Leaching method of high nickel-copper alloy vulcanization mixture

The invention discloses a leaching method of a high nickel-copper alloy vulcanization mixture, which comprises the following steps: controlling the concentration of sulfuric acid in a pre-leaching solution to be 0.6-1.2 mol/L, controlling the concentration of copper ions to be 0.08-0.22 mol/L, controlling the liquid-solid ratio of a leaching system to be 6: 1-15: 1, accurately regulating and controlling the ratio of various substances, and controlling the concentration of the copper ions in the pre-leaching solution to be 0.6-1.2 mol/L, the concentration of the copper ions to be 0.08-0.22 mol/L and the liquid-solid ratio to be 6: 1-15: 1. And hydrogen and sulfide can be prevented from being generated when the pre-leaching liquid reacts with the high-nickel-copper alloy vulcanization mixture, so that the reaction is safer. According to the method, the prepared pre-leaching liquid and the high-nickel-copper alloy vulcanization mixture are directly added into the leaching device to be subjected to the leaching r