Copper oxide powder preparation method
A technology of copper oxide powder and oxidant, applied in the direction of copper oxide/copper hydroxide, etc., can solve the problems such as inability to effectively recover and process copper, and achieve the effects of simple method, low process cost and high commercial value
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[0018] The embodiment of the present application provides a method for preparing copper oxide powder, comprising the following steps:
[0019] S01, performing a first mixing treatment on the acidic etching waste liquid containing cuprous ions and an oxidizing agent so that the cuprous ions are oxidized to copper ions to form a first mixed solution;
[0020] S02. Perform a second mixing treatment on the first mixed solution and the alkaline solution under the conditions of pH≧8 and temperature>50° C. to form copper oxide, filter, and wash to obtain copper oxide powder.
[0021] Specifically, in step S01, the acidic etching waste liquid containing cuprous ions and the oxidizing agent are subjected to the first mixed treatment, so that the cuprous ions in the acidic etching waste liquid are oxidized to copper ions by the oxidizing agent, thereby obtaining the first copper ion-containing mixture.
[0022] In some embodiments, the waste acidic etching liquid is waste acidic etchin...
Embodiment 1
[0067] This embodiment adopts as figure 1 Shown device and printed circuit board acid etchant are prepared copper oxide powder, specifically comprise the following steps:
[0068] (1) The acidic etching waste liquid of the printed circuit board is pumped in the first reaction barrel 1 through the first pipeline 52, and when the acidic etching waste liquid reaches the designated position of the first reaction barrel 1, the first stirring element 12 is opened, and In the stirring state, the oxidizing agent is added into the first reaction barrel 1 from the oxidizing agent feeding port 6 through the second pipeline 62, and stirred for 60 minutes to obtain the first mixed solution, wherein the amount of the oxidizing agent is adjusted so that its mass percentage concentration in the first mixed solution is 4%, stand for use;
[0069](2) Add pH>12 sodium hydroxide solution in the second reaction tank 2 until the solution reaches 1 / 3 of the height of the tank, and use the temperatu...
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