名词
中文翻译：Unknown
同义词：
['smelting', 'blast furnace operation', 'converting ore into metal']
例句：
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1. The company specializes in slag-making and steel production.
该公司专门从事炼渣制造和钢铁生产。
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2. The blast furnace is the heart of the smelting process.
高炉是冶炼过程的核心。
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3. The converter is used to make pig iron from scrap iron.
转炉用于将废钢转化为生铁。