The invention discloses a method for recycling
palladium from a silver
electrolyte by using
dimethylglyoxime. The method comprises the following steps: adding
dimethylglyoxime into a
palladium-containing
electrolyte for precipitating
palladium; performing
solid-liquid separation, returning filtrate as an
electrolyte, and eluting filter residue with
nitric acid acidification water to obtain a
dimethylglyoxime palladium crude product; dissolving the dimethylglyoxime palladium crude product with
aqua regia, and then precipitating palladium with
ammonium chloride; eluting an obtained
ammonium chloropalladate precipitate with an
ammonium chloride solution until filtrate is colorless; and adding water, heating, and dissolving; filtering, and cooling filtrate; adding
ammonia water, complexing and dissolving; cooling, filtering, and eluting the filter residue with
ammonia water; adding
hydrochloric acid for acidifying filtrate; filtering to obtain a diammonium dichloropalladite precipitate; and reducing the precipitate by hydrazine
hydrate to obtain palladium
sponge with the grade of 99.99%. Heating and
pH regulation are not required, and only quantitative
precipitation of palladium is required; the selectivity is good; and the precipitated dimethylglyoxime palladium can achieve a very high purity after simple eluting, so that the palladium purifying process is greatly shortened and the palladium recycling rate is improved; the using amount of dimethylglyoxime is low; and except a small amount of
ethanol, other ions are not brought, so that the reuse of the electrolyte is not affected.