Separation of ultrafine particles of alumina and zircon by liquid-liquid extraction using kerosene as the organic phase and sodium dodecylsulfate (SDS) as the surfactant collector for abrasive manufacturing waste recycling

► We separate ultrafine particles of alumina and zircon by liquid-liquid extraction method for abrasive manufacturing waste recycling. ► Kerosene is used as the organic phase and sodium dodecylsulfate is used as the surfactant collector. ► The two kinds of particles are separated by extracting alumina to the kerosene phase and leaving zircon in the water phase. ► The optimal extraction condition is obtained when 1.25 kg/ton SDS is added around pH 9.5.