Abstract: Used dry cells are sorted into ultra-high power manganese dry cells and high power manganese dry cells including alkaline manganese cells. Line (I) of FIG. 1 includes crushing the ultra-high power manganese dry cells into fragments, sieving the fragments to collect a first fraction of depolarizer mass and a second fraction of metal casings, calcining the first fraction to form manganese and zinc oxides, and processing the oxides into a ferrite having a higher MnO/ZnO ratio. Line (II) of FIG. 1 includes crushing the high power manganese dry cells including alkaline manganese cells into fragments, sieving the fragments to collect a third fraction of depolarizer mass, adding zinc cans from the second fraction to the third fraction, calcining the mixture to form manganese and zinc oxides, and processing the oxides into another ferrite having a lower MnO/ZnO ratio.

Abstract: Manganese dry cells sorted out of used-up dry cells are crushed and sieved to obtain a mixture composed predominantly of anodic substances, which is in turn used for ferrite production. The invention is preferable for a saving of resources and preservation of the environment, and enables ferrites on a practical-enough level to be obtained.