Treatment method and treatment device for copper smelting magnetic separation tailings

The invention provides a copper smelting magnetic separation tailing treatment method and device, and the method comprises the following steps: S1, crushing magnetic separation tailings, fully mixing the crushed magnetic separation tailings with dilute sulphuric acid to realize acid leaching reaction to obtain an acid leaching solution, and carrying out solid-liquid separation on the acid leaching solution to obtain a leachate; s2, a dispersing agent is added into the lixivium to achieve a precipitation reaction, solid-liquid separation is achieved after precipitation is conducted for a preset time, and silicon recovery is achieved; s3, iron powder is added into the leachate subjected to the precipitation reaction to achieve a replacement reaction, solid-liquid separation is achieved after replacement is conducted for a preset time, and recovery of metal copper is achieved; and S4, a vulcanizing agent is added into the leachate subjected to the replacement reaction to achieve vulcanization reaction, solid-liq