Method for preparing ferroferric oxide and nepheline from neodymium iron boron waste

The invention relates to a method for preparing ferroferric oxide and nepheline by using neodymium iron boron waste. The method comprises the following steps: S1, premixing; the method comprises the following steps: mixing neodymium iron boron waste containing 0.31-0.76 wt% of rare earth oxide with biomass charcoal according to a certain ratio, and carrying out ball milling to obtain a premix; step S2, reduction roasting; s2, putting the premix obtained in the step S1 into a furnace kiln, carrying out anaerobic roasting for 1-3 hours under the condition of 700-900 DEG C, and carrying out reduction roasting to obtain magnetic solid powder; s3, leaching after magnetic separation; s2, the solid powder obtained in the step S2 is placed in ethyl alcohol for magnetic separation, magnetic black powder and solid powder left after magnetic separation are collected respectively, continuous magnetic separation N is larger than or equal to 2 times, the obtained magnetic black powder is subjected to water immersion washin