Patent ID: 11939229
Assignee: CENTRAL SOUTH UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. The method according to claim 2, wherein when the acidic waste etching solution is the high-impurity acidic etching solution, the step S4 comprises:
removing impurities from the high-impurity acidic waste etching solution;
adding the ammonia solution and the high-impurity acidic waste etching solution after an impurity removal treatment in a parallel-flow manner into the slurry containing the basic copper chloride mono-crystals for a second agglomeration reaction to obtain the basic copper chloride crystal particles and the copper-removed waste solution, wherein a concentration of the ammonia solution added with the high-impurity acidic waste etching solution is 10 wt %-20 wt %; and
then filtering, washing and drying the basic copper chloride crystal particles obtained by the second agglomeration reaction in the sequence to obtain basic copper chloride solids.