柯林斯詞典blast furnace (blast furnaces) 1. N-COUNT A blast furnace is a large structure in which iron ore is heated under pressure so that it melts and the pure iron metal separates out and can be collected. (鍊鉄的)鼓風(fēng)爐; 高爐 返回 blast furnace劍橋詞典a container in which iron is produced by blowing extremely hot air through a mixture of iron ore , coke , and limestone （鍊鉄的）高爐，鼓風(fēng)爐 返回 blast furnace