METHOD FOR CONTROLLING HYDROGEN DESORPTION-RECOMBINATION STEP IN HDDR PROCESS, METHOD FOR MANUFACTURING RARE EARTH-IRON-BORON-BASED RARE EARTH MAGNETIC POWDER INCLUDING HYDROGEN DESORPTION-RECOMBINATION STEP, AND ACCORDINGLY MANUFACTURED RARE EARTH-IRON-BORON-BASED RARE EARTH MAGNETIC POWDER

摘要

The present invention features a method for controlling a hydrogen desorption-recombination step in a HDDR process in which the hydrogen release rate is controlled such that the time necessary for an endothermic reaction in the hydrogen desorption-recombination step in the hydrogenation-disproportionation-desorption-recombination (HDDR) process exceeds three minutes.