Comprehensive recycling method for non-ferrous metal metallurgy acidic wastewater and zinc-containing residues
A non-ferrous metal and dirty acid technology, applied in the direction of improving process efficiency, etc., can solve problems such as low resource recovery rate, complex metal components, and environmental hazards
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Embodiment 1
[0030] The sewage acid treated in this example is taken from the acid system of a zinc smelting enterprise, and the contents of the various components of the sewage acid are shown in the following table:
[0031] Element
h 2 SO 4
As
Fe
CD
F
Cl
Pb
Zn
Content (g / L)
60
0.3
0.05
0.6
1.5
2
0.1
0.15
[0032] Process this polluted acid with the method for sewage acid comprehensive treatment and recycling of the present invention, comprise the following steps:
[0033] Step 1: Batch the zinc-containing slag produced during the zinc smelting process of the plant, including the zinc scum floating on the surface during the ingot casting process and the secondary zinc oxide produced during the fuming process. The ingredients after batching are listed in the following table Show:
[0034] Element
Zn
In
Ag
Pb
Content (wt.%)
65
0.08
0.02
7.6
[0035] Add the z...
Embodiment 2
[0043] The sewage acid treated in this example is taken from the acid system of a zinc smelting enterprise, and the contents of the various components of the sewage acid are shown in the following table:
[0044] Element
h 2 SO 4
As
Fe
CD
F
Cl
Pb
Zn
Content (g / L)
60
0.3
0.05
0.6
1.5
2
0.1
0.15
[0045] Process this polluted acid with the method for sewage acid comprehensive treatment and recycling of the present invention, comprise the following steps:
[0046] Step 1: Batch the zinc-containing slag produced during the zinc smelting process of the plant, including the zinc scum floating on the surface during the ingot casting process and the secondary zinc oxide produced during the fuming process. Ingredients shown:
[0047] Element
Zn
In
Ag
Pb
Content (wt.%)
65
0.08
0.02
7.6
[0048] Add the zinc-containing slag material after batching to 1m 3...
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