It was investigated ror orhe process to prepan 99.999% tcllunum from decopperized anode slrme in copper lefillcly Tcllunum is seleclively enltacled in strang alkahne solutia~b~or n decapperized anode sl~mew hch was composed af mainly lelluriurn and copper and minorly iron, antimony, selenium, arsenic and lead. Musl of irnpurihcs rcmain aulcorner oxides in the residue. Tmnpurities dlssolvxl patially in ihe leach liquor such as capper, lcad a ~ idron are precipitated with Na2S. Tellul-ium of 99.9% purity is deposited on ihe calhode leaving Se and As behind m the solunon. Then, tel1uiiu~no f 99.999% pmty 1s made by i.acuum distillalio~~ w,h ich can he used as a1 electronic materials