Many readers will know that gold (chemical symbol Au) used in the jewelry industry. But not all suspect that it is used in the electronics industry (including computer components) due to excellent thermal and electrical conductivity, resistance to oxidation (i.e. to corrosion) and stability. The computer industry potreblinet several hundred tons of metal per year (318 tons in 2003, for example).
The precious metal can be found in almost all computer components - processors, motherboards, expansion cards, DIMM and so on. Of course, in each kit uses a tiny fraction of gold. But the price of gold in recent years soared, so becoming more cost-effective to get the gold out of old parts, rather than to produce it in the traditional way. It therefore appeared on the market a specialized company engaged in just that.
Today we show you how to get the gold out of old motherboards with their own hands. Please note: the chemicals that were used in the demonstration, very dangerous, especially in the commitments we concentrations. Therefore, we do not recommend repeating this experiment at home.
Gold is present in many elements of the motherboard: connectors IDE, slots, PCI Express, PCI, AGP, ISA, and other ports, bridges, in the processor socket and slots DIMM (SIMM on older motherboards).
These connectors are often coated with a thin layer of gold in a thickness of several microns.
The first phase of our experiment is to remove all these contacts and connectors. We will need wire cutters, pliers and cutters, flat and Phillips screwdrivers, as well as a certain amount of time.
For the experiments need a large number of contacts - they just gave our "donor" motherboards.
We also need chemicals and tools.