发明名称 |
Preparation of highly pure copper oxide from waste etchant |
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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申请公布号 |
US6649131(B2) |
申请公布日期 |
2003.11.18 |
申请号 |
US20010767950 |
申请日期 |
2001.01.24 |
申请人 |
MYUNG JIN CHEMICAL CO., LTD. |
发明人 |
SEO KYU BUM;UH YOUNG SUN;KIM YOUNG HEE;HAN JUNG YOON;KIM SUN JIN;KIM MYUNG HUN |
分类号 |
C01G3/02;C22B15/00;(IPC1-7):C01G3/00 |
主分类号 |
C01G3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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