Method of stripping cyanide and valuable metal on resin with ultrasonic
A valuable metal and cyanide technology, applied in the direction of improving process efficiency, can solve the problems of no gold ore cyanide solution, difficult desorption, poor effect, etc., to improve comprehensive recovery rate, improve desorption efficiency, and speed up transmission The effect of mass velocity
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[0021] Raw materials: gold extraction tail liquid from a gold smelter, its main components are: total cyanide 134.2mg / L, zinc 60.3mg / L, copper 630.2mg / L, gold 0.1mg / L, silver 0.23mg / L. Under normal temperature conditions, the volume ratio of resin to solution is: 1 / 15. After adsorption, the resin adsorption rate is 95.3% of total cyanide, 99.2% of zinc, 99.1% of copper, 95.3% of iron, and 99.8% of precious metal gold and silver. The loaded resin is desorbed step by step at room temperature in the desorption reactor, and the power used in the process is 40KW / dm 3 , Ultrasonic frequency is 10KHz for process strengthening. First use 2.5% sulfuric acid solution to desorb cyanide and zinc. The volume ratio of resin to solution is 1 / 3. After absorption by 10% sodium hydroxide solution, a sodium cyanide solution of about 10g / L can be obtained, which can be returned to the leaching system. Get a zinc sulfate solution of about 300mg / L, which can be obtained by distillation after multi...
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