Method for achieving germanium precipitation through metallic oxide
An oxide and germanium precipitation technology, applied in the direction of improving process efficiency, can solve the problems of low germanium grade, high raw material requirements, harsh operating conditions, etc. Effect
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[0017] Example 1
[0018] Take 50L of sulfuric acid leaching solution from cobalt copper smelting as the preliquid for germanium precipitation, in which the concentration of Cu is 0.73g / L, the concentration of Fe is 22.97g / L, the concentration of Ge is 1.09g / L, and the other impurity concentrations are shown in Table 1, and heated to 72℃ , Add metal oxides and water to the germanium precipitation pre-liquid, adjust the pH value to 5.0, carry out an alkaline one-step germanium precipitation reaction for 1h, then filter, one-step filter residue is washed and then dried for testing; one-step filtrate is heated to 70℃ and then metal oxide is added With water, adjust the pH value to 6.0, carry out the second-stage germanium precipitation reaction for 1 hour and then filter, the second-stage filter residue is washed and then dried for testing, and the second-stage filtrate is tested. The test results are shown in Table 1.
[0019] Table 1 Test results of Example 1
[0020] ingredien...
Example Embodiment
[0022] Example 2
[0023] Take 50L of sulfuric acid leaching solution from cobalt copper smelting as the preliquid for germanium precipitation, in which the concentration of Cu is 0.55g / L, the concentration of Fe is 24.04g / L, the concentration of Ge is 1.28g / L, and the other impurity concentrations are shown in Table 2, and heated to 75℃ , Add metal oxides and water to the germanium precipitation pre-liquid, adjust the pH value to 4.5, carry out an alkaline one-step germanium precipitation reaction for 1.5h, then filter, one-step filter residue is washed and then dried for testing; one-step filtrate is heated to 72℃, and metal oxidation is added And water, adjust the pH value to 5, carry out the second-stage germanium precipitation reaction for 2 hours and then filter, the second-stage filter residue is washed and then dried for testing, and the second-stage filtrate is tested. The test results are shown in Table 2.
[0024] Table 2 Test results of Example 2
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[0026]
[00...
Example Embodiment
[0028] Example 3
[0029] Take 50L of sulfuric acid leaching solution from cobalt copper smelting as the preliquid for germanium precipitation, in which the concentration of Cu is 0.46g / L, the concentration of Fe is 3.68g / L, the concentration of Ge is 0.79g / L, and the concentration of other impurities is shown in Table 3, heated to 70℃ , Add metal oxide and water to the germanium precipitation pre-liquid, adjust the pH value to 6, carry out an alkaline one-step germanium precipitation reaction for 1h, then filter, one-step filter residue is washed and then dried for testing, one-step filtrate is heated to 75℃ and then metal oxide is added With water, adjust the pH value to 7, carry out the second-stage germanium precipitation reaction for 1 hour and then filter, the second-stage filter residue is washed and then dried for testing, and the second-stage filtrate is tested. The test results are shown in Table 3.
[0030] Table 3 Test results of Example 3
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[0032]
[0033] It ...
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