In this work, we report test results for direct melting of non-combustible wastes by using a 100 kW class transferred type plasma torch. For this purpose, non-combustible wastes consisting of metals and sands were prepared, weighed and melted by a transferred arc in a ceramic crucible with inner diameter of 150 mm. Test results reveal that 75wt% M6 iron bolts mixed with 25wt% sands were completely melted down within 140 seconds at the plasma power level of 83.8 kW, producing melting speed of 100 kg/hr and volume reduction rate of 62.8%. In addition, for simulated wastes consisting of 77.3wt% metal chips and 22.7wt% sands, the volume reduction rate high than 88% was achieved at 50 kW plasma power. These results indicate that non-combustible wastes can be treated efficiently when directly melting them by using transferred type plasma torch.

• Darian Figuera-Michal(JeonBuk National University (JBNU))
• Dong-Hyun Lee(JeonBuk National University (JBNU))
• Nam-Ki Lee(JeonBuk National University (JBNU))
• Shi-Young Yang(JeonBuk National University (JBNU))
• Jun-Ho Seo(JeonBuk National University (JBNU)) Corresponding author