A kind of production technology of anhydrous cuprous chloride
A technology of cuprous chloride and production process, applied in the field of production process of anhydrous cuprous chloride, can solve problems such as excessive iron impurities, and achieve the effects of improving yield, reducing pollution and improving purity
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Embodiment 1
[0035] A kind of production technology of anhydrous cuprous chloride, comprises the steps:
[0036] a, the etching solution containing copper chloride produced in the electronics industry is filtered to remove solid impurities, the mass percentage of cuprous chloride in the etching solution is 7%, and the pH of the etching solution is 0;
[0037] b. Adding a sufficient amount of 30% sodium hydroxide solution by mass to the etching solution for removing impurities in step a, so that the pH is 3;
[0038] c. Add a sufficient amount of copper hydroxide to the reaction vessel, then add the etching solution obtained in step b, stir evenly, and control the pH to 6. The outlet of the reaction vessel is equipped with a tail gas absorption device, and 20% sodium hydroxide solution;
[0039] d. Add sodium sulfite several times in small amounts to the etching solution in step c, stir evenly, generate cuprous chloride precipitation, control the reaction temperature to be 38°C, and the ga...
Embodiment 2
[0043] A kind of production technology of anhydrous cuprous chloride, comprises the steps:
[0044] A, the etching solution containing copper chloride produced in the electronics industry is filtered to remove solid impurities, the mass percentage of cuprous chloride in the etching solution is 7.2%, and the pH of the etching solution is 0.3;
[0045] b. Adding a sufficient amount of 30% sodium hydroxide solution to the etching solution for removing impurities in step a, so that the pH is 3.2;
[0046] c. Add a sufficient amount of copper hydroxide to the reaction vessel first, then add the etching solution obtained in step b, stir evenly, and control the pH to 6.2. The outlet of the reaction vessel is provided with a tail gas absorption device, which contains 20% sodium hydroxide solution;
[0047] d. Add sodium sulfite several times in small amounts to the etching solution in step c, stir evenly to form cuprous chloride precipitation, control the reaction temperature to be 3...
Embodiment 3
[0051] A kind of production technology of anhydrous cuprous chloride, comprises the steps:
[0052] A, the etching solution containing copper chloride produced in the electronics industry is filtered to remove solid impurities, the mass percentage of cuprous chloride in the etching solution is 7.5%, and the pH of the etching solution is 0.5;
[0053] b. Adding a sufficient amount of 30% sodium hydroxide solution by mass to the etching solution for removing impurities in step a, so that the pH is 3.5;
[0054] c. Add a sufficient amount of copper hydroxide to the reaction vessel, then add the etching solution obtained in step b, stir evenly, and control the pH to 6.5. The outlet of the reaction vessel is equipped with a tail gas absorption device, which contains 20% sodium hydroxide solution;
[0055] d. Add sodium sulfite several times in small amounts to the etching solution in step c, stir evenly to form cuprous chloride precipitation, control the reaction temperature to 40°C...
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