الاثنين، 4 أبريل 2016

How to extract gold




It symbolizes gold among the items by the periodic table of the elements of the symbol (Au), and is one of the metals, expensive, exists in nature where it is mined and extracted from the ground, and called and is in its natural state any and is in the ground Baltbr, used gold jewelry that adorned by women and men in various parts of the world industry, due to the aesthetics and Aonth, which facilitates the formation process and the design of various shapes using it, as it was used in ancient times as a currency in cash for the states in the centuries-old along with silver, where the coins were Tsk them, but today and after the establishment of the currency paper gold place, to facilitate trade transactions and facilitate the movement and carry out, the Alzha used as a reserve established by the state to give a monetary value of paper currency. All this and more important for this precious element uses. A country that gold resides in its territory, becoming very rich in this case that the rest of the countries left in the same, as has happened with African countries, which assailed the colonial powers and plundered their wealth. Given the scarcity of this important nature element, the scientists and specifically Muslim scholars in the old worked to make the rest of the different metals to gold, but failed to do so, to be the gold needs special conditions difficult availability, including high temperatures, but scientists in the modern era they were able to turn the other elements of gold by neutron collisions, or through the use of nuclear reactors, but these methods are expensive methods of price and costs. Known gold mining gold mining process, and are extracting gold from the ground through the roads were formed primitive and may be new ways of using machines and new equipment, either phases of mining is up by digging holes in the ground to give the whereabouts of crude in the ground, after studying geological wherever they are located, are then extracted from the ground, Afikz strong water until the wash and remove suspended him from clay and impurities. It also is gold recovery by accident when the extraction of silver and copper, as it is the use of chemical methods Kaltdhuab in sulfuric acid. The places that are called them to extract gold mines, and is deployed in the areas which is famous for the presence of gold and employs a large number of people.

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