Effect of microwave radiation on ilmenite flotation

The studies indicate that microwave radiation pretreatment is an effective method to modify ilmenite surface properties and improve ilmenite flotabili ty. After exposure to microwave radiation for a short time, ilmenite recove ry was increased by about 20%. The specific surface area of ilmenite samples underwent a significant chang e with microwave exposure time; also new phases were observed. Microwave exposure speeded up the oxidation of ferrous ions to ferric ions on the ilmenite surface. This resulted in an enhancement of oleate ion adso rption and therefore improved ilmenite flotation behaviour.