The Shop > Metal Stuff
Melting large amount of aluminium
NeoTech:
So after much experimentation.. Oil burner from a siphon nozzle, ala, dem americans patriotsupply thingymajigs. .. well it burns.. but is a ******* hassle to get it stable, and its sensitive for amount of air, sidewind, air pressure in furnace.. so when it goes out is a ******* hassle to get it going..
And then for oven i took a oildrum, cut slots in the bottom and just poked a hole into it and thought i could let it dripdown in the barrel below.
Well it turns out oil barrels are really thin.. And conduct heat reaaally well. So getting it over 300 C was nearly impossible.. So i was left with 2 engine heads and 2 transmissions casings fused together into crud.. i think i will go back to my old method of sledgehammer and melting 1l at a time..
A 0.75gps nozzle for waste oil, dont come nearly close a propane torch in this application. For getting em to work it seems a really well isolated and very very small container is needed.. Making it not so usefull for scrapping large amounts in a single run.
glumpy:
I have got into a few arguments with the people whom are spray/ Nozzle burner disciples. Your experience is repeated many times. I can't for the life of me understand why people pay so much for these things then have loads of trouble with them and unlike yourself, stick with them and champion them as the best solution for oil burning? I would want the things to switch on and off like a lightbulb for the cost, complexity and amount of support gear the things need.
I recently Dug out an old burner from about 5+ years ago from my mates shed. It's dead simple and cheap to build and works great.
You can see a vid of it here.
As can be seen it's just made from standard compression fittings and a 1/4 T piece. I have shot a detailed vid of how the thing is put together which will come out in a couple of days. The thing lights almost instantly with no preheating or buggering around on straight veg oil and is very controllable and stable.
I have no problems melting ally in oil drums, I did the mini melter here in a 60L drum and another one here, in a full size drum. These were with a drip burner as I can still get a lot more heat out of those than with anything else and more than I could need for practical purposes.
A .75 gph nozzle is less than 30 Kw. I have seen more powerful Cigarette lighters! I can push 200Kw out of my drip burners without thinking. Haven't measured the Spray burner yet but from guesstimation, I don't see 100Kw+n being a problem.
jcs0001:
Ausdier - that is one pile of aluminium. Seems you could make a lot of machinery with that.
Glumpy - great videos. Maybe I missed it but are you using waste vegetable oil or waste motor oil. My brother had a big shop and built a waste oil burner to heat it with motor oil - quite amazing the heat he got out of it. It was just gravity feed with no blower that I can recall as he wasn't wanting to melt anything.
John.
glumpy:
Normally I use Veg oil.
I have run my vehicle on it for 11 years so there is always plenty around. I used to just put the crappy stuff I didn't want to put through my engine before but now doing the vids that's not nearly enough.
When I do an oil change on my vehicles, I will throw that in with the veg oil and put through the burner. My father has a wrecking yard and is getting a bit over loaded on it so I'll take some drums up and get a heap to bring back. Will get rid of it for him and save my veg for the truck.
I prefer veg oil because the stuff smells so much better, is far easier to clean up in the event of a spill and doesn't stain and leave a stink in your clothes like WMO does. There is 10% more heat energy for a given volume of Engine oil over veg but when you are pumping out a couple of hundred KW or more, it's not like you are wishing you had more heat. IF you do, just turn up the fuel a bit and you are there anyway. :0)
I did a passive shed heater years ago but I somehow never got to film it and the thing got pulled apart for more dramatic stupidity. I'll make another one soon in time to keep you guys up north warm for your upcoming winter.
NeoTech:
Glumpy, i think i have messaged you on youtube regarding the same problems. And i can only agree with you, the siphon nozzles are hyped, and badly suited for the application of heating metal to melting temperatures. They are good at making controlled heat for heaters and such. Well its cuz what they are meant to be used for. The biggest restriction i have is the nozzle it self, and its what is sensitive to changes as well.
The distribution block for the siphon nozzle is a good piece of kit, simple to setup and use. But the nozzle.. well i have thrown my so far i could. And started to fiddle with making my own nozzles instead. All you really need is a conical shaped hole in the proper size, and a feed tube inside for the fuel so you seperate the air and fuel until the very end. But well one could make that distribution block by myself.. now when i know how it works.. or a t fitting with a couple of tubes and compression fittings.. its really a easy piece of kit.
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