Mining gold on unused Mobile phones

Mobile phones that are not used are precious metals, such as gold or silver. Mobile phones are high-tech products as well as the PCB board where the wires contain metals such as gold, silver, platinum and iridium. Although of course the numbers are very small. But we have a saying, "little by little into a hill". Several hundred grams of gold, silver and other metals can be obtained from 1 ton of unused mobile phones. It makes it like a gold mine, with gold and silver content of greater than usual mine.

Lately, half of the population has a mobile phone, and constantly new models appear on the market. Last year ago, more than 48 million mobile phones generated. In anticipation of this 6 large communications companies have implemented systems to get a collection of mobile phones are unused. Last year only one of these companies can collect 10 million of mobile phones is not in use, which of course is a gold mine.  

For washing gold from Japan of mobile phones using purification technology that has been developed ore in a mine Japan. As we know, mine ore at a place usually not pure and contains various types of metals. Because Japan has many volcanoes, magma heat is often used to melt the metal, which is then mixed and form ore deposits. Therefore, this technology was developed a long time to purify dirty ore into metal.Copper mining town Profinsi Kosaka in Akita, about 600 kilometers the north of Tokyo, is one of the few cities that developed it.
Many mobile phones are collected and processed there. In the past, Kosaka famous as a prominent producer of copper, but after the second World War, the mine was closed due to not compete with the price of copper imports.
The Mobile phone as well as the material in which the metals are there still intermingled. Smelting technology developed can now be used to obtain valuable metals from the former mobile phone.A large number of mobile phones collected are first killed and then inserted into the crucible along with copper ore. Objects such as plastic, lead and tin are separated and removed from the mixture to produce a material that is known for its raw copper, which is a mixture of copper, gold, platinum and other metals. Raw copper was then put in a solution of sulfuric acid. When the cathode is supplied electricity is fed into the solution, pure copper gather at the cathode. Other precious metals to harden and then separate.

Separate metal hardens and is then put into a solution of nitric acid and the process was repeated. This time gathered in pure silver cathode. The remaining material then enter into a solution of hydrochloric acid in which electricity is passed back to get pure gold. Kosaka smelter to process 50 tonnes of mobile phones each year, and then gained 15 pounds of gold. Because plant in Kosaka take lead, cadmium and other harmful substances before they start the process earlier. These materials are also purified for industrial use.The explosion of mobile phone use has resulted in an incredible byproducts. If the mobile phones discarded it immediately destroyed and buried in the ground, the heavy metals that are harmful can be separated and harmful effects to the environment. But by processing mobile phone that is not used this without causing garbage, can be obtained gold and silver. I think this technology as the saying goes, "once paddled, 2-3 islands exceeded"

Source: 
http://www.kamusilmiah.com/elektronik/menambang-emas-dari-telpon-genggam/