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发明公开
CN103372637A 结晶器保护渣 有权

结晶器保护渣
摘要：
本发明涉及连铸浇钢技术，尤其涉及一种低钠镀锡板结晶器保护渣。一种结晶器保护渣，其化学成分重量百分比为：SiO236.5-42.5%，Al2O32.7-5.7%，CaO36.5-40.5%，MgO1.5-2.2%，Na2O1.3-1.9%，F.C1.5-2.5%，Li2O1.8-2.5%，T.C2.6-4.2%，F6.0-9.0%，CaO/SiO20.86-1.11。所述保护渣熔点1040±20℃，粘度0.4±0.10Pa.S，H2O小于等于0.5%。所述保护渣能适应镀锡板拉速1.4-1.5m/min的生产。本发明的保护渣能减少由于保护渣成分中Na2O超标造成的批量缺陷质量事故，并能提高镀锡板系列钢种的拉速。
摘要（英）：

The invention relates to the continuous steel casting technology, particularly to a low-sodium tinplate crystallizer casting power. The crystallizer casting power comprises, by weight, 36.5-42.5% of SiO2, 2.7-5.7% of Al2O3, 36.5-40.5% of CaO, 1.5-2.2% of MgO, 1.3-1.9% of Na2O, 1.5-2.5% of F.C, 1.8-2.5% of Li2O, 2.6-4.2% of T.C, 6.0-9.0% of F and 0.86-1.11% of Cao/SiO2. The melting point of the casting powder is 1040+/-20DEG C, the viscosity of the casting powder is 0.4+/-0.10Pa.S, and H2O is smaller than or equal to 0.5%. The casting powder is adapted to production of tinplates at the casting speed of 1.4-1.5m/min. According to the casting powder, batch defect quality accidents due to the fact that Na2O in the casting powder exceeds the standard can be reduced, and the casting speeds of tinplate series steel grades can be increased.

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