Preparing method of high-density palladium powder

The invention relates to a preparing method of high-density palladium powder, and belongs to the technical field of metal materials. After noble metal palladium is subjected to dissolution, nitrate removing and ammoniation, a small amount of low-density palladium powder is introduced into a solution to be subjected to reduction to serve as a seed crystal, through intermittent type dropwise addingof a reducing agent, the dropwise adding time and the intermittent waiting time are strictly controlled, and the high-density palladium powder which is high in apparent density, small in grain size, uniform and tight is prepared. The apparent density of the palladium powder is improved, the use losses of the palladium powder can be reduced, in addition, the initial chemical purification stage is achieved, and the high-density palladium powder can be prepared. 本发明涉及一种高密度钯粉的制备方法，属于金属材料技术领域。其在贵金属钯溶解，赶硝、氨化后，在待还原溶液中引入少量低密度钯粉作为晶种，然后通过间歇式的滴加还原剂，严格控制滴加时间与间歇等待时间，从而制备出一种松装密度高、粒径小、均匀紧致的高密度钯粉。本发明提高了钯粉的松装密度，减低了钯粉使用损耗，此外也实现从最初的化学提纯