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  2. Leaching (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Leaching_(chemistry)

    Leaching is the process of a solute becoming detached or extracted from its carrier substance by way of a solvent. [ 1 ] Leaching is a naturally occurring process which scientists have adapted for a variety of applications with a variety of methods.

  3. Leaching (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Leaching_(metallurgy)

    Leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals within the ore, into soluble salts while the impurity remains insoluble. These can then be washed out and processed to give the pure metal; the materials left over are commonly known as tailings .

  4. Heap leaching - Wikipedia

    en.wikipedia.org/wiki/Heap_leaching

    Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials.

  5. Leaching - Wikipedia

    en.wikipedia.org/wiki/Leaching

    Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent), and may refer to: Leaching (agriculture) , the loss of water-soluble plant nutrients from the soil; or applying a small amount of excess irrigation to avoid soil salinity

  6. Hydrometallurgy - Wikipedia

    en.wikipedia.org/wiki/Hydrometallurgy

    In-situ leaching is also called "solution mining". This process initially involves drilling of holes into the ore deposit. Explosives or hydraulic fracturing are used to create open pathways within the deposit for solution to penetrate into. Leaching solution is pumped into the deposit where it makes contact with the ore.

  7. How The World Bank Is Financing Environmental Destruction

    projects.huffingtonpost.com/projects/worldbank...

    Yanacocha, like most modern gold mines, uses a process called cyanide-heap leaching to extract tiny bits of ore from rock. Mining engineers begin by blasting apart hills and other formations, creating deep pits. Each truckload that leaves the pit contains roughly 180 tons of rock and dirt — and about 8.5 ounces of gold.

  8. In situ leach - Wikipedia

    en.wikipedia.org/wiki/In_situ_leach

    In-situ leaching (ISL), also called in-situ recovery (ISR) or solution mining, is a mining process used to recover minerals such as copper and uranium through boreholes drilled into a deposit, in situ. In-situ leach works by artificially dissolving minerals occurring naturally in the solid state.

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