The invention relates to a method for extracting gold from
thiosulfate adopting ethanediamine as an additive. The method comprises the following steps that: the ethanediamineas is adopted as ligand and forms ethanediamine
copper (II) complex
ion with
copper (II)
ion, the formed ethanediamine
copper (II) complex
ion is used as the additive, and the
thiosulfate is used as a leaching agent and is used for extracting the gold from ore pulp; and calculated by water amount, the adding amount of the
thiosulfate is 0.03-3mol / dm<3>, the adding amount of the ethanediamine is 0.0015-0.09mol / dm<3>, and the adding amount of copper (II) ion is 0.0015-0.03mol / dm<3>. The
leachate is used for extracting the gold from the ore, the
leaching rate of the gold is high, the technique operation is simple, the control is easy, the consumption amount of the thiosulfate is extremely low, and the ingredients of the gold
leachate are simple and are beneficial to
recovery of the gold therein. The method has wide application range, has good leaching effect when the pH is between 10 and 12, also has fast leaching speed of gold ores which contain copper, carbon and the like and are difficult to treat, can maintain quite high
gold leaching rate, and the whole gold extracting process does not use toxic substances of
sodium cyanide and the like, also does not
discharge toxic waste, and is environment-friendly.