Oily sludge treatment method and device

The invention provides an oily sludge treatment method and device. The oily sludge treatment method comprises the following steps of: S1, putting oily sludge, magnesium minerals and washing water into a high-speed stirring and cleaning container, and mixing and stirring; S2, performing centrifugal dewatering on the sludge obtained in the step S1; S3, adding magnesium minerals and purified water into the sludge obtained in the step S2, and mixing well; and S4, performing airing and air-drying treatment. The device used in the oily sludge treatment method comprises a pre-stirring system, a high-speed stirring and cleaning device, a centrifugal dewatering device, a repairing device and an oil collecting device. The pre-stirring system, the high-speed stirring and cleaning device, the centrifugal dewatering device and the repairing device are sequentially connected. The oil outlet end of the high-speed stirring and cleaning device is communicated with the oil collecting device. The problem of long oily sludge sep