LD method - Eldee method

Japanese: LD 法 - えるでぃーほう

…However, it was successful in steelmaking, and in 1952 the oxygen converter process was industrialized in Austria. It was invented at both the Linz and Donavitz steelworks, so it is called the LD process, an acronym. It overcame the thermal deficiencies and the qualitative drawbacks of the nitrogen content of the conventional air converter process, and it was proven possible to produce steel of a quality comparable to that of open hearth steel. Since then, it has rapidly replaced the open hearth process and spread worldwide. …

From [Converter]

…The size of a converter is expressed by the amount of steel it can refine at one time, and is called a “ton converter.” The converter steelmaking process originated from a patent obtained by H. Bessemer of England in 1856, and there are other processes such as the Thomas process, the LD process, the OBM process, and the combined blowing process, each of which has played its own role over the years. The Bessemer process is also called the acid bottom blowing converter process. …

*Some of the terminology that refers to the "LD method" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし製鋼法で成功し，1952年オーストリアで純酸素上吹転炉法が工業化された。リンツとドナビツの両製鉄所で発明が実施されたので頭文字をとってLD法と呼ばれている。従来の空気転炉法の熱的不足と窒素含有の質的欠点とが克服され，平炉鋼に匹敵する質の鋼を製造できることが証明され，以来急速に平炉に代わって世界に普及した。…