Indirect smelting - Indirect smelting

Japanese: 間接製錬 - かんせつせいれん
Indirect smelting - Indirect smelting

...This distribution varies greatly depending on the strength of the redox, the composition of the mixed melt, the temperature, etc.
[Smelting method]
(1) Direct and indirect smelting When extracting metals from concentrates, indirect smelting is a method in which the form of the metal compounds in the raw materials is changed by roasting, or an intermediate product such as matte is produced, and the metal content is concentrated. In contrast, the method of obtaining metals from concentrates in a single process is called direct smelting.

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この分配は酸化還元の強さ,混合融体の成分,温度などによって大きく変化する。
[製錬方式]
 (1)直接製錬と間接製錬 精鉱から金属を取り出す際に,焙焼(ばいしよう)によって原料中の金属の化合物の形を変えたり,マットのような中間産物にして,いったん金属分を濃縮するような方式を間接製錬という。これに対し精鉱から1段階のプロセスで金属を得る方法を直接製錬と呼んでいる。…

※「間接製錬」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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