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Preparation of highly pure copper oxide from waste etchant
Preparation of highly pure copper oxide from waste etchant
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机译:用废蚀刻剂制备高纯氧化铜
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摘要
A method for recycling copper oxide includes: a first step in which a sodium hydroxide aqueous solution is added to acidic copper chloride waste etchant produced in the PCB industry, to obtain copper hydroxide slurry; and a second step in which the slurry obtained in the first step is heated and sintered to thereby prepare a needle-form copper oxide. Since copper oxide has a purity of more than 99.0 wt % and the needle-form crystal morphology, so that it has an excellent filtering ability and homogeneous particle size distribution.
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