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发明公开
CN102851453A 一种异型坯钢水冶炼用复合精炼渣及其制备方法与应用 有权

一种异型坯钢水冶炼用复合精炼渣及其制备方法与应用
摘要：
本发明涉及一种异型坯钢水冶炼用复合精炼渣及其制备方法与应用。所述复合精炼渣重量百分比组分为：CaO 52～60%，MgO 7～9%，Al2O3 25～32%，SiO2≤5%，灰分+水分≤4%，P+S≤1%。本发明还提供该复合精炼渣的制备方法。本发明精炼渣熔点低，成渣速度快，泡沫化程度高，且能够满足异型坯钢水浇注；本发明应用于异型坯钢水精炼过程，化渣时间只需5min，降低通电噪音至50分贝以下，提高电效率20%以上。
摘要（英）：

The invention relates to a composite refining slag for special-shaped blank molten steel smelting, and a preparation method and application thereof. The composite refining slag comprises the following components in percentage by weight: 52-60% of CaO, 7-9% of MgO, 25-32% of Al2O3, at most 5% of SiO2, at most 4% of ash+water, and at most 1% of P+S. The invention also provides a preparation method of the composite refining slag. The refining slag has the advantages of low melting point, high slag formation speed and high foaming degree, and can satisfy special-shaped blank molten steel casting. The invention is used in the special-shaped blank molten steel refining process, the slag formation time only needs 5 minutes, the electrifying noise is lowered to less than 50db, and the electrical efficiency is enhanced by more than 20%.

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