The EnvIRONment process has been developed to treat steel works dust and organic wastes simultaneously. A pelletised feed is fed into a special DC electric furnace, the pellets becoming immersed in a molten slag above a carbon saturated bath. The iron oxide in the pellets is reduced and carburised whilst the organics are broken down to carbon monoxide, carbon dioxide, hydrogen and water vapour. Volatile metals are vapourised and collected in the baghouse. Over two years of trials in a 100 kg DC electric arc furnace has brought the process to the stage where it is ready for commercialisation.
Proceedings of 'Adding value to our resources, our future', the 1995 AusIMM Annual Conference, Newcastle, New South Wales, Australia, 23-26 March 1995