< Topic >The porous small lump which makes that it was entered with purpose, such as purification and deodorization from the mixed clinical posture of processing object ones it separates recovers easily possible is offered.SolutionsThe porous stone dust end which possesses magnetism and, centrifugal turning treating the blend of the magnetic powder, in the micropore of the porous stone grain of porous stone dust end, it is generated by the fact that it makes the magnetic grain of the magnetic powder enter.< Choice figure >Drawing 7【課題】浄化や脱臭などの目的で投入された、処理対象物との混合状態から容易に分離回収することを可能とする多孔質の小塊を提供する。【解決手段】磁性を有する多孔質石粉末と、磁性粉末の混合物を遠心回転処理して、多孔質石粉末の多孔質石粒子の微細孔の中に、磁性粉末の磁性粒子を入り込ませることで生成されている。【選択図】図7