How to remove gold from circuit board Gold Recycling(1)

 How to remove gold from circuit board Gold Recycling(1)

 
If you’ve opened an electronic device before, such as radios, televisions, or even your old cellphone, you’ve seen their inner workings. Ever noticed those shiny gold-colored parts on the circuit boards? Those bright pieces of metal are, in fact, gold. Gold is used on electronic circuit boards because of its excellent conductive properties and because it doesn’t corrode or rust over time. So how to recycling the gold from the circuit boards is a problem to be solve.Here is the method.
 
The first,Removing Gold Using Nitric Acid
1,For the safe of you,you need the protective gear,such as face mask,safety glasses,and industrial gloves.Because the Chemicals and acids can irritate or even burn through your skin. Fumes from burning acids can also hurt your eyes and cause nausea when inhaled.
2,Purchase the concentrated nitric acid.The are the necessary material.
3,Put your circuit boards in a glass container. The container should preferably be Pyrex glassware or the kind that can withstand extreme heat.
Break the circuit boards into smaller pieces before you put them in the glass container.Do not use plastic containers as the acid might burn right through it.
4,Pour the concentrated nitric acid into the glass container with the circuit boards. As you put the acid in, burning fumes will start to come out of the container, so make sure you’re wearing protective gear.
5,Stir the mixture using a glass rod until the contents become fluid in form. Since gold requires stronger chemicals to be dissolved, the nitric acid will melt all the plastic and metal parts of the circuit board without harming the gold bits.
6Drain the nitric acid from the mixture. Use a filter to separate the solid parts from the liquid.
7Pick out the unmelted parts. These parts will have the gold. Some plastic may still be attached to the gold, so you need to separate these little bits off the gold yourself. Be sure to use industrial strength gloves when you do so.
 
The follow steps will be introduction in the other article.

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