The activated alumina ball Activated alumina for medical is a white, spherical porous material; It is non-toxic, odorless, tasteless, insoluble in water, esters, hydrocarbons, alcohols and other organic solvents. It has the advantages of no pulverization in water and alkali, constant soft, high clarity, long service life and strong ability to degrade and regenerate anthraquinone derivatives. It is a special adsorbent for the production of medical by anthraquinone method. In addition to adsorbing the alkali in the working solution, this product has strong regeneration ability for hydrogenated degradation products, which can convert the degradation products increased in the hydrogenation reaction into effective anthraquinone, ensure the stability of the total effective anthraquinone, facilitate the oxidation reaction, reduce the addition of anthraquinone and save the operation cost. At the same time, considering the needs of regeneration, the production of activated alumina balls for medicalensures good mechanical properties, and the activity changes little after regeneration.