A kind of metallic cobalt microsphere

The present invention relates to a kind of metallic cobalt microsphere, preparation process is as follows: (1) is prepared cobalt source mother solution by cobalt nitrate and EDTA, then adds ammonia and water, and the pH value making solution is 12.4；Then above-mentioned solution is transferred in reactor, add high purity metal cobalt plate as substrate, hydro-thermal reaction at 90 120 DEG C, then rinsing, drying；(2) being sent directly in Muffle furnace together with metallic cobalt plate by above-mentioned micron-size spherical cobalt hydroxide, programming rate controls at 1 10 DEG C per minute, and final temperature controls at 250 350 DEG C, temperature retention time 35 hours；(3) the micron-size spherical Cobalto-cobaltic oxide that will be cooled to about 200 DEG C is sent directly into reduction furnace together with metallic cobalt plate, air pressure controls at 0.24 0.35Mpa, programming rate controls at 10 20 DEG C per minute, and final temperature controls at 600 800 DEG C, temperature retention time 23 hours；(4) after using ion blower elimination to cool down, the electrostatic of metallic cobalt microsphere, then carries out Multi-stage airflow selecting crude drugs with winnower and eliminates the bulky grain of more than 20 μm.