Iron and steel manufacturing

Japanese: 製鉄･製鋼 - せいてつせいこう

The process of making steel from iron ore is called ironmaking or pig iron production, while the process of making steel from pig iron is called steelmaking. For an example of the process of an integrated steelworks, which includes pig iron production, steelmaking, and further steel material and product manufacturing, see the diagram in the "Steelworks" entry.
[Principle of the smelting process]
Steel is used in a wide range of fields, including construction, ships, vehicles, industrial machinery, electrical equipment, office equipment, and household goods, and is a major pillar of modern society. The consumption of steel is incomparably greater than that of any other metal (total world crude steel production in 1994 was 723 million tons).

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鉄鉱石から鋼をつくる工程をいい，前段の銑鉄をつくる工程を製鉄または製銑といい，後段の銑鉄から鋼をつくる工程を製鋼という。製銑，製鋼，さらに鋼材，製品製造までを行う銑鋼一貫製鉄所の工程例は〈製鉄所〉の項の図を参照。
【製錬工程の原理】
　鉄は建設，船舶，車両，産業機械，電気機器，事務機器，あるいは家庭用品などあらゆる分野に使用され，現代社会を支える大きな柱となっている。鉄の消費量はほかのどんな金属と比べても，比較にならないほど多い(世界の粗鋼総生産高は1994年で7億2300万t)。

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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