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    Method for treating waste printed circuit boards with molten mixture of inorganic salts
    3.
    发明授权
    Method for treating waste printed circuit boards with molten mixture of inorganic salts 失效
    用无机盐的熔融混合物处理废印刷电路板的方法

    公开(公告)号：US6089479A

    公开(公告)日：2000-07-18

    申请号：US406726

    申请日：1999-09-28

    Applicant: Kuo-Ching Chang ,  Kuo-Jer Hwang ,  Gow-Guang Goan ,  Wei-Hsin Li

    Inventor： Kuo-Ching Chang ,  Kuo-Jer Hwang ,  Gow-Guang Goan ,  Wei-Hsin Li

    IPC: B03B9/06 ,  C22B7/00 ,  C22B15/00 ,  H05K3/22 ,  B02C19/00 ,  B02C19/12

    CPC classification number: H05K3/22 ,  B03B9/061 ,  C22B15/0056 ,  C22B7/001 ,  H05K2203/178 ,  Y02P10/214 ,  Y02P10/22 ,  Y02P70/613 ,  Y02W30/521 ,  Y02W30/822 ,  Y10S241/38

    Abstract: A method for treating waste printing circuit boards with molten mixture of inorganic salts comprising actions of: (1) putting the circuit boards into the molten inorganic salts contained in a treating furnace; (2) crushing and stirring for copper foil of the circuit boards to be separated therefrom; (3) further stirring to separate the foil from the plastic and the glass fiber of the circuit boards; (4) scraping the floating residues of the plastic and the glass fiber on upper surface of the molten inorganic salts with a floating residues scraping device; (5) collecting the carbonized plastic residues and the glass fiber; (6) converting waste gas produced in the process into an unharmful and stable one; and (7) removing the copper foil by a certain amount regularly with a removing device.

    Abstract translation: 一种用无机盐的熔融混合物处理废印刷电路板的方法，包括以下动作：（1）将电路板放入包含在处理炉中的熔融无机盐中; （2）对电路板的铜箔进行破碎和搅拌以与之分离; （3）进一步搅拌以将箔与塑料和电路板的玻璃纤维分开; （4）用浮动残渣刮除装置刮去熔融无机盐上表面上的塑料和玻璃纤维的漂浮残渣; （5）收集碳化塑料残渣和玻璃纤维; （6）将生产过程中的废气转化为无害稳定的废气; 和（7）用去除装置规则地去除铜箔一定量。

    Method for recycling waste from printed circuit board assemblies from electrical and electronic devices
    4.
    发明授权
    Method for recycling waste from printed circuit board assemblies from electrical and electronic devices 失效
    从印刷电路板组件从电气和电子设备回收废物的方法

    公开(公告)号：US5683040A

    公开(公告)日：1997-11-04

    申请号：US650713

    申请日：1996-05-20

    Applicant: Ralf Jakob ,  Michele Melchiorre

    Inventor： Ralf Jakob ,  Michele Melchiorre

    IPC: B02C13/02 ,  B02C19/18 ,  B03B9/06 ,  B03C1/23 ,  B03C1/24 ,  B03C7/02 ,  B03C7/06 ,  B07B9/00 ,  B09B5/00 ,  B29B17/02 ,  B29B17/04 ,  H05K3/22 ,  B02C19/12

    CPC classification number: B07B9/00 ,  B02C19/186 ,  B03B9/061 ,  B09B5/00 ,  B29B17/02 ,  B29B17/0408 ,  B29B2017/0265 ,  B29B2017/0488 ,  B29K2105/065 ,  B29K2705/04 ,  B29K2705/08 ,  B29K2705/12 ,  B29K2709/02 ,  B29K2709/08 ,  B29L2007/00 ,  B29L2031/3425 ,  H05K3/22 ,  Y02W30/521 ,  Y02W30/523 ,  Y02W30/526 ,  Y02W30/527 ,  Y02W30/622 ,  Y02W30/625 ,  Y02W30/82 ,  Y02W30/822 ,  Y10S241/37 ,  Y10S241/38

    Abstract: The invention relates to a method for recycling electronic waste in the form of disassembled printed circuit boards from electronic devices, from which the components have not been removed, known as printed circuit boards. After removal of the batteries, mercury switches and PCB-containing capacitors, the printed circuit boards are mechanically precomminuted and the particles are cryogenically embrittled with liquid nitrogen and comminuted in a hammermill. In order to obtain a higher purity of the recovered metal concentrates and, conversely, a lower metal content of the concentrated residue materials as well as less emission during recycling and a simpler process, the cryogenically embrittled particles are selectively comminuted batchwise in a hammermill, wherein the ground material is divided into a fine fraction, emerging from a sieve at the bottom of the grinding chamber, and a coarser metallic fraction, which can be discharged batchwise and from which iron particles can subsequently be magnetically removed. The fine fraction is sorted into several narrow-band size classes with a particle size of about 1:1.6 per size class. Each individual size class of particles can be separately separated with corona-roller separators into residue material particles and metal particles. The latter can then be divided into different metal classes.

