🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsSvenskaРусскийالعربيةفارسی中文EntityQ5910687· pop 7· linked from 183 articlesHot blastpreheating of air blown into a blast furnaceAvailable in 7 languagesEspañolРусскийPortuguêsSvenskaUkrainianفارسیvia Wikidata sitelinks · CC0Connectionsregenerative heat exchangerEntityWalesEntityCategoriesBlast furnacesBritish inventionsMetallurgyScottish inventionsSteelmaking