From one kilogramme of CPU (386 and 486), we get 6 to 6.5 grammes of gold. Everyone desires a CPU, including you and me. CPUs have gold wires inside them. It is very easy to recover gold from the CPU. You can make it your part-time or full-time business, too. When we consider gathering CPUs in large quantities, it may seem daunting, but it's actually not that difficult. In India, the e-scrap business is a very organised trade. We have a great number of scrap dealers in every city, and these scrap dealers have contacts in big companies from where they lift large quantities of e-scrap, and each scrap dealer is associated with numerous mobile scrap collectors who go door to door or shop to shop to collect e-waste. And, this way, these wholesale scrap dealers have great quantities of e-scrap. And you may purchase just about any kind of e-waste item from them.
If you want to recycle gold from CPUs and make it your part-time or full-time business, I can assure you that it is profitable. You need a 50-square-foot area of land or at least a 20-foot x 20-foot properly ventilated room.
The basic requirements of equipment for this business are some plastic tubs, one water storage tank, one small furnace, one blower, one exhaust fan, one large heat-resistant glass bottle, two pairs of medium- and full-size gloves, one hammer, a pair of tongs, two or three different types of pliers, cutters, files, a gas stove, etc.
As for chemicals, you can use either aqua regia or the cupellation process. The Aqua Regia method is more preferable. Old CPUs have a golden cap on them, but the latest CPUs don’t have a golden cap. You must cut or break them into small pieces so that the chemicals can reach inside and react with gold. To prepare aqua regia, you have to take one part of nitric acid (HNO3) and three parts of hydrochloric acid (HCL). Prepare the solution according to the requirements. Don’t make too much of it. Place the CPUs in the plastic tub and start putting aqua regia on them gradually.
Aqua regia will start the reaction with the metals in the CPUs and produce toxic fumes. So, don't stand too close to the tub. When the reaction slows down, see if the metals have dissolved fully into the solution. If the metal is left, add more aqua regia to the solution and keep pouring the acids slowly till the metals are completely digested. This reaction turns gold into gold chloride. Now we need to separate the remains of the CPUs from the solution and wash them with plain water two to three times to remove gold chloride from them. Mix this water with the solution, and filter this solution through a filter paper.
To achieve 100% gold recovery, it is crucial to carefully and patiently remove the gold from the solution. For this, you may contact us either by phone or through the mail.
No comments:
Post a Comment