Equipment for extracting white carbon black and rare earth water purifying agent from waste rare earth polishing powder

The utility model discloses equipment for extracting white carbon black and a rare earth water purifying agent from waste rare earth polishing powder. The device comprises a cyclone centrifugal unit,a low-acid leaching tank, a high-acid leaching tank, a filter press, a spray dryer and a jet mill, a discharge hole of the cyclone centrifugal unit is communicated with the low-acid leaching tank through a first conveying pipe; a slag opening of the low-acid leaching tank is communicated with the high-acid leaching tank through a second conveying pipe; the high-acid leaching tank is communicated with a delivery pump A, one end of the delivery pump A is communicated with a filter press through a third delivery pipe, the filter press is communicated with a feed port of the spray dryer, and a discharge port of the spray dryer is communicated with an airflow mill through a delivery pump B; the device is reasonable in structural design and convenient to use, can be used for efficiently and quickly preparing silicon oxi