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  2. Copper extraction - Wikipedia

    en.wikipedia.org/wiki/Copper_extraction

    In the US, more copper is recovered and put back into service from recycled material than is derived from newly mined ore. Copper's recycle value is so great that premium-grade scrap normally has at least 95% of the value of primary metal from newly mined ore. [80] In Europe, about 50% of copper demand comes from recycling (as of 2016). [81]

  3. List of copper ores - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_ores

    Following is a list of minerals that serve as copper ores in the copper mining process: [1] Image Name Formula % Copper when pure Chalcopyrite: CuFeS 2: 34.5 Chalcocite:

  4. Copper - Wikipedia

    en.wikipedia.org/wiki/Copper

    High-purity scrap copper is melted in a furnace and then reduced and cast into billets and ingots. [49] Lower-purity scrap is melted to form black copper (70–90% pure, containing impurities such as iron, zinc, tin, and nickel), followed by oxidation of impurities in a converter to form blister copper (96–98% pure), which is then refined as ...

  5. Recycling by material - Wikipedia

    en.wikipedia.org/wiki/Recycling_by_material

    Recycling is via a steelworks: scrap is either remelted in an electric arc furnace (90-100% scrap), or used as part of the charge in a Basic Oxygen Furnace (around 25% scrap). [20] Any grade of steel can be recycled to top quality new metal, with no 'downgrading' from prime to lower quality materials as steel is recycled repeatedly. 42% of ...

  6. Scrap - Wikipedia

    en.wikipedia.org/wiki/Scrap

    Scrap metal rusts in the snow (Finland) The metal recycling industry encompasses a wide range of metals. The more frequently recycled metals are scrap steel, iron (ISS), lead, aluminum, copper, stainless steel, and zinc. Steel [10] is the most recycled due to its sustainable properties. There are two main categories of metals: ferrous and non ...

  7. List of copper alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_alloys

    Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion . Of the large number of different types, the best known traditional types are bronze , where tin is a significant addition, and brass , using zinc instead.

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