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Modern Mining Process

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  1. [1]
    الصورة الرمزية احمد عباس الخطيب
    احمد عباس الخطيب
    احمد عباس الخطيب غير متواجد حالياً

    عضو فعال جداً

    تاريخ التسجيل: Jun 2008
    المشاركات: 160
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    Modern Mining Process

    s

    Exploration and Development

    Exploration and
    development require the careful extraction of rock samples to determine ore *******. When a site is identified as containing significant ore *******, it is prepared for mining.


    Moving materials


    Rocks are blasted to break them into smaller pieces and loaded into large trucks for transport to one of two processing locations. Where the ore goes either to concentrating and smelting, or to leaching and electrowinning depends on how much copper and the types of minerals it contains. Development rock is the material that must be excavated to access the ore.

    Milling


    In one copper production process, rock that comes from the mine is crushed into smaller and smaller pieces by heavy steel balls in machinery called mills.


    Concentrating




    Ground up rock is mixed with water, air bubbles and small amounts of chemicals. The chemicals allow copper minerals to rise to the top and stick to floating air bubbles. The remaining mixture of crushed rock and water called tailing separates from the copper bearing bubbles. The copper minerals are skimmed off and dried to form copper concentrate, a powder-like material.
    Smelting




    In the smelter, copper concentrate is melted and copper is separated from other substances in the concentrate. Molten copper is poured into molds called anodes. The unwanted material cools to a glass-like substance called slag. The natural metals that remain in slag are reported under EPCRA.
    Leaching



    In an alternate copper production process, rock is taken from the mine directly to stockpiles. A solution of slightly acidic water is dripped on the stockpiles, percolating down through the rock and dissolving copper along the way. The solution containing the copper is collected and piped to holding ponds.


    Solution Extraction and Electrowinning


    In tanks, the copper-bearing solution is mixed with chemicals that transfer the copper to a more concentrated solution called electrolyte. The electrolyte is pumped to steel tanks. Starter sheets hang in the solution and, using an electric current, the copper is plated from the electrolyte on to the sheet, forming a 99.99 percent pure copper plates. All solutions used during this
    process are recycled.
    منقول للافادة

  2. [2]
    ahmad.rezk
    ahmad.rezk غير متواجد حالياً
    عضو فعال


    تاريخ التسجيل: Jul 2009
    المشاركات: 63
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    i think this process made for gold only
    thax alot

    and it is not a modern process but is the most and cheapest methods

    0 Not allowed!



  3. [3]
    احمد عباس الخطيب
    احمد عباس الخطيب غير متواجد حالياً
    عضو فعال جداً
    الصورة الرمزية احمد عباس الخطيب


    تاريخ التسجيل: Jun 2008
    المشاركات: 160
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    شكرا على ردك وتعليقك
    وشكرا على الملحوظة اللى حضرتك قايلها
    لكن زى ما حضرتك شايف الموضوع منقول.. وعجبنى ..قلت اضيفه للافادة
    وان كان لديك معلومات عن الطرق الحديثة .. فارجو افادتنا بها فى المنتدى
    وجزاكم الله خيرا

    0 Not allowed!


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