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What do you think about controlling the electric current through the dosage of sodium hydroxide?We have problems with control the electric current in the electrowinning. The actual concentration is 1,5% (NaOH), the pH is 11,0 to 11,8 in the solution. But, I know that pH must be 12,5. However, the increase the concentration of soda can cause the other problems. I would like you comment and talk about the maximum concentration of soda (sodium hydroxide) that you can practice.
It isn't always possible to control the current through the rectifier. Conditions of liquor greatly influence the electrical conduction.