CONVERSION OF CHLORIDE WASTE INTO OXIDE BY MICROWAVE HEATED OXYGEN PLASMA

In this paper we show the feature of the microwave heated oxygen plasm a torch which we designed and apply it to the conversion method of met al chloride wastes in a pyrochemical reprocessing into oxides. For thi s purpose oxygenation experiments of several typical metal chlorides w ere carried out by using this plasma device and thermodynamic equilibr ium diagrams of each metal chloride and oxygen system were calculated. Consequently, it was found that our oxygen plasma has a possibility t o realize such a oxygenation reaction, the equilibrium diagrams can pr edict the oxygenation characteristics of metal chlorides by oxygen pla sma and the chlorides have conversion characteristics according to the ir oxygenation difficulties. Finally, we classified chlorides into thr ee categories by predictions from the calculated thermodynamic equilib rium diagrams.