Indirect reduction

Japanese: 間接還元 - かんせつかんげん
Indirect reduction

…For this reason, smelting and reduction are sometimes used almost synonymously, but it is better to distinguish between them. The most commonly used reduction smelting method is the reduction method using carbon (coke) as the reducing agent. When carbon and oxide react directly, it is called direct reduction, and when carbon monoxide (CO) is the reducing agent, it is called indirect reduction. Carbon dioxide (CO 2) produced in indirect reduction reacts with carbon to return to carbon monoxide, restoring the reducing power. …

*Some of the terminology used to refer to "indirect reduction" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このため製錬と還元とがほぼ同義の言葉として用いられることもあるが,これは区別しておくほうがよい。還元製錬で最も多く用いられるのは,炭素(コークス)を還元剤とする還元法で,炭素と酸化物が直接反応する場合を直接還元,一酸化炭素COが還元剤となる場合を間接還元という。間接還元で生じた二酸化炭素CO2は,炭素と反応して再び一酸化炭素に戻り還元力が回復する。…

※「間接還元」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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