: [TheForge] reclaiming copper and burn-out oven


> hello;
>
> this relates to my reclaiming copper. i have several large electric motors
> that i need to disassemble and heat the motor core to 755 degs fahrenheit
> and hold there for 12 hours.
>
> basically, i need to build a temporary burn-out furnace.
> i have found various primative plans on the internet.
>
> using resources in have on hand my plans are as follows:
>
> using the white porcelain frame from an sears kenmore propane dryer
> for the outer shell i seal the inside with cold roofing tar.
> the vapour barrier will be roofing felt paper.
> use several battens of 23 inches wide ceiling fibreglass
> insulation, to form a layer of 5 to 6 inches.
> add a 1 to 2 inch layer of 8 lb density kaowool.
> apply a coat of itc-100 to the kaowool to provide some stiffness.
>
> the inner steel shell will be the original dryer drum held stationary.
>
> the goal is create a near airtight shell for the burn out oven.
>
> the oven burner will be a small reil type propane burner. just want to 
> heat
> the oven not forge or melt anything.
>
> the afterburner i was looking at using a monster burner made from an
> asymetrical pipe reducer and a short mig tip. the input to monster burner
> would be the oven exhaust mixed with additional air to allow for near
> complete combustion of hydrocarbons. the temperature in the afterburner
> would need to be held close to 1500 degrees fahrenheit.
>
> the purpose of the burn-out oven is to turn the varnish and insulating
> materials in the motors to ash and anneal the copper windings to allow
> for easy removal.
>
> what i could use help with is controlling the temperature.
> while i would prefer a non-electrical solution i am open
> to electrical solutions.
>
> forgive any errors in the above. today, 8 sept 2006, i had the 18 
> remaining
> teeth removed. i am taking more pain killers at the moment. so i am 
> official
> toothless.
>
> thank you
>
> -- 
> terry l. ridder ><>
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  blacksmithblacksmith at hotmail.com
> password:  anvil
> ___________
>
>
>