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    • 77. 发明公开
    • 폐인쇄회로기판으로부터 금속을 회수하는 방법
    • 废弃印刷电路板金属的新型预处理工艺
    • KR1020140036480A
    • 2014-03-26
    • KR1020120102582
    • 2012-09-17
    • 한국지질자원연구원
    • 정진기이재천신우철
    • C22B7/00B09B3/00
    • B09B3/00B03B5/28B03B9/061B09B5/00C22B7/005Y02P10/212Y02W30/524Y02W30/82Y02W30/822
    • The present invention relates to a method for recovering a valuable metal contained in a printed circuit board of waste electrical and electronic equipment. Provided is the method for recovering a metal from a waste printed circuit board comprising: (a) a step for manufacturing a mixture including a metal, plastics, and water by liberating a metal and plastics by ball milling a cut waste printed circuit board by pouring water into the cut waste printed circuit board; and (b) a step for separating and recovering the metal which is liberated by floating pulp, which is the mixture. According to the present invention, efficiency of separating a metal component and a non-metal component from a waste printed circuit board is improved, and particularly, a simple and economical method for recovering a metal component which exists between plastic components is provided. [Reference numerals] (AA) Cut waste printed circuit board; (BB) Water/Organic solvent; (CC) Liberation by ball milling; (DD) Floatation separation; (EE) Metal; (FF) Non-metal (Plastic)
    • 本发明涉及一种用于回收废电子电气设备的印刷电路板中所含有价值金属的方法。 本发明提供从废印刷电路板回收金属的方法,其特征在于包括:(a)通过浇注切割的废弃印刷电路板,通过将金属和塑料进行球磨,从而制造包括金属,塑料和水的混合物的步骤 水切入废印刷电路板; 和(b)用于分离和回收由作为混合物的浮浆释放的金属的步骤。 根据本发明,提高了从废印刷电路板分离金属成分和非金属成分的效率,特别是提供了回收存在于塑料成分之间的金属成分的简单且经济的方法。 (附图标记)(AA)切割废印刷电路板; (BB)水/有机溶剂; (CC)通过球磨解放; (DD)浮选分离; (EE)金属; (FF)非金属(塑料)
    • 78. 发明公开
    • 염산용액을 이용한 폐무연솔더 재활용 방법
    • 使用氢氯酸回收无铅焊锡废料的方法
    • KR1020130060878A
    • 2013-06-10
    • KR1020110127170
    • 2011-11-30
    • 한국지질자원연구원
    • 유경근이재천정진기김민석김수경김병수
    • C22B3/10C22B15/00C22B11/00B09B3/00
    • Y02P10/234C22B3/10B09B3/00C22B11/00C22B15/00
    • PURPOSE: A method for recycling lead-free solder waste using hydrochloric acid is provided to efficiently and economically separate useful metal including tin metal from lead-free solder waste through a wet smelting process. CONSTITUTION: A method for recycling lead-free solder waste using hydrochloric acid is as follows. Solder waste is put into hydrochloric acid solution and an oxidant is supplied so that solid silver chloride is formed and precipitated by tin and the tin and copper are dissolved into ion to be mixed into the hydrochloric acid solution(10). The precipitated solid silver chloride obtained in the hydrochloric acid precipitation step and the hydrochloric acid solution in which the copper and tin are mixed are separated from each other(20,30). The copper is recovered by being separated from the hydrochloric acid solution after the solid-liquid separation step(40). An anode electrode and a cathode electrode are inserted into the hydrochloric acid solution and the tine is recovered from the hydrochloric acid solution through electrolytic withdrawal(50). [Reference numerals] (10) Hydrochloric acid precipitation step; (20) Solid-liquid separation step; (30) Silver recovery step; (40) Copper recovery step; (41) Substitution step; (42) Solid-liquid separation; (50) Tin recovery step
    • 目的:提供使用盐酸回收无铅焊料废物的方法,通过湿法冶炼工艺有效和经济地分离包括锡金属在内的有用金属与无铅焊料废料。 构成:使用盐酸回收无铅焊料废料的方法如下。 将废弃物放入盐酸溶液中,并供给氧化剂,使得由锡形成固体氯化银并沉淀,将锡和铜溶解成离子以混合到盐酸溶液(10)中。 在盐酸沉淀步骤中得到的沉淀固体氯化银和混合有铜和锡的盐酸溶液彼此分离(20,30)。 通过在固液分离步骤(40)之后与盐酸溶液分离来回收铜。 将阳极电极和阴极电极插入盐酸溶液中,并通过电解抽出从盐酸溶液回收齿(50)。 (附图标记)(10)盐酸沉淀步骤; (20)固液分离步骤; (30)银回收步骤; (40)铜回收步骤; (41)替代步骤; (42)固液分离; (50)锡回收步骤
    • 80. 发明公开
    • 알카리 용액을 이용한 폐금속 내 주석의 전해분리방법
    • 使用碱性溶液从使用金属中电解脱锡的方法
    • KR1020120138922A
    • 2012-12-27
    • KR1020110058354
    • 2011-06-16
    • 한국지질자원연구원
    • 김수경이재천정진기김병수
    • C25C1/14
    • C25C1/14
    • PURPOSE: A method for electrolytic parting of tin in waste metal using an alkali solution is provided to selectively leach and separate tin from waste metal by assigning tin-containing waste metal as an anode and precipitating tin leached from the anode at a cathode. CONSTITUTION: In a method for electrolytic parting of tin in waste metal using an alkali solution, a cathode and an anode are installed in an alkali solution to implement electrolytic parting, wherein tin-containing waste metal is used as the anode so that leached tin is precipitated at the cathode. The temperature of the alkali solution is maintained at 60-90°C during electrolytic parting.
    • 目的:提供一种使用碱溶液对废金属中的锡进行电解分离的方法,通过分配含锡废金属作为阳极并在阴极上从阳极析出锡来选择性地将锡与废金属浸出并分离。 构成:在使用碱溶液的废金属中电解分离锡的方法中,将阴极和阳极安装在碱溶液中以实施电解分离,其中使用含锡废金属作为阳极,使得浸出的锡为 在阴极沉淀。 在电解分离过程中碱溶液的温度保持在60-90℃。