铁渣

例句：

1. 1. The furnace was filled with iron slag.
   炉子里满是铁渣。
2. 2. The workers were removing the iron slag from the furnace.
   工人们正在从炉子中清除铁渣。
3. 3. Iron slag is a byproduct of the steelmaking process.
   铁渣是钢铁生产过程中的一个副产品。