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Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent). Specifically, it 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 *Leaching (chemistry), the process of extracting minerals from a solid by dissolving them in a liquid *Leaching (metallurgy), a widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media * *Dump leaching, an industrial process to extract metals from ore taken directly from the mine and stacked on the leach pad without crushing * *Heap leaching, an industrial process to extract metals from ore which has been crushed into small chunks * *Tank leaching, a hydro metallurgical method of extracting valuable material from ore * *In-situ leaching, a process of recovering minerals such as copper and uranium through boreholes drilled into the deposit *Leaching (pedology), the loss of mineral and organic solutes due to percolation from soil *Bioleaching, the extraction of specific metals from their ores through the use of bacteria and fungi ==See also== *Leachate, the liquid that drains or 'leaches' from a landfill *Leach (disambiguation) *Leech (disambiguation) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「leaching」の詳細全文を読む スポンサード リンク
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