A method for extracting lead from lead plaster and lead sulfide concentrate by wet method
A lead sulfide, all-wet technology, applied in the field of lead extraction, can solve problems such as environmental pollution, and achieve the effects of reducing use costs, good stability, and being beneficial to environmental protection
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Embodiment 1
[0058] The phases of the lead sulfate material used in the test are shown in Table 1, and the chemical composition of the lead sulfide concentrate is shown in Table 2.
[0059] Table 1 lead sulfate material lead phase analysis / %
[0060] Phase
[0061] Table 2 Chemical composition of lead sulfide concentrate
[0062] element
[0063] Get lead sulfate material 200g (its lead material phase is as table 1), and the carbonate consumption in the carbonate solution of preparation is 1.3 times of theoretical amount, press material and carbonate solution in beaker by liquid-solid ratio 4:1mL / g Mix and mix in medium, stir at 200r / min, convert at a temperature of 85°C for 1.0h; filter and wash until no sulfate exists in the washing liquid. Take the material after desulfurization and conversion, add the material to the acidic leachate (containing 1mol / L of free methanesulfonic acid and 50g / L of lead methanesulfonate) according to the liquid-solid ratio of 4:1mL / g, an...
Embodiment 2
[0065] The phases of the lead sulfate material used in the test are shown in Table 1, and the chemical composition of the lead sulfide concentrate is shown in Table 2.
[0066]Get lead sulfate material 400g (its lead material phase is as table 1), and the carbonate consumption in the carbonate solution of preparation is 1.5 times of theoretical amount, press material and carbonate solution in beaker by liquid-solid ratio 6:1mL / g and put it into a water bath with a stirring speed of 200r / min, transform at a temperature of 25°C for 2.5h; filter and wash until no sulfate exists in the lotion. Take the desulfurized conversion material, add the material to the acidic leachate (containing 1.3mol / L of free methanesulfonic acid and 30g / L of lead methanesulfonate) according to the liquid-solid ratio of 5:1mL / g, and stir at a stirring speed of 400r / min. Leach at a temperature of 75°C for 2.5 hours, and obtain filter residue and neutral leachate after separation; lead sulfide concentrate...
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