compact slag

例句：

1. 1. The steelmaking process involves the use of a compact slag to remove impurities from molten iron.
   炼钢过程涉及使用一种紧凑的熔渣来从液态铁中去除杂质。
2. 2.The compact slag is then poured into the mold and allowed to cool.
   然后，将紧凑的熔渣倒入模具并让其冷却。
3. 3. The compact slag helps to reduce the amount of energy required for the process.
   紧凑的熔渣有助于减少该过程所需的能源量。