The issue of sulfuric acid concentration in electrolytes for electrolytic copper production
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May I ask everyone, what is an appropriate range for the concentration of sulfuric acid in the electrolyte used for electrolytic copper production? Thank you
A sulfuric acid concentration of around 160–190 g/l is appropriate.
180~200g/l is more appropriate
It is related to the current density as well as the composition of the anode plate; it is generally between 160 and 200, and adjustments should be made according to one’s actual conditions
Electrodeposition at 160~200 g/l
It is generally between 160 and 190. The choice depends on the specific components of the electrolyte. If it is electrolysis, the value should be as low as possible to prevent anode passivation. In the case of electrowinning, it depends on the concentration of anions in the electrolyte (F\CL). If the anion concentration is high, the acid concentration should not be too high, as this can cause severe corrosion of the anode plates. If the concentration of harmful anions is low or virtually zero, a higher acid concentration is beneficial for current transmission, helps to reduce the cell voltage, and improves current efficiency.
I work on multi-effect concentration systems to concentrate waste electrolytes, raising their concentration to 280–300 g/L. If you’re interested, feel free to discuss this further at zhjnavy015@163.com; I’m mainly involved in the design of such waste electrolyte concentration systems
-- Is it the copper ion concentration that is concentrated to 280, or is it the acid that is concentrated to 280?
Increase the acid concentration to this level: 9# FILTRATION-MAN
Cu electrolysis with acid: around 160–200 g/l