New sustainable processes with microwave application performed by the author’s research group are reviewed in the present study. Microwave treatments were applied to immobilization of transuranic incinerator ash, Fe and P recovery from steelmaking slags and Mg gas production from waste MgO-C refractory materials. Although some waste materials could be easily heated by 2.45GHz microwave irradiation, the effect of additives was considerably large. Furthermore, the addition of graphite also caused carbothermic reduction of FetO, P_2O_5 and MgO, which enabled the recovery of Fe, P and Mg from the waste slags and refractories generated in the steelmaking processes.
展开▼
