Volatile smelting - Kihashi smelting

Japanese: 揮発製錬 - きはしせいれん
Volatile smelting - Kihashi smelting

…(4) Oxidation smelting Oxidation smelting is used to remove impurities from raw minerals, for example, when the iron and sulfur in chalcopyrite CuFeS2 are oxidized and removed, leaving copper in metallic form, or when a metal is produced by reduction and then the coexisting impurities are selectively oxidized and removed (secondary smelting). (5) Volatilization smelting A method in which metals are first separated into the gas phase in the form of vapor and then condensed. Used for mercury, zinc (pryo-smelting), and magnesium (Pidgeon process - reduction and volatilization by ferrosilicon), etc. …

*Some of the terminology that refers to "volatile smelting" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(4)酸化製錬 原料鉱物中の不純物を酸化除去する場合,たとえば黄銅鉱CuFeS2中の鉄と硫黄を酸化して除くと銅が金属の形で残るという場合と,いったん還元によって金属を製造したあとで,共存混入している不純物を選択的に酸化除去する場合(二次製錬)を酸化製錬という。(5)揮発製錬 金属を蒸気の形でいったん気相に分離したのち凝縮させる方法。水銀,亜鉛(乾式製錬),マグネシウム(ピジョン法――フェロシリコンによる還元揮発)などに用いられる。…

※「揮発製錬」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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