在使用铱坩埚拉制激光晶体时,铱大量蒸发,其中大部分附着在铱坩埚周围作为保温材料的二氧化锆砂上。根据华北光电所近几年的统计,每年每个铱坩埚失重约200—300克,全所每年仅铱的损耗达几十万元。该项研究就是将蒸发在二氧化锆砂上的铱加以回收利用。 由于铱和二氧化锆(经高温处哩过的)化学稳定性极好,因此二者的分离存在一定困 When laser crystals were drawn using an iridium crucible, a large amount of iridium evaporated, most of which adhered to the zirconium dioxide sand as an insulating material around the iridium crucible. According to the statistics of North China Photovoltaic Institute in recent years, each weight loss of each iridium crucible is about 200-300 grams per year, and the annual loss of iridium only amounts to several hundred thousand yuan. The study was to recycle iridium vaporized on the zirconium dioxide sand. Due to the excellent chemical stability of iridium and zirconium dioxide at high temperatures, there is some difficulty in the separation of the two