A kind of method that reclaims germanium from sulfate solution
A sulfate and solution technology, which is applied in the field of scattered metal recovery and hazardous waste treatment, can solve the problems of complex operation, high cost, and great environmental hazards, and achieve the effect of improving separation efficiency, high recovery rate, and simple steps
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Embodiment 1
[0026] (1) Under the condition of pH=1.0, add ferric iron molar weight 0.8 times iron powder to reduce ferric iron in the sulfate solution to ferrous iron, wherein, the content of each element in the solution after iron powder reduction is: germanium 0.05 -0.06g / L, zinc 40g / L, arsenic 0.75g / L, ferric iron 0.2g / L, cadmium 0.2g / L, silicon 0.1g / L, then add tartaric acid, the addition amount is 5% of the molar amount of germanium times, mix evenly to form a water phase, and adjust the pH of the water phase to 1.2;
[0027] (2) The organic phase contains 25% N235, 10% TOP and 65% sulfonated kerosene, and the aqueous phase and the organic phase are mixed at a ratio of 1:1 for single-stage extraction to obtain an organic phase containing germanium. The extraction rate of each element is shown in Table 1.
[0028] Table 1
[0029] element Ge(IV) Zn(II) As(III) Fe(III) Cd(II) Si(IV) Extraction rate 93.8％ 0.0％ 1.3％ 0.9％ 0.0％ 0.0％
[0030] (3) Usin...
Embodiment 2
[0032] (1) Under the condition of pH=0.8, add iron powder with 0.8 times the molar amount of ferric iron to reduce the ferric iron in the sulfate solution to ferrous iron, wherein, the content of each element in the solution after the iron powder is reduced is: germanium 0.05-0.06g / L, zinc 40g / L, arsenic 0.75g / L, iron 0.15g / L, cadmium 0.2g / L, silicon 0.1g / L, then add tartaric acid, the amount of which is 7 times the molar amount of germanium , mix evenly to form a water phase, and adjust the pH of the water phase to 1.2;
[0033] (2) The organic phase contains 25% N235, 10% TOP and 65% sulfonated kerosene, and the aqueous phase and the organic phase are mixed at a ratio of 1:1 for single-stage extraction to obtain an organic phase containing germanium; the extraction rate of each element As shown in table 2.
[0034] Table 2
[0035] element Ge(IV) Zn(II) As(III) Fe(III) Cd(II) Si(IV) Extraction rate 95.7％ 3.7％ 3.7％ 0.9％ 0.5％ 0.1％
[003...
Embodiment 3
[0038] (1) Under the condition of pH=1.0, adding iron powder of 1.0 times of ferric iron molar weight will reduce the ferric iron in the sulfate solution to ferrous iron, wherein, the content of each element in the solution after the reduction of iron powder is: Germanium 0.05-0.06g / L, zinc 40g / L, arsenic 0.75g / L, iron 0.1g / L, cadmium 0.2g / L, silicon 0.1g / L, then add tartaric acid, the amount added is 5% of the molar amount of germanium times, mix evenly to form a water phase, and adjust the pH of the water phase to 1.2;
[0039] (2) The organic phase contains 10% N235, 10% TOP and 80% sulfonated kerosene, and the aqueous phase and the organic phase are mixed at a ratio of 1:1 for single-stage extraction to obtain an organic phase containing germanium; the extraction rate of each element as shown in Table 3.
[0040] table 3
[0041] element Ge(IV) Zn(II) As(III) Fe(III) Cd(II) Si(IV) Extraction rate 90.1％ 0.1％ 0.0％ 0.4％ 0.0％ 2.3％
[004...
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