So after a long time, I finally get the suitable drum at my workplace (discarded - rusty inside, but perfect for me) and take it home with me
Old Merck HPLC solvent drum. Not stainless steel, but definitely not just ordinary weak iron. Cutting it with scissors was bit painful. I forgot about existence of angle grinder
I planned to use larger drum (this is 25 L), double insulation from mineral wool (rated for 1400°C, 2cm thickness). This bring the inner diameter to acceptable 23 cm. On the top, lid is also insulated and insulation fixed on place with kanthal wire (to resist flame on inside). On the top, I also made an afterburner stage, from smaller can. This has also one layer of insulation to retain the heat necessary for complete burning of the stuff. Small hole is also punched on the side for later installation of second small burner with pipe from compressor, to supply oxygen for complete combustion.
I plan to test it soon, with 0,7 kg lot of DIP ICs (old stuff), and see how it will go in terms of completeness of combustion and smoke. I need to somewhat figure out good air supply. But I think with testing, this will work as intended. When I purchase better burner and install it to the oposite side of the drum, together with present one, should be enough also for smelting. But now on full heat, I assume from the colour that it was max. 900°C inside.
Old Merck HPLC solvent drum. Not stainless steel, but definitely not just ordinary weak iron. Cutting it with scissors was bit painful. I forgot about existence of angle grinder
I planned to use larger drum (this is 25 L), double insulation from mineral wool (rated for 1400°C, 2cm thickness). This bring the inner diameter to acceptable 23 cm. On the top, lid is also insulated and insulation fixed on place with kanthal wire (to resist flame on inside). On the top, I also made an afterburner stage, from smaller can. This has also one layer of insulation to retain the heat necessary for complete burning of the stuff. Small hole is also punched on the side for later installation of second small burner with pipe from compressor, to supply oxygen for complete combustion.
I plan to test it soon, with 0,7 kg lot of DIP ICs (old stuff), and see how it will go in terms of completeness of combustion and smoke. I need to somewhat figure out good air supply. But I think with testing, this will work as intended. When I purchase better burner and install it to the oposite side of the drum, together with present one, should be enough also for smelting. But now on full heat, I assume from the colour that it was max. 900°C inside.