精錬








精錬（せいれん、英語：refining）とは、不純物の多い金属から純度の高い金属を取り出す過程のことである。これに対して、鉱石から金属を取り出す工程を製錬といい、精錬とは別の概念としている。



概要


英語のrefining は、金属だけでなく化学物質中の不純物を取り除く工程一般を広く指し、日本語の精製に相当する。


金属が取り出された残りの不純物が多い部分は残渣（ざんさ）と呼ばれる。残渣からレアメタルを精練する場合もある。


銅の精錬は電気分解法を用いて行われる。これを電解精錬または電解精銅という。



関連項目






ウィクショナリーに精錬の項目があります。


  • 上水道

  • 冶金

  • 湿式精錬

  • 乾式精錬

  • 電解精錬












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