Method for recycling zinc and cobalt in wet-type smelting zinc purifying slag
A technology of zinc hydro-smelting and recovery method, which is applied in the recycling of zinc and cobalt purification slag from hydro-smelting zinc smelting, can solve the problems of waste of raw materials, etc., and achieve the reduction of usage and high efficiency The effect of reuse value and reasonable process design
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[0025] Example 1
[0026] A method for recovering zinc and cobalt in the purification slag of wet zinc smelting, the method includes the following steps:
[0027] S1: The copper-cadmium slag purified in the first stage of hydro-zinc smelting is subjected to neutral leaching, primary replacement, and secondary replacement, and the produced cadmium-poor cobalt solution is placed in a cadmium-poor cobalt sink for treatment;
[0028] Among them, the cadmium-poor cobalt solution placed in the cadmium-poor cobalt sink is 40m 3 , The content of cobalt is 0.089g / l, and the content of zinc is 45.5g / l; S2: recover the cobalt-nickel slag produced in the second stage of hydro-zinc smelting, and use the acid-containing 150-200g / l waste generated in the electrolysis process to remove The cobalt-nickel slag is slurried (mixed and stirred), and the slurry is reacted for 4 hours to obtain a slurried slurry;
[0029] The slurried cobalt-nickel slag slurry is transported to the cadmium-poor cobalt sink ...
Example Embodiment
[0034] Example 2
[0035] A method for recovering zinc and cobalt in the purification slag of wet zinc smelting, the method includes the following steps:
[0036] S1: The copper-cadmium slag purified in the first stage of hydro-zinc smelting is subjected to neutral leaching, primary replacement, and secondary replacement, and the produced cadmium-poor cobalt solution is placed in a cadmium-poor cobalt sink for treatment;
[0037] Among them, the solution placed in the cadmium-poor cobalt sink is 35m 3 ; The content of cobalt in the cadmium-poor cobalt solution is 0.15g / l, and the content of zinc in the waste solution is 53.8g / l;
[0038] S2: Recover the cobalt-nickel slag produced in the second stage of hydro-zinc smelting, and slurry the cobalt-nickel slag with an acid-containing waste liquid with an acidity of 150-200g / l (mixing and stirring), and the slurrying reaction for 3 hours to obtain a slurry slurry;
[0039] The slurried cobalt-nickel slag slurry slurry is transported to the ...
Example Embodiment
[0044] Example 3
[0045] A method for recovering zinc and cobalt in the purification slag of wet zinc smelting, the method includes the following steps:
[0046] S1: The copper-cadmium slag purified in the first stage of hydro-zinc smelting is subjected to neutral leaching, primary replacement, and secondary replacement, and the produced cadmium-poor cobalt solution is placed in a cadmium-poor cobalt sink for treatment;
[0047] Among them, the cadmium-poor cobalt solution placed in the cadmium-poor cobalt sink is 30m 3 , The cobalt content in the cadmium-poor cobalt solution is 0.26g / l, and the zinc content in the waste solution is 55.6g / l;
[0048] S2: Recover the cobalt-nickel slag produced in the second stage of the hydro-zinc smelting process, and use the acid-containing waste liquid with an acidity of 150-200g / l generated during the electrolysis process to slurry the cobalt-nickel slag (mixing and stirring), and the slurrying reaction is 3h, Obtained pulped pulp;
[0049] The sl...
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