    Abstract translation: 本发明涉及一种电子废料回收电子废物的方法，电子废料的形式是电子设备，组件尚未被从中去除，被称为印刷电路板。 在取出电池，水银开关和含PCB电容器之后，印刷电路板被机械预稀释，并且用液氮将颗粒低温地脆化并在锤磨机中粉碎。 为了获得更高纯度的回收的金属浓缩物，相反地，浓缩残余物质的较低金属含量以及再循环期间的较少的排放和更简单的方法，低温裂解颗粒在锤磨机中分批选择粉碎，其中 研磨材料被分为从研磨室底部的筛子出来的细小部分和可以间歇排出的较粗的金属部分，随后可以从其中磁性去除铁颗粒。 精细分数被分类成几个窄带大小类别，每个大小类别的粒度约为1：1.6。 每个单独尺寸的颗粒级可以用电晕辊分离器分离成残留物颗粒和金属颗粒。 后者可以分为不同的金属类。

    Process for reusing and recycling circuit boards
    6.
    发明申请
    Process for reusing and recycling circuit boards 审中-公开
    电路板重复使用和回收的过程

    公开(公告)号：US20040181923A1

    公开(公告)日：2004-09-23

    申请号：US10800937

    申请日：2004-03-15

    Inventor： James Carl Dills

    IPC: H02G001/12

    CPC classification number: H05K3/22 ,  B03B9/061 ,  H05K3/3463 ,  H05K2203/176 ,  H05K2203/178 ,  Y02P70/613 ,  Y02W30/822 ,  Y10T29/49755

    Abstract: A process for reusing circuit boards includes determining a type of solder used on a populated circuit board. A bio-slurry designed to remove the type of solder is selected. The populated circuit board is separated into a number of components and a circuit board.

    Abstract translation: 重新使用电路板的过程包括确定在填充电路板上使用的焊料的类型。 选择设计用于去除焊料类型的生物浆料。 所填充的电路板被分成许多部件和电路板。

    Apparatus and systems that separate and isolate precious and semi-precious metals from electronic circuit boards
    8.
    发明授权
    Apparatus and systems that separate and isolate precious and semi-precious metals from electronic circuit boards 失效
    将贵重金属和半贵金属与电子电路板分离和隔离的装置和系统

    公开(公告)号：US5829694A

    公开(公告)日：1998-11-03

    申请号：US582780

    申请日：1996-01-04

    Applicant: Ray Chapman

    Inventor： Ray Chapman

    IPC: B03B9/06 ,  C22B11/02 ,  H05K3/22 ,  B02C23/08 ,  B02C23/14

    CPC classification number: B03B9/061 ,  C22B11/025 ,  H05K3/22 ,  Y02P10/214 ,  Y02W30/521 ,  Y02W30/525 ,  Y02W30/822 ,  Y10S241/38

    Abstract: An apparatus separates a substantially metallic portion from a substantially non-metallic portion or constituent components of at least one electrical product, comprising a plurality of crushing machines, such as a first crushing machine and a second crushing machine and a separating machine. The first crushing machine crushes the at least one electrical product to create at least one crushed electrical product. The first crushing machine has a first screen affixed thereto to regulate a first flow of the at least one first crushed electrical product from the first crushing machine. The second crushing machine crushes the at least one first crushed electrical product to create at least one second crushed electrical product. The second crushing machine has a second screen affixed thereto to regulate a second flow of the at least one second crushed electrical product from the second crushing machine. At least one separating machine receives the at least one second crushed electrical product from the second crushing machine to separate into three general categories: the metallic portion, the non-metallic portion, and a mixed portion having metallic and non-metallic subportions. The mixed portion are directly returned to said second crushing machine to be recrushed and indirectly to at least one separating machine to be reevaluated. A plurality of conveyors may also be used to transport the at least one first crushed electrical product from the first crushing machine to the second crushing machine, the at least one second crushed electrical product from the second crushing machine to the at least one separating machine. A plurality of air separators may be used to remove non-metallic light weight materials from the crushed electronic products and deposit the non-metallic light weight materials in a collection bin.

