The preparation method utilizes industrial sulfuric acid to leach waste iron residue in oxygen and at normal pressure under reasonable production process and operation conditions.
介绍了以废铁渣为主要原料与工业硫酸反应制备三氧化二铁，产生的废液加氧化钙生成副产物硫酸钙的工艺。
The green high performance concrete demands to utilize more industrial waste residue. The manganese slag, a kind of waste residue produced from iron production, has potential activation after grinded.
绿色高性能混凝土要求更多地利用工业废渣，锰矿渣是冶铁产生的废渣，磨细后具有潜在活性。
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