Results 1 to 5 of 5
  1. #1
    sathyashrayan started this thread.
    sathyashrayan's Avatar
    SMF Badges of Honor

    Member since
    Jul 2018
    Location
    Chennai
    Posts
    22
    Thanks
    14
    Thanked 31 Times in 13 Posts

    E-waste copper recovery and getting rid of nickel and tin (soldering)

    After reading some threads about e-waste in this forum my interest carried away to e-waste recycling from Aluminium recycling start-up.


    Had a discussion with a friend in a tea shop.


    We both decided to do more readings.


    Before that we decided on input. After some analysis we decided on PCB.


    Why PCB?


    Because PCB is available on everything. From hand mobile to laptop/ PC, etc PCB is everywhere.


    Having this in mind went around the government office that enforce pollution standers.


    Had a discussion with the officials and getting the certification for e-waste recycling has changed a lot in my country (India) and state (Tamil Nadu) from 2016


    Seems like the government is more concerned about the unauthorised e-waste recycling groups. Having this in mind they put more rules on 2017-18.




    Seems to be easy to get the government certificate.


    Based on all the information we collected we decided to plan further at a very small scale which is 1000 kg PCB processing per day.


    We planned the following steps


    Step-1:


    PCB will be anything from type-1 and type-2. Let the type have as much copper but that should not stop us from going to other less copper rich PCB. Yes, remove the battery and other hazardous things manually from the systems and use a PCB Depopulation system to remove the connect parts from PCB and make it a plain PCB


    Step-2:


    reduce the pcb by shredding then grinding it then air separate it so that epoxy and metal gets separated.


    Step-3:
    Repeat the above process for pcb connected parts such as ic, capacitors etc. Yes manual identification is needed.


    Step-4:
    Having the meal powder that has copper mixed with other metals such as AL, gold , silver etc lets melt it as a anode sheet for electrolysis.


    Step-5:


    Pure copper of 99.99% from electrolysis has a good value and sell off the precious metal slug which is anode slime that gets collected at the bottom of the electrolysis tub. Or implement aqua regia to get gold which ever is eco friendly. Yes I dont want any Ph reduction process. So mostly we will be selling off those anode slime.


    Got quotation for the PCB grinding machine, aqua regia lab ste-up, effluent treatment etc. except electrolysis system.


    During the process of getting sale invoice for electrolysis system One friend asked a good question. What will happens to the nickel and tin (soldering) that comes along the PCB till the melting stage? During electrolysis to purify the copper the nickel and tin gets along the cathode from anode and that will make the copper impure.


    I am finding answer for this question. How to get rid of the nickel and tin that gets along the anode?
    Last edited by sathyashrayan; 12-24-2018 at 06:32 AM. Reason: Spelling mistake

  2. The Following User Says Thank You to sathyashrayan for This Post:



  3. #2
    mikeinreco's Avatar
    SMF Badges of Honor


    Member since
    Dec 2011
    Location
    TENNESSEE
    Posts
    4,016
    Thanks
    1,087
    Thanked 4,212 Times in 1,901 Posts
    You may check the goldrefiningforum.com
    BUYING ALL COMPUTER SCRAP WORKING OR NOT
    CHECK OUT MY BUYERS THREAD http://www.scrapmetalforum.com/scrap...nic-scrap.html

  4. The Following 3 Users say Thank You for This Post by mikeinreco:


  5. #3
    sathyashrayan started this thread.
    sathyashrayan's Avatar
    SMF Badges of Honor

    Member since
    Jul 2018
    Location
    Chennai
    Posts
    22
    Thanks
    14
    Thanked 31 Times in 13 Posts
    Quote Originally Posted by mikeinreco View Post
    You may check the goldrefiningforum.com
    Thanks for the reply. But I am surprised to see some other paid forum is been recommended when I am already a paid one here. Let me wait for someone to asses the other forum's worthiness.

  6. #4
    jimicrk's Avatar
    SMF Badges of Honor


    Member since
    Sep 2013
    Location
    Tennessee
    Posts
    2,264
    Thanks
    2,566
    Thanked 3,980 Times in 1,505 Posts
    You were referred to the gold refining forum because it against forum rules to discuss refining on this forum

  7. The Following User Says Thank You to jimicrk for This Post:


  8. #5
    sathyashrayan started this thread.
    sathyashrayan's Avatar
    SMF Badges of Honor

    Member since
    Jul 2018
    Location
    Chennai
    Posts
    22
    Thanks
    14
    Thanked 31 Times in 13 Posts
    Quote Originally Posted by jimicrk View Post
    You were referred to the gold refining forum because it against forum rules to discuss refining on this forum
    Understood..


  9. Similar threads on the Scrap Metal Forum

    1. Nickel Hi Temp Alloy Recycling - Nickel, Tungsten Metal Powder & Sludge Recycling
      By americanscrapmetal.com in forum Introduce yourself
      Replies: 9
      Last Post: 12-13-2018, 03:37 AM
    2. Weller soldering guns: vintage better than new
      By KillYrTV in forum Tools and Equipment
      Replies: 8
      Last Post: 01-03-2016, 10:43 PM
    3. Soldering Iron
      By Lurch in forum Off Topic Discussions
      Replies: 13
      Last Post: 02-20-2014, 08:05 PM
    4. e-waste gold recovery classes?!
      By SuperDave in forum General Electronics Recycling
      Replies: 16
      Last Post: 09-15-2013, 12:05 PM
    5. VIGOR electric soldering machine
      By newattitude in forum More than Scrap Value
      Replies: 5
      Last Post: 05-03-2012, 03:23 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

 
Browse the Most Recent Threads
On SMF In THIS CATEGORY.





OR

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

The Scrap Metal Forum

    The Scrap Metal Forum is the #1 scrap metal recycling community in the world. Here we talk about the scrap metal business, making money, where we connect with other scrappers, scrap yards and more.

SMF on Facebook and Twitter

Twitter Facebook