A method of ultrasonic external field assisting the precipitation of arsenic-containing crystals in copper electrolyte
A copper electrolyte and electrolyte technology, applied in the direction of electrolytic components, electrolysis process, photographic auxiliary process, etc., can solve the problem of difficult solid-solid separation, etc., and achieve the effect of simple process, environmental friendliness and uniform particle size
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Embodiment 1
[0025] Taken from the copper electrolyte of a smelter, the As concentration is 3407mg / L, Sb 382mg / L, Bi 787mg / L. Take 500mL of the electrolyte, adjust the solution potential to 500mV, and adjust the pH of the solution to -0.27. It was placed in a water bath with a constant temperature of 70° C. to stir the reaction at a speed of 500 r / min, and an ultrasonic external field with a power of 1000 W was applied at the same time. After 1d reaction, the collected precipitates were detected by SEM and XRD, and the detection results were as follows: figure 1 shown. It can be seen from the detection results that the crystal phase of the precipitate obtained under this condition is mainly BiAsO 4 Substance, BiAsO 4 The highest peak intensity of the crystal is 230.
Embodiment 2
[0032] Taken from the copper electrolyte of a smelter, the As concentration is 3407mg / L, Sb 382mg / L, Bi 787mg / L. Take 500mL of the electrolyte, adjust the solution potential to 570mV, and adjust the pH of the solution to -0.27. It was placed in a water bath with a constant temperature of 70°C to stir the reaction at a speed of 500 rpm, while an ultrasonic field with a power of 1000 W was applied. After 1d reaction, the collected precipitates were detected by SEM and XRD, and the detection results were as follows: Figure 4 shown. It can be seen from the test results that the precipitate obtained under this condition is single, mainly BiAsO4 Substance, BiAsO 4 The highest peak intensity of the crystal is 750.
Embodiment 3
[0037] Taken from the copper electrolyte of a smelter, the As concentration is 3407mg / L, Sb 382mg / L, Bi 787mg / L. Take 500 mL of the electrolyte, adjust the potential of the solution to 588 mV, and adjust the pH of the solution to -0.27. It was placed in a water bath with a constant temperature of 70° C. to stir the reaction at a speed of 500 r / min, and at the same time, an ultrasonic field with a power of 1000 W was applied. After 2d reaction, the collected precipitates were detected by SEM and XRD, and the detection results were as follows: Image 6 shown. It can be seen from the test results that the precipitate obtained under this condition is single, mainly BiAsO 4 Substance, BiAsO 4 The highest peak intensity of the crystal is 900.
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