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    • 3. 发明公开
    • 폐 인쇄회로기판 재활용 방법
    • 回收废纸印刷电路板的方法
    • KR1020070077114A
    • 2007-07-25
    • KR1020070006022
    • 2007-01-19
    • 우 시에 센
    • 우시에센
    • B09B3/00B29B17/04H05K3/22B29L31/34B29B17/02
    • B29B17/02B29B17/04B29B2017/0255B29B2017/0293B29B2017/0496B29K2063/00B29K2105/06B29K2105/065B29K2705/00B29K2705/10B29L2031/3425C22B7/001C22B7/005H05K3/067H05K3/22H05K3/3494H05K2203/0361H05K2203/176H05K2203/178Y02P10/214Y02P10/22Y02P10/228Y02P10/236Y02P70/613Y02W30/622Y02W30/625Y10T29/49755B09B3/005Y02W30/54Y02W30/822
    • A method of recycling a wasted PCB(printed circuit board) is provided to prevent the wasted PCB from contaminating the natural environment after the wasted PCB is recycled by sorting out different metals remaining on the PCB step by step. A method of recycling a wasted PCB(printed circuit board)(10) by disposal steps comprising: (a) collecting and removing the electronic components so as to recycle the electronic components after removing all electronic components on all wasted PCBs by heating all electronic components on soldering points such that electronic components are not formed on wasted PCBs; (b) removing and collecting tin contained compounds by heating all such wasted PCBs without any electronic component to 200 deg.C or more, thereby melting soldering tin remained on surface layers of the wasted PCBs; (c) soaking the wasted PCBs of the step(b) into a tin removing solution such that the tin contained compounds in the inner layer are dissolved to separate components and copper from the tin contained compounds, and then directly collecting all of the tin contained compounds by the tin removing solution to recycle the tin contained compounds; (d) applying a strong acid solution to the wasted PCBs of the step(c) to remove a copper foil from the wasted PCBs by dissolving copper for spot-welding and copper for electroplating through a through-hole; (e) soaking the wasted PCBs of the step(d) into melted sodium nitrate to produce sodium bromide, carbonized fiberglass, copper foil, organic gas and nitrogen oxides by executing pyrolysis chemical reaction for separating brominated epoxy resin from fiberglass; and (f) directly collecting the carbonized fiberglass and copper foil to recycle the carbonized fiberglass and copper foil after separating carbonized fiberglass and copper foil by applying a water rinsing process on the mixture.
    • 提供回收浪费的PCB(印刷电路板)的方法,以防止浪费的PCB在循环使用废旧PCB之后污染自然环境,通过逐步分选PCB上残留的不同金属。 一种通过处理步骤回收浪费的PCB(印刷电路板)(10)的方法,包括:(a)收集和去除电子部件,以便在除去所有浪费的PCB上的所有电子部件之后,通过加热所有电子部件 在焊接点上,使电子元件不会在浪费的PCB上形成; (b)通过将没有任何电子部件的所有这些浪费的PCB加热到200摄氏度以上来除去和收集含锡化合物,从而熔化留在被浪费的PCB的表面层上的锡锡; (c)将废弃的步骤(b)的PCB浸入锡去除溶液中,使得内层中含锡的化合物溶解以从含锡化合物中分离成分和铜,然后直接收集所有含锡的锡 化合物由锡去除溶液回收含锡化合物; (d)将强酸溶液施加到步骤(c)的浪费的PCB上,以通过将通过溶解铜进行点焊和通过通孔进行电镀的铜来从废弃的PCBs中除去铜箔; (e)通过进行热分解化学反应将溴化环氧树脂与玻璃纤维分离,将步骤(d)中废弃的PCB浸入熔融的硝酸钠中,生成溴化钠,碳化玻璃纤维,铜箔,有机气体和氮氧化物; 和(f)通过在混合物上施加水冲洗方法,直接收集碳化玻璃纤维和铜箔来分离碳化玻璃纤维和铜箔之后的碳化玻璃纤维和铜箔。