Non-volatile method for extracting zinc, iron and indium from solution of zinc, iron and indium
A technology of solution and iron indium, which is applied in the field of extracting indium, can solve the problems of low recovery rate, high processing cost, and high processing cost, and achieve the effect of eliminating volatilization treatment, simplifying process steps, and reducing production cost
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[0015] Example one:
[0016] A method for extracting zinc, iron, and indium from zinc, iron and indium solution without volatilization:
[0017] Take 500ml of 1# low-acid leaching supernatant containing zinc, iron, and indium from a hydro-zinc smelter (the solution contains 120g / L zinc, 18.92g / L iron, and 149.09mg / L indium), and the solution at room temperature Warm up to 90℃, gradually add 20g of secondary zinc oxide powder containing about 50% zinc. During the separation of indium and zinc, the pH value of the zinc, iron and indium solution is controlled at 4.5. After stirring and reacting for 2 hours, liquid-solid separation is carried out and the indium precipitate is obtained by filtration. The indium precipitation rate is 97.26% and the zinc in the indium precipitation slag contains 12.6%. The zinc-containing liquid is immersed in the middle or after the purification and impurity removal treatment is sent to the electrowinning zinc; the indium precipitation slag is added to 1...
Example Embodiment
[0018] Embodiment two:
[0019] Take 500ml of 2# low-acid leaching supernatant containing zinc, iron, and indium from a hydro-zinc smelter (the solution contains 117g / L zinc, 14.58g / L iron, and 98.88mg / L indium), and the solution at room temperature Warm up to 95℃, gradually add 18g of zinc hypoxide powder containing about 50% zinc, control the pH value of the zinc-iron-indium solution during the indium-zinc separation process at 4.0, stir and react for 2h, carry out liquid-solid separation, filter to obtain indium precipitate The slag and zinc-containing liquid, in which the precipitation rate of indium is 94.43%, the zinc-containing liquid is immersed in the middle or after the purification and impurity treatment is sent to electrowinning zinc; the indium precipitation slag is dissolved by adding 150ml sulfuric acid with a concentration of 5%, and the concentration is added after PH=1 5ml of 98% sulfuric acid to reach an acid concentration of about 20g / L. After filtration, 185m...
Example Embodiment
[0020] Embodiment three:
[0021] Take 500ml of 3# low-acid leaching supernatant containing zinc, iron, and indium from a hydro-zinc smelter (the solution contains 125g / L zinc, 16.50g / L iron, and 200.4mg / L indium), and put the solution at room temperature Warm up to 25℃, gradually add 18g of zinc suboxide powder containing about 50% zinc. During the separation of indium and zinc, the pH value of the zinc, iron and indium solution is controlled at 4.2. After stirring and reacting for 1.8 hours, liquid-solid separation is carried out, and indium is obtained by filtration. Precipitation slag and zinc-containing liquid, in which the precipitation rate of indium is 98.52%, the zinc-containing liquid is sent to the middle immersion or after purification and impurity removal treatment, and then sent to electroplating zinc; the indium precipitation slag is added to 150ml zinc precipitation mother liquor, with a concentration of 98% sulfuric acid Dissolve in 10ml. After PH=1, add 10ml of ...
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