Gold recovery system and recovery method thereof from gold separation solution

A gold recovery system from a gold separation solution, comprising a gold selective extraction system, a reduction system, a washing system and an evaporation system;

• wherein the gold selective extraction system comprises a gold separation solution mixer, a gold separation solution metering tank, a gold-carrying solution storage tank, a gold-carrying solution metering tank, an extractant storage tank, an extractant metering tank, a first extraction reactor, a second extraction reactor, a gold-rich solution pump, a secondary gold separation solution pump, a gold-rich solution storage tank, a secondary gold separation solution mixer, a gold-carrying solution pump, a gold-barren solution mixer and a gold-barren solution pump;
• the gold separation solution mixer is connected to the gold separation solution metering tank and the first extraction reactor in sequence, the gold-carrying solution storage tank is connected to the gold-carrying solution metering tank and the first extraction reactor in sequence, the extractant storage tank is connected to the extractant metering tank and the first extraction reactor in sequence, and the first extraction reactor is connected to the gold-rich solution pump, the gold-rich solution storage tank, and the reduction system in sequence;
• and the extractant storage tank is connected to the extractant metering tank and the second extraction reactor in sequence, the first extraction reactor is connected to the secondary gold separation solution pump, the secondary gold separation solution mixer, and the second extraction reactor in sequence, the second extraction reactor is connected to the gold-carrying solution pump and the gold-carrying solution storage tank in sequence, and the second extraction reactor is connected to the gold-barren solution pump, the gold-barren solution mixer, and the evaporation system in sequence;
• the reduction system comprises a reduction reactor, a reduction agent preparation tank, a post-reduction solution storage tank, an oil phase pump and a liquid phase pump;
• and the gold-rich solution storage tank is connected to the reduction reactor and the washing system in sequence, the reduction agent preparation tank is connected to the reduction reactor, the reduction reactor is connected to the oil phase pump and the extractant storage tank in sequence, and the reduction reactor is connected to the liquid phase pump, the post-reduction solution storage tank and the evaporation system in sequence;
• the washing system comprises a washing barrel, a hydrochloric acid washing tank, a nitric acid washing tank, an ammonia washing tank and a pure water washing tank;
• and the reduction reactor is connected to the washing barrel, and the hydrochloric acid washing tank, the nitric acid washing tank, the ammonia washing tank and the pure water washing tank are respectively connected to the washing barrel;
• and
• the evaporation system comprises an evaporator, a condenser, a circulation tank, a circulation pump, an acid solution tank, a cold water barrel and a hot water barrel;
• and the gold-barren solution mixer and the post-reduction solution storage tank are respectively connected to the circulation tank, the circulation pump, the evaporator, the condenser and the acid solution tank in sequence, and the cold water barrel and the hot water barrel are respectively connected to the condenser.