论文部分内容阅读
氧气转炉出钢时,溶渣流入钢包引起回磷,降低合金收得率,浸蚀钢包内衬,并且降低钢包精炼的效果。为了解决此问题,日本川崎钢铁公司水岛钢厂试成并推广了两种挡渣方法。即挡渣球法和挡渣罐法。该厂所用挡渣球系一铸铁球内包一块低级砖,最适当的比重是4.8。转炉出钢时由一滑槽将球抛入熔池,使其悬浮在渣—钢界面上并位于出钢孔的上方。由于球外有渣层包住,故铸铁在熔池中不被熔化。钢液出完后,挡渣球堵塞出钢孔,限制熔渣流入钢包。采用
When the oxygen converter is tapped, the slag flows into the ladle to cause phosphorus recovery, which reduces the alloy yield, erodes the ladle lining and reduces the effect of the ladle refining. In order to solve this problem, Mizushima Steel of Japan’s Kawasaki Steel Co., Ltd. piloted and promoted two kinds of slag-blocking methods. Stopper ball method and slag tank method. The factory used slag ball system a cast iron ball inside a low-grade brick, the most appropriate proportion is 4.8. When the converter is tapping, the ball is thrown into the pool by a chute, suspended in the slag-steel interface and located above the tapping hole. Due to the slag layer outside the ball, so cast iron in the pool is not melting. After the molten steel is discharged, the slag-blocking ball blocks the steel-out hole to restrict the molten slag from flowing into the ladle. use