刚玉-尖晶石-炭不烧上水口的研制和使用

Development and application of corundum-spinel-carbon unfired upper nozzle

以电熔刚玉砂、高纯电熔尖晶石为主要原料 ,以热固性树脂为结合剂 ,添加复合抗氧化剂而制成的刚玉 -尖晶石 -炭不烧上水口 ,具有热态强度好、耐渣蚀性强、工艺简单等优点。该水口在某钢厂 90t连铸钢包上批量使用 ,较刚玉上水口寿命提高 50 %～ 6 0 %。

The nozzle was developed using fused corundum and high purity fused spinel as main starting materials, thermosetting resin as binder and adding complexing anti oxidant. It has high hot strength and good resistance to slag corrosion. Its production technology is simple.Using in a 90?t continuous casting ladle, its service life increases by 50%～60% compared with that of corundum upper nozzle.