    Abstract translation: 一种设备将基本上金属部分与至少一种电气产品的基本上非金属部分或组成部件分开，包括多个破碎机，例如第一破碎机和第二破碎机以及分离机。 第一破碎机破碎至少一个电气产品以产生至少一个破碎的电气产品。 第一破碎机具有固定在其上的第一筛网以调节来自第一破碎机的至少一个第一破碎电产品的第一流。 第二破碎机破碎至少一个第一压碎电气产品以产生至少一个第二压碎电气产品。 第二破碎机具有固定在其上的第二筛网，以调节来自第二破碎机的至少一个第二压碎电气产品的第二流动。 至少一个分离机器接收来自第二破碎机的至少一个第二压碎电气产品，以将其分为三大类：金属部分，非金属部分和具有金属和非金属子部分的混合部分。 将混合部分直接返回到所述第二破碎机，以重新再次间接地送至至少一个待重新评估的分离机。 还可以使用多个输送机将至少一个第一破碎的电气产品从第一破碎机输送到第二破碎机，所述至少一个第二压碎电产品从第二破碎机到至少一个分离机。 可以使用多个空气分离器来从破碎的电子产品中除去非金属轻质材料，并将非金属轻质材料沉积在收集箱中。

    Method of recovering valuable substances from printed circuit board
    9.
    发明授权
    Method of recovering valuable substances from printed circuit board 失效
    从印刷电路板中回收有价值物质的方法

    公开(公告)号：US5676318A

    公开(公告)日：1997-10-14

    申请号：US400769

    申请日：1995-03-08

    Applicant: Sadahiko Yokoyama ,  Masatoshi Iji

    Inventor： Sadahiko Yokoyama ,  Masatoshi Iji

    IPC: B02C15/00 ,  B02C15/04 ,  B02C23/12 ,  B02C23/14 ,  B02C23/32 ,  B03B9/06 ,  B02C7/00

    CPC classification number: B02C23/32 ,  B02C15/04 ,  B02C23/12 ,  B02C23/14 ,  B03B9/061 ,  B02C2015/002 ,  Y02W30/521 ,  Y02W30/524 ,  Y02W30/527 ,  Y02W30/822

    Abstract: In a method of grinding a printed circuit board, a printed circuit board having various parts mounted thereon, or a residual ground product produced in the manufacturing process for the boards, and recovering valuable substances by separating the ground product into a portion containing a large amount of metal component such as copper and a portion consisting a resin, a filler material, and the like through a separation step, the separation step includes a specific gravity separation step of separating the ground product into a portion containing a large amount of substance having a high specific gravity and a portion containing a large amount of substance having a low specific gravity, and an electrostatic separation step of separating the ground product into a portion having a large amount of conductor and a portion containing large amount of insulator. The grinding step includes a coarse grinding step and a fine grinding step.

    Abstract translation: 在研磨印刷电路板的方法中，具有安装在其上的各种部件的印刷电路板或在板的制造过程中产生的残留磨碎产品，并且通过将研磨产物分离成含有大量的部分来回收有价值的物质 金属成分如铜和由树脂，填料等组成的部分通过分离步骤，分离步骤包括比较分离步骤，将研磨产物分离成含有大量具有 高比重和含有大量比重的物质的部分，以及将研磨产物分离成具有大量导体的部分和含有大量绝缘体的部分的静电分离步骤。 研磨步骤包括粗磨步骤和细磨步骤。

    Method of separating and recovering valuable metals and non-metals from composite materials
    10.
    发明授权
    Method of separating and recovering valuable metals and non-metals from composite materials 失效
    从复合材料中分离和回收有价金属和非金属的方法

    公开(公告)号：US5630554A

    公开(公告)日：1997-05-20

    申请号：US391344

    申请日：1995-02-21

    Applicant: Chiaki Izumikawa ,  Hiroyuki Iwata ,  Shigehisa Endoh ,  Hitoshi Ohya

    Inventor： Chiaki Izumikawa ,  Hiroyuki Iwata ,  Shigehisa Endoh ,  Hitoshi Ohya

    IPC: B03B9/06 ,  B07B13/11 ,  B07B15/00 ,  B02C23/10

    CPC classification number: B03B9/061 ,  B07B13/11 ,  B07B15/00 ,  Y02W30/527 ,  Y02W30/822 ,  Y10S241/31

    Abstract: To insure that rejects or scraps of composite materials such as printed wiring boards that consist of the mixture of metal and non-metal parts are separated into the metal and non-metal components with good precision so that both components can be recovered as recyclable valuables, the composite materials are broken into pieces by means of a shearing machine or the like and the pieces are thereafter ground with a hammer mill or the like to form a mixed powder consisting of metal and non-metal particles, which mixed powder is then fed continuously on to a belt conveyor inclined at an angle with respect to a line perpendicular to the direction of travel, whereby the metal particles are efficiently separated from the non-metal particles; the recovered metal particles being fed to an electrostatic separator to obtain higher grade of concentration by removing the non-metal inclusions.

    Abstract translation: 为了确保复合材料（例如由金属和非金属部件的混合物组成的印刷线路板）的复制材料的废品或废料以高精度分离成金属和非金属部件，从而可以作为可回收的贵重物品回收两种成分， 通过剪切机等将复合材料破碎成碎片，然后用锤磨机等研磨，形成由金属和非金属颗粒组成的混合粉末，然后将混合粉末连续进料 在相对于与行进方向垂直的线倾斜一定角度的带式输送机上，金属颗粒与非金属颗粒有效分离; 通过去除非金属夹杂物将回收的金属颗粒进料到静电分离器以获得较高的浓度。

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