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发明公开
CN107498013A 一种含TiO2高铝钢保护渣及其应用 有权

一种含TiO2高铝钢保护渣及其应用
摘要：
本发明公开了含TiO2高铝钢保护渣，其按质量百分比计，由以下氧化物组成：CaO 30％～45％，Al2O316％～24.5％，SiO28％～16％，Na2O8％～15％，Li2O 1％～5％，MgO 2％～6％，BaO 3％～7％，F-6％～10％，TiO22.7％～7％，(CaO+BaO)/Al2O3为1.0～2.1。该保护渣熔点和粘度较低，结晶性能良好。该保护渣特别适用于Al质量百分含量在1.5～2.5％的高铝钢的连铸。该保护渣使用时，能有效地减弱连铸过程中渣钢反应的程度，使连铸过程中保护渣的结晶性能和润滑性能变得更加稳定，大大减少了铸坯表面出现的凹陷、裂纹、夹杂等质量缺陷的概率。
摘要（英）：

The invention discloses TiO2 containing high-aluminum steel protection slag. The TiO2 containing high-aluminum steel protection slag comprises following oxides including, by mass percent, 30%-45% of CaO, 16%-24.5% of Al2O3, 8%-16% of SiO2, 8%-15% of Na2O, 1%-5% of Li2O, 2%-6% of MgO, 3%-7% of BaO, 6%-10% of F<-> and 2.7%-7% of TiO2, and (CaO+BaO)/Al2O3 ranges from 1.0 to 2.1. The protection slag is low in melting point and viscosity, and the crystallization property is good. The protection slag is particularly suitable for continuous casting of high-aluminum steel with the Al mass percent content ranging from 1.5% to 2.5%. When the protection slag is used, the slag steel reaction degree in the continuous casting process can be effectively weakened, and the crystallization property and the lubricating property of the protection slag in the continuous casting process become more stable; and the probability that concaves, cracks, inclusions and other quality defects happen to the surfaces of casting blanks is greatly reduced.

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