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Use the industrial fabric electrolysis test found that the different acidity slot voltage not change over time, copper and cobalt leaching rate changes over time showing a rising trend, which in the the [H ] = 0.1 mol / L, the copper leaching rate of the highest; found through different current density and electrolysis time of exploration test, a current of 4 A, the electrolysis time of 8 h and the leaching rate of the copper and cobalt higher; containing of Fe was added to the cathode 2 additive solution, the test results show that the additives have little effect on the leaching rate of copper and cobalt. The fixed cathode conditions for anode single factor test results show that the increased speed, lower acidity favor the leaching of copper and cobalt, when the rotational speed of 500 r / min [the H ] = 0.8 mol / L, the electrolysis temperature 40 ℃, current of 2 A, electrolysis time of 5 h, the copper leaching rate is the highest, reaching 91%. The high temperature of the ion-exchange membrane will be damage, will generate acid mist pollution of the environment, while the high current and electrolysis time electrolysis process energy consumption will increase, raising the cost, is not conducive to industrial production; too low electrolytic temperature and current, ion activity is too low, the reaction rate slows down, the same is not conducive to the leaching of copper and cobalt. At the same time to speed the anode current efficiency is very significant, when the speed of 500 r / min, the current efficiency of up to 93.49%, significantly higher than the efficiency of the current speed conditions. The stationary anode conditions cathode single factor test, due to the limited capacity of ion-exchange membrane high temperature, it is only a test of speed, acidity, and the concentration of copper ions, results show that the the cathode electrolysis optimal conditions for the speed of 500 r / min [H ] = 0.8 mol / L, [Cu 2 ] = 60 g / L, the current of 2 A, electrolysis time of 5 h electrolysis temperature of 40 ° C. The impact of the cathode of various factors on the efficiency of the cathode current significant degree: of [Cu 2 ] gt; Speed ??gt; acidity; under optimal conditions, the current efficiency of 98.95%, the energy consumption is 1244 kWh / t . Orthogonal experiment to determine the anode and cathode electrolysis optimal conditions, select test larger impact conditions, speed, temperature and acidity. The results show that the various factors that affect the size of the copper leaching rate in the cathode in the electrolysis process in turn speed gt; acidity gt; temperature. Anode in electrochemical leaching of the various factors that affect the size of the copper leaching rate in turn speed gt; temperature gt; acidity. By orthogonal test anode and cathode can be the electrolytic better conditions, namely speed of 500 r / min, [H ] = 0.8 mol / L, the electrolysis temperature is 40 ℃, the current of 2 A, electrolytic time of 5 h, the cathode [Cu 2 ] = 60 g / L. Compared with the traditional industrial production, and the use of ion-exchange membrane electrolytic separation of copper and cobalt, can not only reduce production costs, improve efficiency and protect the environment, but also improve the utilization of the equipment. Optimal conditions, the anode and cathode current efficiency of 94.49% and 96.75%, respectively, the energy consumption of 1326 kWh / t and 1294 kWh / t.
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