Process for producing cupric hydroxide or cupric oxide

[0007] The method for preparing copper hydroxide of the present invention will be further described in detail below in conjunction with specific examples.

[0008] Such as figure 1 As shown, the soluble copper-containing solution of copper nitrate, copper sulfate or copper chloride produced in the production of circuit boards with 1-30% copper is filtered and placed in container 1, and the copper-containing 1-30% alkaline chlorination Cuprocopper ammonium ion or the sodium hydroxide solution that is 1~45% is placed in the container 2 after filtering, and in the reactor 4, the solution in the two containers is added under stirring situation simultaneously,

[0009] When the pH in the solvent is controlled at 4.5-9 and the volume of the solution in the reactor 4 rises to more than 2000L, start to open the discharge valve at the lower outlet of the reactor 4 while feeding and reacting, and turn on the pressure filter pump for pressure filtration or centrifuge Centrifuge, wash wi...